diff --git a/docs/api/schemas/generate-schemas.py b/docs/api/schemas/generate-schemas.py
index 14b74147..52008dff 100755
--- a/docs/api/schemas/generate-schemas.py
+++ b/docs/api/schemas/generate-schemas.py
@@ -14,8 +14,8 @@
     yaml = None
 
 ROOT_DIR = os.path.dirname(os.path.realpath(__file__))
-VERSIONS = [(1, 0), (1, 1), (1, 2), (1, 3), None]
-LATEST_VERSION = (1, 3)
+VERSIONS = [(1, 0), (1, 1), (1, 2), (1, 3), (1, 4), None]
+LATEST_VERSION = (1, 4)
 
 
 def generate_schemas():
diff --git a/docs/api/schemas/latest/patchwork.yaml b/docs/api/schemas/latest/patchwork.yaml
index 93e56fa0..dcd85881 100644
--- a/docs/api/schemas/latest/patchwork.yaml
+++ b/docs/api/schemas/latest/patchwork.yaml
@@ -13,7 +13,7 @@ info:
   license:
     name: GPL v2 License
     url: https://www.gnu.org/licenses/gpl-2.0.html
-  version: '1.3'
+  version: '1.4'
 paths:
   /api:
     get:
@@ -1223,6 +1223,56 @@ paths:
                 $ref: '#/components/schemas/Error'
       tags:
         - series
+  /api/series/{id}/link/{related_series_id}:
+    parameters:
+      - in: path
+        name: id
+        description: A unique integer value identifying this series.
+        required: true
+        schema:
+          title: Series ID
+          type: integer
+      - in: path
+        name: related_series_id
+        description: A unique integer value identifying the related series.
+        required: true
+        schema:
+          title: Related series ID
+          type: integer
+    patch:
+      summary: Link both series.
+      description: |
+        Link two series makes so that they bidirectionaly relate to each other.
+
+        Series must belong to the same project to be able to be linked
+      operationId: series_link
+      responses:
+        '200':
+          description: 'Liked series'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Series'
+        '400':
+          description: 'Bad request'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Error'
+        '403':
+          description: 'Forbidden'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Error'
+        '404':
+          description: 'Not found'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Error'
+      tags:
+        - series
   /api/users:
     get:
       summary: List users.
@@ -2605,6 +2655,13 @@ components:
             $ref: '#/components/schemas/PatchEmbedded'
           readOnly: true
           uniqueItems: true
+        related_series:
+          title: Related series
+          type: array
+          items:
+            $ref: '#/components/schemas/Series'
+          readOnly: true
+          uniqueItems: true
     User:
       type: object
       title: User
diff --git a/docs/api/schemas/patchwork.j2 b/docs/api/schemas/patchwork.j2
index 516fbe88..2fb885d2 100644
--- a/docs/api/schemas/patchwork.j2
+++ b/docs/api/schemas/patchwork.j2
@@ -1248,6 +1248,58 @@ paths:
                 $ref: '#/components/schemas/Error'
       tags:
         - series
+{% if version >= (1, 4) %}
+  /api/{{ version_url }}series/{id}/link/{related_series_id}:
+    parameters:
+      - in: path
+        name: id
+        description: A unique integer value identifying this series.
+        required: true
+        schema:
+          title: Series ID
+          type: integer
+      - in: path
+        name: related_series_id
+        description: A unique integer value identifying the related series.
+        required: true
+        schema:
+          title: Related series ID
+          type: integer
+    patch:
+      summary: Link both series.
+      description: |
+        Link two series makes so that they bidirectionaly relate to each other.
+
+        Series must belong to the same project to be able to be linked
+      operationId: series_link
+      responses:
+        '200':
+          description: 'Liked series'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Series'
+        '400':
+          description: 'Bad request'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Error'
+        '403':
+          description: 'Forbidden'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Error'
+        '404':
+          description: 'Not found'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Error'
+      tags:
+        - series
+{% endif %}
   /api/{{ version_url }}users:
     get:
       summary: List users.
@@ -2699,6 +2751,15 @@ components:
             $ref: '#/components/schemas/PatchEmbedded'
           readOnly: true
           uniqueItems: true
+{% if version >= (1, 4) %}
+        related_series:
+          title: Related series
+          type: array
+          items:
+            $ref: '#/components/schemas/Series'
+          readOnly: true
+          uniqueItems: true
+{% endif %}
     User:
       type: object
       title: User
diff --git a/docs/api/schemas/v1.4/patchwork.yaml b/docs/api/schemas/v1.4/patchwork.yaml
new file mode 100644
index 00000000..6cfb3d8f
--- /dev/null
+++ b/docs/api/schemas/v1.4/patchwork.yaml
@@ -0,0 +1,3283 @@
+# DO NOT EDIT THIS FILE. It is generated from a template. Changes should be
+# proposed against the template and updated files generated using the
+# 'generate-schemas.py' tool
+---
+openapi: '3.1.0'
+info:
+  title: Patchwork API
+  description: |
+    Patchwork is a web-based patch tracking system designed to facilitate the
+    contribution and management of contributions to an open-source project.
+  contact:
+    email: patchwork@lists.ozlabs.org
+  license:
+    name: GPL v2 License
+    url: https://www.gnu.org/licenses/gpl-2.0.html
+  version: '1.4'
+paths:
+  /api/1.4/:
+    get:
+      summary: List API resources.
+      description: |
+        Show paths to all supported API resources.
+      operationId: api_list
+      parameters: []
+      responses:
+        '200':
+          description: 'List of API resources'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Index'
+      tags:
+        - api
+  /api/1.4/bundles:
+    get:
+      summary: List bundles.
+      description: |
+        List all bundles that the current user has access to.
+        For unauthenticated requests, only public bundles can be shown.
+      operationId: bundles_list
+      parameters:
+        - $ref: '#/components/parameters/Page'
+        - $ref: '#/components/parameters/PageSize'
+        - $ref: '#/components/parameters/Order'
+        - $ref: '#/components/parameters/Search'
+        - in: query
+          name: project
+          description: An ID or linkname of a project to filter bundles by.
+          schema:
+            title: ''
+            type: string
+        - in: query
+          name: owner
+          description: An ID or username of a user to filter bundles by.
+          schema:
+            title: ''
+            type: string
+        - in: query
+          name: public
+          description: Show only public (`true`) or private (`false`) bundles.
+          schema:
+            title: ''
+            type: string
+            enum:
+              - 'true'
+              - 'false'
+      responses:
+        '200':
+          description: 'List of bundles'
+          headers:
+            Link:
+              $ref: '#/components/headers/Link'
+          content:
+            application/json:
+              schema:
+                type: array
+                items:
+                  $ref: '#/components/schemas/Bundle'
+      tags:
+        - bundles
+    post:
+      summary: Create a bundle.
+      description: |
+        Create a new bundle.
+      operationId: bundles_create
+      security:
+        - basicAuth: []
+        - apiKeyAuth: []
+      requestBody:
+        $ref: '#/components/requestBodies/Bundle'
+      responses:
+        '201':
+          description: 'Created bundle'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Bundle'
+        '400':
+          description: 'Invalid request'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/ErrorBundleCreateUpdate'
+        '403':
+          description: 'Forbidden'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Error'
+      tags:
+        - bundles
+  /api/1.4/bundles/{id}:
+    parameters:
+      - in: path
+        name: id
+        required: true
+        description: A unique integer value identifying this bundle.
+        schema:
+          title: ID
+          type: integer
+    get:
+      summary: Show a bundle.
+      description: |
+        Retrieve a bundle by its ID.
+        The bundle must be either be public or be owned by the currently authenticated user.
+      operationId: bundles_read
+      responses:
+        '200':
+          description: 'A bundle'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Bundle'
+        '404':
+          description: 'Not found'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Error'
+      tags:
+        - bundles
+    patch:
+      summary: Update a bundle (partial).
+      description:
+        Partially update an existing bundle.
+        The bundle must be owned by the currently authenticated user.
+      operationId: bundles_partial_update
+      security:
+        - basicAuth: []
+        - apiKeyAuth: []
+      requestBody:
+        $ref: '#/components/requestBodies/Bundle'
+      responses:
+        '200':
+          description: 'Updated bundle'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Bundle'
+        '400':
+          description: 'Bad request'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/ErrorBundleCreateUpdate'
+        '403':
+          description: 'Forbidden'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Error'
+        '404':
+          description: 'Not found'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Error'
+      tags:
+        - bundles
+    put:
+      summary: Update a bundle.
+      description:
+        Update an existing bundle.
+        The bundle must be owned by the currently authenticated user.
+      operationId: bundles_update
+      security:
+        - basicAuth: []
+        - apiKeyAuth: []
+      requestBody:
+        $ref: '#/components/requestBodies/Bundle'
+      responses:
+        '200':
+          description: 'Updated bundle'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Bundle'
+        '400':
+          description: 'Bad request'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/ErrorBundleCreateUpdate'
+        '403':
+          description: 'Forbidden'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Error'
+        '404':
+          description: 'Not found'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Error'
+      tags:
+        - bundles
+  /api/1.4/covers:
+    get:
+      summary: List cover letters.
+      description: |
+        List all cover letters.
+      operationId: covers_list
+      parameters:
+        - $ref: '#/components/parameters/Page'
+        - $ref: '#/components/parameters/PageSize'
+        - $ref: '#/components/parameters/Order'
+        - $ref: '#/components/parameters/Search'
+        - $ref: '#/components/parameters/BeforeFilter'
+        - $ref: '#/components/parameters/SinceFilter'
+        - in: query
+          name: project
+          description: |
+            An ID or linkname of a project to filter cover letters by.
+          schema:
+            title: ''
+            type: string
+        - in: query
+          name: series
+          description: An ID of a series to filter cover letters by.
+          schema:
+            title: ''
+            type: string
+        - in: query
+          name: submitter
+          description: |
+            An ID or email address of a person to filter cover letters by.
+          schema:
+            title: ''
+            type: string
+        - in: query
+          name: msgid
+          description: |
+            The cover message-id as a case-sensitive string, without leading or
+            trailing angle brackets, to filter by.
+          schema:
+            title: ''
+            type: string
+      responses:
+        '200':
+          description: 'List of cover letters'
+          headers:
+            Link:
+              $ref: '#/components/headers/Link'
+          content:
+            application/json:
+              schema:
+                type: array
+                items:
+                  $ref: '#/components/schemas/CoverList'
+      tags:
+        - covers
+  /api/1.4/covers/{id}:
+    parameters:
+      - in: path
+        name: id
+        description: A unique integer value identifying this cover letter.
+        required: true
+        schema:
+          title: ID
+          type: integer
+    get:
+      summary: Show a cover letter.
+      description: |
+        Retrieve a cover letter by its ID.
+      operationId: covers_read
+      responses:
+        '200':
+          description: 'A cover letter'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/CoverDetail'
+        '404':
+          description: 'Not found'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Error'
+      tags:
+        - covers
+  /api/1.4/covers/{id}/comments:
+    parameters:
+      - in: path
+        name: id
+        description: |
+          A unique integer value identifying the parent cover letter.
+        required: true
+        schema:
+          title: ID
+          type: integer
+    get:
+      summary: List cover letter comments
+      description: |
+        List all comments for the given cover letter.
+      operationId: cover_comments_list
+      parameters:
+        - $ref: '#/components/parameters/Page'
+        - $ref: '#/components/parameters/PageSize'
+        - $ref: '#/components/parameters/Order'
+        - $ref: '#/components/parameters/Search'
+      responses:
+        '200':
+          description: 'List of comments'
+          headers:
+            Link:
+              $ref: '#/components/headers/Link'
+          content:
+            application/json:
+              schema:
+                type: array
+                items:
+                  $ref: '#/components/schemas/Comment'
+        '404':
+          description: 'Not found'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Error'
+      tags:
+        - comments
+  /api/1.4/covers/{cover_id}/comments/{comment_id}:
+    parameters:
+      - in: path
+        name: cover_id
+        description: A unique integer value identifying the parent cover.
+        required: true
+        schema:
+          title: Cover ID
+          type: integer
+      - in: path
+        name: comment_id
+        description: A unique integer value identifying this comment.
+        required: true
+        schema:
+          title: Comment ID
+          type: integer
+    get:
+      summary: Show a cover letter comment.
+      description: |
+        Retrieve a cover letter comment by its ID.
+      operationId: cover_comments_read
+      responses:
+        '200':
+          description: 'A cover letter comment'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Comment'
+        '404':
+          description: 'Not found'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Error'
+      tags:
+        - comments
+    patch:
+      summary: Update a cover letter comment (partial).
+      description:
+        Partially update an existing cover letter comment.
+        You must be a maintainer of the project that the cover letter comment belongs to.
+      operationId: cover_comments_partial_update
+      requestBody:
+        $ref: '#/components/requestBodies/Comment'
+      responses:
+        '200':
+          description: 'Updated cover letter comment'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Comment'
+        '400':
+          description: 'Invalid request'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/ErrorCommentUpdate'
+        '403':
+          description: 'Forbidden'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Error'
+        '404':
+          description: 'Not found'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Error'
+      tags:
+        - comments
+  /api/1.4/events:
+    get:
+      summary: List events.
+      description: |
+        List all events.
+        This list can be quite large. You are encouraged to use filters to narrow it to specific categories or project(s).
+      operationId: events_list
+      parameters:
+        - $ref: '#/components/parameters/Page'
+        - $ref: '#/components/parameters/PageSize'
+        - $ref: '#/components/parameters/Order'
+        - $ref: '#/components/parameters/Search'
+        - $ref: '#/components/parameters/BeforeFilter'
+        - $ref: '#/components/parameters/SinceFilter'
+        - in: query
+          name: project
+          description: An ID or linkname of a project to filter events by.
+          schema:
+            title: ''
+            type: string
+        - in: query
+          name: category
+          description: |
+            An event category to filter events by. These categories are subject
+            to change depending on the version of Patchwork deployed and are
+            not subject to the versionining constraints present across the rest
+            of the API.
+          schema:
+            title: ''
+            type: string
+            enum:
+              - cover-created
+              - patch-created
+              - patch-completed
+              - patch-state-changed
+              - patch-relation-changed
+              - patch-delegated
+              - check-created
+              - series-created
+              - series-completed
+              - cover-comment-created
+              - patch-comment-created
+        - in: query
+          name: series
+          description: An ID of a series to filter events by.
+          schema:
+            title: ''
+            type: integer
+        - in: query
+          name: patch
+          description: An ID of a patch to filter events by.
+          schema:
+            title: ''
+            type: integer
+        - in: query
+          name: cover
+          description: An ID of a cover letter to filter events by.
+          schema:
+            title: ''
+            type: integer
+      responses:
+        '200':
+          description: 'List of events'
+          headers:
+            Link:
+              $ref: '#/components/headers/Link'
+          content:
+            application/json:
+              schema:
+                type: array
+                items:
+                  anyOf:
+                    - $ref: '#/components/schemas/EventCoverCreated'
+                    - $ref: '#/components/schemas/EventPatchCreated'
+                    - $ref: '#/components/schemas/EventPatchCompleted'
+                    - $ref: '#/components/schemas/EventPatchStateChanged'
+                    - $ref: '#/components/schemas/EventPatchRelationChanged'
+                    - $ref: '#/components/schemas/EventPatchDelegated'
+                    - $ref: '#/components/schemas/EventCheckCreated'
+                    - $ref: '#/components/schemas/EventSeriesCreated'
+                    - $ref: '#/components/schemas/EventSeriesCompleted'
+                    - $ref: '#/components/schemas/EventCoverCommentCreated'
+                    - $ref: '#/components/schemas/EventPatchCommentCreated'
+                  discriminator:
+                    propertyName: category
+                    mapping:
+                      cover-created: '#/components/schemas/EventCoverCreated'
+                      patch-created: '#/components/schemas/EventPatchCreated'
+                      patch-completed: '#/components/schemas/EventPatchCompleted'
+                      patch-state-changed: '#/components/schemas/EventPatchStateChanged'
+                      patch-relation-changed: '#/components/schemas/EventPatchRelationChanged'
+                      patch-delegated: '#/components/schemas/EventPatchDelegated'
+                      check-created: '#/components/schemas/EventCheckCreated'
+                      series-created: '#/components/schemas/EventSeriesCreated'
+                      series-completed: '#/components/schemas/EventSeriesCompleted'
+                      cover-comment-created: '#/components/schemas/EventCoverCommentCreated'
+                      patch-comment-created: '#/components/schemas/EventPatchCommentCreated'
+      tags:
+        - events
+  /api/1.4/patches:
+    get:
+      summary: List patches.
+      description: |
+        List all patches.
+      operationId: patches_list
+      parameters:
+        - $ref: '#/components/parameters/Page'
+        - $ref: '#/components/parameters/PageSize'
+        - $ref: '#/components/parameters/Order'
+        - $ref: '#/components/parameters/Search'
+        - $ref: '#/components/parameters/BeforeFilter'
+        - $ref: '#/components/parameters/SinceFilter'
+        - in: query
+          name: project
+          description: An ID or linkname of a project to filter patches by.
+          schema:
+            title: ''
+            type: string
+        - in: query
+          name: series
+          description: An ID of a series to filter patches by.
+          schema:
+            title: ''
+            type: integer
+        - in: query
+          name: submitter
+          description: |
+            An ID or email address of a person to filter patches by.
+          schema:
+            title: ''
+            type: string
+        - in: query
+          name: delegate
+          description: An ID or username of a user to filter patches by.
+          schema:
+            title: ''
+            type: string
+        - in: query
+          name: state
+          description: A slug representation of a state to filter patches by.
+          schema:
+            title: ''
+            type: string
+        - in: query
+          name: archived
+          description: |
+            Show only archived (`true`) or non-archived (`false`) patches.
+          schema:
+            title: ''
+            type: string
+            enum:
+              - 'true'
+              - 'false'
+        - in: query
+          name: hash
+          description: |
+            The patch hash as a case-insensitive hexadecimal string, to filter by.
+          schema:
+            title: ''
+            type: string
+        - in: query
+          name: msgid
+          description: |
+            The patch message-id as a case-sensitive string, without leading or
+            trailing angle brackets, to filter by.
+          schema:
+            title: ''
+            type: string
+      responses:
+        '200':
+          description: 'List of patches'
+          headers:
+            Link:
+              $ref: '#/components/headers/Link'
+          content:
+            application/json:
+              schema:
+                type: array
+                items:
+                  $ref: '#/components/schemas/PatchList'
+      tags:
+        - patches
+  /api/1.4/patches/{id}:
+    parameters:
+      - in: path
+        name: id
+        description: A unique integer value identifying this patch.
+        required: true
+        schema:
+          title: ID
+          type: integer
+    get:
+      summary: Show a patch.
+      description: |
+        Retrieve a patch by its ID.
+      operationId: patches_read
+      responses:
+        '200':
+          description: 'A patch'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/PatchDetail'
+        '404':
+          description: 'Not found'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Error'
+      tags:
+        - patches
+    patch:
+      summary: Update a patch (partial).
+      description:
+        Partially update an existing patch.
+        You must be a maintainer of the project that the patch belongs to.
+      operationId: patches_partial_update
+      security:
+        - basicAuth: []
+        - apiKeyAuth: []
+      requestBody:
+        $ref: '#/components/requestBodies/Patch'
+      responses:
+        '200':
+          description: 'An updated patch'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/PatchDetail'
+        '400':
+          description: 'Invalid request'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/ErrorPatchUpdate'
+        '403':
+          description: 'Forbidden'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Error'
+        '404':
+          description: 'Not found'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Error'
+        '409':
+          description: 'Conflict'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Error'
+      tags:
+        - patches
+    put:
+      description: Update a patch.
+      operationId: patches_update
+      security:
+        - basicAuth: []
+        - apiKeyAuth: []
+      requestBody:
+        $ref: '#/components/requestBodies/Patch'
+      responses:
+        '200':
+          description: 'An updated patch'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/PatchDetail'
+        '400':
+          description: 'Invalid request'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/ErrorPatchUpdate'
+        '403':
+          description: 'Forbidden'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Error'
+        '404':
+          description: 'Not found'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Error'
+        '409':
+          description: 'Conflict'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Error'
+      tags:
+        - patches
+  /api/1.4/patches/{id}/comments:
+    parameters:
+      - in: path
+        name: id
+        description: A unique integer value identifying the parent patch.
+        required: true
+        schema:
+          title: ID
+          type: integer
+    get:
+      summary: List patch comments
+      description: |
+        List all comments for the given patch.
+      operationId: patch_comments_list
+      parameters:
+        - $ref: '#/components/parameters/Page'
+        - $ref: '#/components/parameters/PageSize'
+        - $ref: '#/components/parameters/Order'
+        - $ref: '#/components/parameters/Search'
+      responses:
+        '200':
+          description: 'List of comments'
+          headers:
+            Link:
+              $ref: '#/components/headers/Link'
+          content:
+            application/json:
+              schema:
+                type: array
+                items:
+                  $ref: '#/components/schemas/Comment'
+        '404':
+          description: 'Not found'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Error'
+      tags:
+        - comments
+  /api/1.4/patches/{patch_id}/comments/{comment_id}:
+    parameters:
+      - in: path
+        name: patch_id
+        description: A unique integer value identifying the parent patch.
+        required: true
+        schema:
+          title: Patch ID
+          type: integer
+      - in: path
+        name: comment_id
+        description: A unique integer value identifying this comment.
+        required: true
+        schema:
+          title: Comment ID
+          type: integer
+    get:
+      summary: Show a patch comment.
+      description: |
+        Retrieve a patch comment by its ID and the ID of the patch.
+      operationId: patch_comments_read
+      responses:
+        '200':
+          description: 'A patch comment'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Comment'
+        '404':
+          description: 'Not found'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Error'
+      tags:
+        - comments
+    patch:
+      summary: Update a patch comment (partial).
+      description:
+        Partially update an existing patch comment.
+        You must be a maintainer of the project that the patch comment belongs to.
+      operationId: patch_comments_partial_update
+      requestBody:
+        $ref: '#/components/requestBodies/Comment'
+      responses:
+        '200':
+          description: 'Updated patch'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Comment'
+        '400':
+          description: 'Invalid request'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/ErrorCommentUpdate'
+        '403':
+          description: 'Forbidden'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Error'
+        '404':
+          description: 'Not found'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Error'
+      tags:
+        - comments
+  /api/1.4/patches/{patch_id}/checks:
+    parameters:
+      - in: path
+        name: patch_id
+        description: A unique integer value identifying the parent patch.
+        required: true
+        schema:
+          title: Patch ID
+          type: integer
+    get:
+      summary: List checks.
+      description: |
+        List all checks for the given patch.
+      operationId: checks_list
+      parameters:
+        - $ref: '#/components/parameters/Page'
+        - $ref: '#/components/parameters/PageSize'
+        - $ref: '#/components/parameters/Order'
+        - $ref: '#/components/parameters/Search'
+        - $ref: '#/components/parameters/BeforeFilter'
+        - $ref: '#/components/parameters/SinceFilter'
+        - in: query
+          name: user
+          description: An ID or username of a user to filter checks by.
+          schema:
+            title: ''
+            type: string
+        - in: query
+          name: state
+          description: A check state to filter checks by.
+          schema:
+            title: ''
+            type: string
+            enum:
+              - pending
+              - success
+              - warning
+              - fail
+        - in: query
+          name: context
+          description: A check context to filter checks by.
+          schema:
+            title: ''
+            type: string
+      responses:
+        '200':
+          description: 'List of checks'
+          headers:
+            Link:
+              $ref: '#/components/headers/Link'
+          content:
+            application/json:
+              schema:
+                type: array
+                items:
+                  $ref: '#/components/schemas/Check'
+        '404':
+          description: 'Not found'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Error'
+      tags:
+        - checks
+    post:
+      summary: Create a check.
+      operationId: checks_create
+      security:
+        - basicAuth: []
+        - apiKeyAuth: []
+      requestBody:
+        $ref: '#/components/requestBodies/Check'
+      responses:
+        '201':
+          description: 'Created check'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Check'
+        '400':
+          description: 'Invalid request'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/ErrorCheckCreate'
+        '403':
+          description: 'Forbidden'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Error'
+        '404':
+          description: 'Not found'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Error'
+      tags:
+        - checks
+  /api/1.4/patches/{patch_id}/checks/{check_id}:
+    parameters:
+      - in: path
+        name: patch_id
+        description: A unique integer value identifying the parent patch.
+        required: true
+        schema:
+          title: Patch ID
+          type: integer
+      - in: path
+        name: check_id
+        description: A unique integer value identifying this check.
+        required: true
+        schema:
+          title: Check ID
+          type: integer
+    get:
+      summary: Show a check.
+      description: |
+        Retrieve a check by its ID.
+      operationId: checks_read
+      responses:
+        '200':
+          description: 'A check'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Check'
+        '404':
+          description: 'Not found'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Error'
+      tags:
+        - checks
+  /api/1.4/people:
+    get:
+      summary: List people.
+      description: |
+        List all people.
+        A person is anyone that has submitted a patch, a series of patches, or a comment to any project.
+      operationId: people_list
+      security:
+        - basicAuth: []
+        - apiKeyAuth: []
+      parameters:
+        - $ref: '#/components/parameters/Page'
+        - $ref: '#/components/parameters/PageSize'
+        - $ref: '#/components/parameters/Order'
+        - $ref: '#/components/parameters/Search'
+      responses:
+        '200':
+          description: 'List of people'
+          headers:
+            Link:
+              $ref: '#/components/headers/Link'
+          content:
+            application/json:
+              schema:
+                type: array
+                items:
+                  $ref: '#/components/schemas/Person'
+        '403':
+          description: 'Forbidden'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Error'
+      tags:
+        - people
+  /api/1.4/people/{id}:
+    parameters:
+      - in: path
+        name: id
+        description: A unique integer value identifying this person.
+        required: true
+        schema:
+          title: ID
+          type: integer
+    get:
+      summary: Show a person.
+      description: |
+        Retrieve a person by their ID.
+        A person is anyone that has submitted a patch, a series of patches, or a comment to any project.
+      operationId: people_read
+      security:
+        - basicAuth: []
+        - apiKeyAuth: []
+      responses:
+        '200':
+          description: 'A person'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Person'
+        '403':
+          description: 'Forbidden'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Error'
+        '404':
+          description: 'Not found'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Error'
+      tags:
+        - people
+  /api/1.4/projects:
+    get:
+      summary: List projects.
+      description: |
+        List all projects.
+      operationId: projects_list
+      parameters:
+        - $ref: '#/components/parameters/Page'
+        - $ref: '#/components/parameters/PageSize'
+        - $ref: '#/components/parameters/Order'
+        - $ref: '#/components/parameters/Search'
+      responses:
+        '200':
+          description: 'List of projects'
+          headers:
+            Link:
+              $ref: '#/components/headers/Link'
+          content:
+            application/json:
+              schema:
+                type: array
+                items:
+                  $ref: '#/components/schemas/Project'
+      tags:
+        - projects
+  /api/1.4/projects/{id}:
+    parameters:
+      - in: path
+        name: id
+        description: A unique integer value identifying this project.
+        required: true
+        schema:
+          title: ID
+          # TODO: Add regex?
+          type: string
+    get:
+      summary: Show a project.
+      description: |
+        Retrieve a project by its ID.
+      operationId: projects_read
+      responses:
+        '200':
+          description: 'A project'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Project'
+        '404':
+          description: 'Not found'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Error'
+      tags:
+        - projects
+    patch:
+      summary: Update a project (partial).
+      description:
+        Partially update an existing project.
+        You must be a maintainer of the project.
+      operationId: projects_partial_update
+      security:
+        - basicAuth: []
+        - apiKeyAuth: []
+      requestBody:
+        $ref: '#/components/requestBodies/Project'
+      responses:
+        '200':
+          description: 'Updated project'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Project'
+        '400':
+          description: 'Bad request'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/ErrorProjectUpdate'
+        '403':
+          description: 'Forbidden'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Error'
+        '404':
+          description: 'Not found'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Error'
+      tags:
+        - projects
+    put:
+      description: Update a project.
+      operationId: projects_update
+      security:
+        - basicAuth: []
+        - apiKeyAuth: []
+      requestBody:
+        $ref: '#/components/requestBodies/Project'
+      responses:
+        '200':
+          description: 'Updated project'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Project'
+        '400':
+          description: 'Bad request'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/ErrorProjectUpdate'
+        '403':
+          description: 'Forbidden'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Error'
+        '404':
+          description: 'Not found'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Error'
+      tags:
+        - projects
+  /api/1.4/series:
+    get:
+      summary: List series.
+      description: |
+        List all series.
+        A series is a collection of patches with an optional cover letter.
+      operationId: series_list
+      parameters:
+        - $ref: '#/components/parameters/Page'
+        - $ref: '#/components/parameters/PageSize'
+        - $ref: '#/components/parameters/Order'
+        - $ref: '#/components/parameters/Search'
+        - $ref: '#/components/parameters/BeforeFilter'
+        - $ref: '#/components/parameters/SinceFilter'
+        - in: query
+          name: submitter
+          description: An ID or email address of a person to filter series by.
+          schema:
+            title: ''
+            type: string
+        - in: query
+          name: project
+          description: An ID or linkname of a project to filter series by.
+          schema:
+            title: ''
+            type: string
+      responses:
+        '200':
+          description: 'List of series'
+          headers:
+            Link:
+              $ref: '#/components/headers/Link'
+          content:
+            application/json:
+              schema:
+                type: array
+                items:
+                  $ref: '#/components/schemas/Series'
+      tags:
+        - series
+  /api/1.4/series/{id}:
+    parameters:
+      - in: path
+        name: id
+        description: A unique integer value identifying this series.
+        required: true
+        schema:
+          title: ID
+          type: integer
+    get:
+      summary: Show a series.
+      description: |
+        Retrieve a series by its ID.
+        A series is a collection of patches with an optional cover letter.
+      operationId: series_read
+      responses:
+        '200':
+          description: 'A series'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Series'
+        '404':
+          description: 'Not found'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Error'
+      tags:
+        - series
+  /api/1.4/series/{id}/link/{related_series_id}:
+    parameters:
+      - in: path
+        name: id
+        description: A unique integer value identifying this series.
+        required: true
+        schema:
+          title: Series ID
+          type: integer
+      - in: path
+        name: related_series_id
+        description: A unique integer value identifying the related series.
+        required: true
+        schema:
+          title: Related series ID
+          type: integer
+    patch:
+      summary: Link both series.
+      description: |
+        Link two series makes so that they bidirectionaly relate to each other.
+
+        Series must belong to the same project to be able to be linked
+      operationId: series_link
+      responses:
+        '200':
+          description: 'Liked series'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Series'
+        '400':
+          description: 'Bad request'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Error'
+        '403':
+          description: 'Forbidden'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Error'
+        '404':
+          description: 'Not found'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Error'
+      tags:
+        - series
+  /api/1.4/users:
+    get:
+      summary: List users.
+      description: |
+        List all users.
+      operationId: users_list
+      security:
+        - basicAuth: []
+        - apiKeyAuth: []
+      parameters:
+        - $ref: '#/components/parameters/Page'
+        - $ref: '#/components/parameters/PageSize'
+        - $ref: '#/components/parameters/Order'
+        - $ref: '#/components/parameters/Search'
+      responses:
+        '200':
+          description: 'List of users'
+          headers:
+            Link:
+              $ref: '#/components/headers/Link'
+          content:
+            application/json:
+              schema:
+                type: array
+                items:
+                  $ref: '#/components/schemas/User'
+        '403':
+          description: 'Forbidden'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Error'
+      tags:
+        - users
+  /api/1.4/users/{id}:
+    parameters:
+      - in: path
+        name: id
+        description: A unique integer value identifying this user.
+        required: true
+        schema:
+          title: ID
+          type: integer
+    get:
+      summary: Show a user.
+      description: |
+        Retrieve a user by their ID.
+      operationId: users_read
+      security:
+        - basicAuth: []
+        - apiKeyAuth: []
+      responses:
+        '200':
+          description: 'A user'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/UserDetail'
+        '403':
+          description: 'Forbidden'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Error'
+        '404':
+          description: 'Not found'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Error'
+      tags:
+        - users
+    patch:
+      summary: Update a user (partial).
+      description:
+        Partially update a user account.
+        Only super users are allowed to update other user's accounts.
+      operationId: users_partial_update
+      security:
+        - basicAuth: []
+        - apiKeyAuth: []
+      requestBody:
+        $ref: '#/components/requestBodies/User'
+      responses:
+        '200':
+          description: 'Updated user'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/UserDetail'
+        '400':
+          description: 'Bad request'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/ErrorUserUpdate'
+        '403':
+          description: 'Forbidden'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Error'
+        '404':
+          description: 'Not found'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Error'
+      tags:
+        - users
+    put:
+      description: Update a user.
+      operationId: users_update
+      security:
+        - basicAuth: []
+        - apiKeyAuth: []
+      requestBody:
+        $ref: '#/components/requestBodies/User'
+      responses:
+        '200':
+          description: 'Updated user'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/UserDetail'
+        '400':
+          description: 'Bad request'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/ErrorUserUpdate'
+        '403':
+          description: 'Forbidden'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Error'
+        '404':
+          description: 'Not found'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Error'
+      tags:
+        - users
+components:
+  securitySchemes:
+    basicAuth:
+      type: http
+      scheme: basic
+      description: |
+        Basic authentication. This should be avoided and may be removed in a future API release.
+    apiKeyAuth:
+      type: http
+      scheme: token
+      description: |
+        Token-based authentication.
+    cookieAuth:
+      type: apiKey
+      in: cookie
+      name: JSESSIONID
+      description: |
+        Cookie-based authentication. This is mainly used for the browsable API.
+  parameters:
+    Page:
+      in: query
+      name: page
+      description: A page number within the paginated result set.
+      schema:
+        title: Page
+        type: integer
+    PageSize:
+      in: query
+      name: per_page
+      description: Number of results to return per page.
+      schema:
+        title: Page size
+        type: integer
+    Order:
+      in: query
+      name: order
+      description: Which field to use when ordering the results.
+      schema:
+        title: Ordering
+        type: string
+    Search:
+      in: query
+      name: q
+      description: A search term.
+      schema:
+        title: Search
+        type: string
+    BeforeFilter:
+      in: query
+      name: before
+      description: Latest date-time to retrieve results for.
+      schema:
+        title: ''
+        type: string
+    SinceFilter:
+      in: query
+      name: since
+      description: Earliest date-time to retrieve results for.
+      schema:
+        title: ''
+        type: string
+  headers:
+    Link:
+      description: |
+        Links to related resources, in the format defined by
+        [RFC 5988](https://tools.ietf.org/html/rfc5988#section-5).
+        This will include a link with relation type `next` to the
+        next page and `prev` to the previous page, if there is a next
+        or previous page. It will also include links with the
+        relation type `first` and `last` pointing to the first and
+        last page, respectively.
+      schema:
+        type: string
+  requestBodies:
+    Bundle:
+      required: true
+      description: |
+        A patch bundle.
+      content:
+        application/json:
+          schema:
+            $ref: '#/components/schemas/BundleCreateUpdate'
+        multipart/form-data:
+          schema:
+            $ref: '#/components/schemas/BundleCreateUpdate'
+        application/x-www-form-urlencoded:
+          schema:
+            $ref: '#/components/schemas/BundleCreateUpdate'
+    Check:
+      required: true
+      description: |
+        A patch check.
+      content:
+        application/json:
+          schema:
+            $ref: '#/components/schemas/CheckCreate'
+        multipart/form-data:
+          schema:
+            $ref: '#/components/schemas/CheckCreate'
+        application/x-www-form-urlencoded:
+          schema:
+            $ref: '#/components/schemas/CheckCreate'
+    Comment:
+      required: true
+      description: |
+        A patch or cover letter comment.
+      content:
+        application/json:
+          schema:
+            $ref: '#/components/schemas/CommentUpdate'
+    Patch:
+      required: true
+      description: |
+        A patch.
+      content:
+        application/json:
+          schema:
+            $ref: '#/components/schemas/PatchUpdate'
+        multipart/form-data:
+          schema:
+            $ref: '#/components/schemas/PatchUpdate'
+        application/x-www-form-urlencoded:
+          schema:
+            $ref: '#/components/schemas/PatchUpdate'
+    Project:
+      required: true
+      description: |
+        A project.
+      content:
+        application/json:
+          schema:
+            $ref: '#/components/schemas/Project'
+        multipart/form-data:
+          schema:
+            $ref: '#/components/schemas/Project'
+        application/x-www-form-urlencoded:
+          schema:
+            $ref: '#/components/schemas/Project'
+    User:
+      required: true
+      description: |
+        A user.
+      content:
+        application/json:
+          schema:
+            $ref: '#/components/schemas/UserDetail'
+        multipart/form-data:
+          schema:
+            $ref: '#/components/schemas/UserDetail'
+        application/x-www-form-urlencoded:
+          schema:
+            $ref: '#/components/schemas/UserDetail'
+  schemas:
+    Index:
+      type: object
+      name: Index
+      description: |
+        Paths to resource APIs
+      properties:
+        bundles:
+          title: Bundles URL
+          type: string
+          format: uri
+          readOnly: true
+        covers:
+          title: Covers URL
+          type: string
+          format: uri
+          readOnly: true
+        events:
+          title: Events URL
+          type: string
+          format: uri
+          readOnly: true
+        patches:
+          title: Patches URL
+          type: string
+          format: uri
+          readOnly: true
+        people:
+          title: People URL
+          type: string
+          format: uri
+          readOnly: true
+        projects:
+          title: Projects URL
+          type: string
+          format: uri
+          readOnly: true
+        users:
+          title: Users URL
+          type: string
+          format: uri
+          readOnly: true
+        series:
+          title: Series URL
+          type: string
+          format: uri
+          readOnly: true
+    Bundle:
+      required:
+        - name
+      type: object
+      title: Bundle
+      description: |
+        A patch bundle
+      properties:
+        id:
+          title: ID
+          type: integer
+          readOnly: true
+        url:
+          title: URL
+          type: string
+          format: uri
+          readOnly: true
+        web_url:
+          title: Web URL
+          type: string
+          format: uri
+          readOnly: true
+        project:
+          $ref: '#/components/schemas/ProjectEmbedded'
+        name:
+          title: Name
+          type: string
+          minLength: 1
+          maxLength: 50
+        owner:
+          title: Owner
+          readOnly: true
+          type:
+            - 'null'
+            - 'object'
+          oneOf:
+            - type: 'null'
+            - $ref: '#/components/schemas/UserEmbedded'
+        patches:
+          title: Patches
+          type: array
+          items:
+            $ref: '#/components/schemas/PatchEmbedded'
+          uniqueItems: true
+        public:
+          title: Public
+          type: boolean
+        mbox:
+          title: Mbox
+          description: |
+            A URL to download the bundle in mbox format. Patches will be
+            ordered in the same order that they are defined in the bundle.
+          type: string
+          format: uri
+          readOnly: true
+    BundleCreateUpdate:
+      type: object
+      title: Bundle create or update
+      description: |
+        The fields to set on a new or existing bundle.
+      required:
+        - name
+      properties:
+        name:
+          title: Name
+          type: string
+          minLength: 1
+          maxLength: 50
+        patches:
+          title: Patches
+          type: array
+          items:
+            type: integer
+          uniqueItems: true
+        public:
+          title: Public
+          type: boolean
+    Check:
+      type: object
+      title: Check
+      description: |
+        A patch check
+      properties:
+        id:
+          title: ID
+          type: integer
+          readOnly: true
+        url:
+          title: Url
+          type: string
+          format: uri
+          readOnly: true
+        user:
+          $ref: '#/components/schemas/UserEmbedded'
+        date:
+          title: Date
+          type: string
+          format: iso8601
+          readOnly: true
+        state:
+          title: State
+          description: The state of the check.
+          type: string
+          enum:
+            - pending
+            - success
+            - warning
+            - fail
+        target_url:
+          title: Target URL
+          description: |
+            The target URL to associate with this check. This should be
+            specific to the patch.
+          type:
+            - 'null'
+            - 'string'
+          oneOf:
+            - type: 'null'
+            - type: string
+              format: uri
+              maxLength: 200
+        context:
+          title: Context
+          description: |
+            A label to discern check from checks of other testing systems.
+          type: string
+          pattern: ^[-a-zA-Z0-9_]+$
+          minLength: 1
+          maxLength: 255
+        description:
+          title: Description
+          description: A brief description of the check.
+          type:
+            - 'null'
+            - 'string'
+    CheckCreate:
+      type: object
+      title: Check
+      description: |
+        A patch check
+      required:
+       - state
+      properties:
+        state:
+          title: State
+          description: The state of the check.
+          type: string
+          enum:
+            - pending
+            - success
+            - warning
+            - fail
+        target_url:
+          title: Target URL
+          description: |
+            The target URL to associate with this check. This should be
+            specific to the patch.
+          type:
+            - 'null'
+            - 'string'
+          oneOf:
+            - type: 'null'
+            - type: string
+              format: uri
+              maxLength: 200
+        context:
+          title: Context
+          description: |
+            A label to discern check from checks of other testing systems.
+          type: string
+          pattern: ^[-a-zA-Z0-9_]+$
+          minLength: 1
+          maxLength: 255
+        description:
+          title: Description
+          description: A brief description of the check.
+          type:
+            - 'null'
+            - 'string'
+    Comment:
+      type: object
+      title: Comment
+      description: |
+        A comment
+      properties:
+        id:
+          title: ID
+          type: integer
+          readOnly: true
+        url:
+          title: URL
+          type: string
+          format: uri
+          readOnly: true
+        web_url:
+          title: Web URL
+          type: string
+          format: uri
+          readOnly: true
+        msgid:
+          title: Message ID
+          type: string
+          readOnly: true
+          minLength: 1
+          maxLength: 255
+        list_archive_url:
+          title: List archive URL
+          readOnly: true
+          type:
+            - 'null'
+            - 'string'
+          oneOf:
+            - type: 'null'
+            - type: string
+              format: uri
+              maxLength: 2000
+        date:
+          title: Date
+          type: string
+          format: iso8601
+          readOnly: true
+        subject:
+          title: Subject
+          type: string
+          readOnly: true
+        submitter:
+          type: object
+          title: Submitter
+          readOnly: true
+          allOf:
+            - $ref: '#/components/schemas/PersonEmbedded'
+        content:
+          title: Content
+          type: string
+          readOnly: true
+          minLength: 1
+        headers:
+          title: Headers
+          anyOf:
+            - type: object
+              additionalProperties:
+                type: array
+                items:
+                  type: string
+            - type: object
+              additionalProperties:
+                type: string
+          readOnly: true
+        addressed:
+          title: Addressed
+          type:
+            - 'null'
+            - 'boolean'
+    CommentUpdate:
+      type: object
+      title: Comment update
+      description: |
+        The fields to set on an existing comment.
+      properties:
+        addressed:
+          title: Addressed
+          type:
+            - 'null'
+            - 'boolean'
+    CoverList:
+      type: object
+      title: Cover letters
+      description: |
+        A list of cover letters
+      properties:
+        id:
+          title: ID
+          type: integer
+          readOnly: true
+        url:
+          title: URL
+          type: string
+          format: uri
+          readOnly: true
+        web_url:
+          title: Web URL
+          type: string
+          format: uri
+          readOnly: true
+        project:
+          $ref: '#/components/schemas/ProjectEmbedded'
+        msgid:
+          title: Message ID
+          type: string
+          readOnly: true
+          minLength: 1
+          maxLength: 255
+        list_archive_url:
+          title: List archive URL
+          readOnly: true
+          type:
+            - 'null'
+            - 'string'
+          oneOf:
+            - type: 'null'
+            - type: string
+              format: uri
+              maxLength: 2000
+        date:
+          title: Date
+          type: string
+          format: iso8601
+          readOnly: true
+        name:
+          title: Name
+          type: string
+          readOnly: true
+          minLength: 1
+          maxLength: 255
+        submitter:
+          type: object
+          title: Submitter
+          readOnly: true
+          allOf:
+            - $ref: '#/components/schemas/PersonEmbedded'
+        mbox:
+          title: Mbox
+          description: |
+            A URL to download the cover letter in mbox format.
+          type: string
+          format: uri
+          readOnly: true
+        series:
+          type: array
+          items:
+            $ref: '#/components/schemas/SeriesEmbedded'
+          readOnly: true
+        comments:
+          title: Comments
+          type: string
+          format: uri
+          readOnly: true
+    CoverDetail:
+      type: object
+      title: Cover letters
+      description: |
+        A list of cover letters
+      allOf:
+        - $ref: '#/components/schemas/CoverList'
+        - type: object
+          properties:
+            headers:
+              title: Headers
+              anyOf:
+                - type: object
+                  additionalProperties:
+                    type: array
+                    items:
+                      type: string
+                - type: object
+                  additionalProperties:
+                    type: string
+              readOnly: true
+            content:
+              title: Content
+              type: string
+              readOnly: true
+              minLength: 1
+    EventBase:
+      type: object
+      title: Event base
+      description: |
+        Base event. Not directly used.
+      properties:
+        id:
+          title: ID
+          type: integer
+          readOnly: true
+        category:
+          title: Category
+          description: The category of the event.
+          type: string
+          readOnly: true
+        project:
+          $ref: '#/components/schemas/ProjectEmbedded'
+        date:
+          title: Date
+          description: The time this event was created.
+          type: string
+          format: iso8601
+          readOnly: true
+        actor:
+          title: Actor
+          description: The user that caused/created this event.
+          readOnly: true
+          type:
+            - 'null'
+            - 'object'
+          oneOf:
+            - type: 'null'
+            - $ref: '#/components/schemas/UserEmbedded'
+        payload:
+          type: object
+    EventCoverCreated:
+      title: Cover created event
+      description: |
+        A cover created event.
+      allOf:
+        - $ref: '#/components/schemas/EventBase'
+        - type: object
+          properties:
+            category:
+              enum:
+                - cover-created
+            payload:
+              properties:
+                cover:
+                  $ref: '#/components/schemas/CoverEmbedded'
+    EventPatchCreated:
+      title: Patch created event
+      description: |
+        A patch created event.
+      allOf:
+        - $ref: '#/components/schemas/EventBase'
+        - type: object
+          properties:
+            category:
+              enum:
+                - patch-created
+            payload:
+              properties:
+                patch:
+                  $ref: '#/components/schemas/PatchEmbedded'
+    EventPatchCompleted:
+      title: Patch completed event
+      description: |
+        A patch completed event.
+      allOf:
+        - $ref: '#/components/schemas/EventBase'
+        - type: object
+          properties:
+            category:
+              enum:
+                - patch-completed
+            payload:
+              properties:
+                patch:
+                  $ref: '#/components/schemas/PatchEmbedded'
+                series:
+                  $ref: '#/components/schemas/SeriesEmbedded'
+    EventPatchStateChanged:
+      title: Patch state change event
+      description: |
+        A patch state changed event.
+      allOf:
+        - $ref: '#/components/schemas/EventBase'
+        - type: object
+          properties:
+            category:
+              enum:
+                - patch-state-changed
+            payload:
+              properties:
+                patch:
+                  $ref: '#/components/schemas/PatchEmbedded'
+                previous_state:
+                  title: Previous state
+                  type: string
+                current_state:
+                  title: Current state
+                  type: string
+    EventPatchRelationChanged:
+      title: Patch relation change event
+      description: |
+        A patch relation changed event.
+      allOf:
+        - $ref: '#/components/schemas/EventBase'
+        - type: object
+          properties:
+            category:
+              enum:
+                - patch-relation-changed
+            payload:
+              properties:
+                patch:
+                  $ref: '#/components/schemas/PatchEmbedded'
+                previous_relation:
+                  title: Previous relation
+                  type:
+                    - 'null'
+                    - 'string'
+                current_relation:
+                  title: Current relation
+                  type:
+                    - 'null'
+                    - 'string'
+    EventPatchDelegated:
+      title: Patch delegated event
+      description: |
+        A patch delegated event.
+      allOf:
+        - $ref: '#/components/schemas/EventBase'
+        - type: object
+          properties:
+            category:
+              enum:
+                - patch-delegated
+            payload:
+              properties:
+                patch:
+                  $ref: '#/components/schemas/PatchEmbedded'
+                previous_delegate:
+                  title: Previous delegate
+                  type:
+                    - 'null'
+                    - 'object'
+                  oneOf:
+                    - type: 'null'
+                    - $ref: '#/components/schemas/UserEmbedded'
+                current_delegate:
+                  title: Current delegate
+                  type:
+                    - 'null'
+                    - 'object'
+                  oneOf:
+                    - type: 'null'
+                    - $ref: '#/components/schemas/UserEmbedded'
+    EventCheckCreated:
+      title: Check create event
+      description: |
+        A check created event.
+      allOf:
+        - $ref: '#/components/schemas/EventBase'
+        - type: object
+          properties:
+            category:
+              enum:
+                - check-created
+            payload:
+              properties:
+                patch:
+                  $ref: '#/components/schemas/PatchEmbedded'
+                check:
+                  $ref: '#/components/schemas/CheckEmbedded'
+    EventSeriesCreated:
+      title: Series create event
+      description: |
+        A series created event.
+      allOf:
+        - $ref: '#/components/schemas/EventBase'
+        - type: object
+          properties:
+            category:
+              enum:
+                - series-created
+            payload:
+              properties:
+                series:
+                  $ref: '#/components/schemas/SeriesEmbedded'
+    EventSeriesCompleted:
+      title: Series completed event
+      description: |
+        A series completed event.
+      allOf:
+        - $ref: '#/components/schemas/EventBase'
+        - type: object
+          properties:
+            category:
+              enum:
+                - series-completed
+            payload:
+              properties:
+                series:
+                  $ref: '#/components/schemas/SeriesEmbedded'
+    EventCoverCommentCreated:
+      title: Cover letter comment create event
+      description: |
+        A comment letter comment created event.
+      allOf:
+        - $ref: '#/components/schemas/EventBase'
+        - type: object
+          properties:
+            category:
+              enum:
+                - cover-comment-created
+            payload:
+              properties:
+                cover:
+                  $ref: '#/components/schemas/CoverEmbedded'
+                comment:
+                  $ref: '#/components/schemas/CommentEmbedded'
+    EventPatchCommentCreated:
+      title: Patch comment create event
+      description: |
+        A patch comment created event.
+      allOf:
+        - $ref: '#/components/schemas/EventBase'
+        - type: object
+          properties:
+            category:
+              enum:
+                - patch-comment-created
+            payload:
+              properties:
+                patch:
+                  $ref: '#/components/schemas/PatchEmbedded'
+                comment:
+                  $ref: '#/components/schemas/CommentEmbedded'
+    PatchList:
+      required:
+        - state
+        - delegate
+      type: object
+      title: Patches
+      description: |
+        A list of patches.
+      properties:
+        id:
+          title: ID
+          type: integer
+          readOnly: true
+        url:
+          title: URL
+          type: string
+          format: uri
+          readOnly: true
+        web_url:
+          title: Web URL
+          type: string
+          format: uri
+          readOnly: true
+        project:
+          $ref: '#/components/schemas/ProjectEmbedded'
+        msgid:
+          title: Message ID
+          type: string
+          readOnly: true
+          minLength: 1
+          maxLength: 255
+        list_archive_url:
+          title: List archive URL
+          readOnly: true
+          type:
+            - 'null'
+            - 'string'
+          oneOf:
+            - type: 'null'
+            - type: string
+              format: uri
+              maxLength: 2000
+        date:
+          title: Date
+          type: string
+          format: iso8601
+          readOnly: true
+        name:
+          title: Name
+          type: string
+          readOnly: true
+          minLength: 1
+          maxLength: 255
+        commit_ref:
+          title: Commit ref
+          type:
+            - 'null'
+            - 'string'
+          oneOf:
+            - type: 'null'
+            - type: string
+              maxLength: 255
+        pull_url:
+          title: Pull URL
+          type:
+            - 'null'
+            - 'string'
+          oneOf:
+            - type: 'null'
+            - type: string
+              format: uri
+              maxLength: 255
+        state:
+          title: State
+          type: string
+        archived:
+          title: Archived
+          type: boolean
+        hash:
+          title: Hash
+          type: string
+          readOnly: true
+          minLength: 1
+        submitter:
+          type: object
+          title: Submitter
+          readOnly: true
+          allOf:
+            - $ref: '#/components/schemas/PersonEmbedded'
+        delegate:
+          title: Delegate
+          readOnly: true
+          type:
+            - 'null'
+            - 'object'
+          oneOf:
+            - type: 'null'
+            - $ref: '#/components/schemas/UserEmbedded'
+        mbox:
+          title: Mbox
+          description: |
+            A URL to download the patch in mbox format. Add the `series=*`
+            querystring parameter to include series dependencies in the mbox
+            file.
+          type: string
+          format: uri
+          readOnly: true
+        series:
+          type: array
+          items:
+            $ref: '#/components/schemas/SeriesEmbedded'
+          readOnly: true
+        comments:
+          title: Comments
+          type: string
+          format: uri
+          readOnly: true
+        check:
+          title: Check
+          type: string
+          readOnly: true
+          enum:
+            - pending
+            - success
+            - warning
+            - fail
+        checks:
+          title: Checks
+          type: string
+          format: uri
+          readOnly: true
+        tags:
+          title: Tags
+          type: object
+          additionalProperties:
+            type: string
+          readOnly: true
+        related:
+          title: Relations
+          type: array
+          items:
+            $ref: '#/components/schemas/PatchEmbedded'
+    PatchDetail:
+      type: object
+      title: Patches
+      description: |
+        A list of patches.
+      allOf:
+        - $ref: '#/components/schemas/PatchList'
+        - type: object
+          properties:
+            headers:
+              title: Headers
+              anyOf:
+                - type: object
+                  additionalProperties:
+                    type: array
+                    items:
+                      type: string
+                - type: object
+                  additionalProperties:
+                    type: string
+              readOnly: true
+            content:
+              title: Content
+              type: string
+              readOnly: true
+              minLength: 1
+            diff:
+              title: Diff
+              type: string
+              readOnly: true
+              minLength: 1
+            prefixes:
+              title: Prefixes
+              type: array
+              items:
+                type: string
+              readOnly: true
+    PatchUpdate:
+      type: object
+      title: Patch update
+      description: |
+        The fields to set on an existing patch.
+      properties:
+        commit_ref:
+          title: Commit ref
+          type:
+            - 'null'
+            - 'string'
+          oneOf:
+            - type: 'null'
+            - type: string
+              maxLength: 255
+        pull_url:
+          title: Pull URL
+          type:
+            - 'null'
+            - 'string'
+          oneOf:
+            - type: 'null'
+            - type: string
+              format: uri
+              maxLength: 255
+        state:
+          title: State
+          type: string
+        archived:
+          title: Archived
+          type: boolean
+        delegate:
+          title: Delegate
+          type:
+            - 'null'
+            - 'integer'
+        related:
+          title: Relations
+          type: array
+          items:
+            type: integer
+    Person:
+      type: object
+      title: Person
+      description: |
+        A person
+      properties:
+        id:
+          title: ID
+          type: integer
+          readOnly: true
+        url:
+          title: URL
+          type: string
+          format: uri
+          readOnly: true
+        name:
+          title: Name
+          type: string
+          readOnly: true
+          minLength: 1
+          maxLength: 255
+        email:
+          title: Email
+          type: string
+          format: email
+          readOnly: true
+          minLength: 1
+          maxLength: 255
+        user:
+          title: User
+          readOnly: true
+          type:
+            - 'null'
+            - 'object'
+          oneOf:
+            - type: 'null'
+            - $ref: '#/components/schemas/UserEmbedded'
+    Project:
+      type: object
+      title: Project
+      description: |
+        A project.
+      properties:
+        id:
+          title: ID
+          type: integer
+          readOnly: true
+        url:
+          title: URL
+          type: string
+          format: uri
+          readOnly: true
+        name:
+          title: Name
+          type: string
+          readOnly: true
+          minLength: 1
+          maxLength: 255
+        link_name:
+          title: Link name
+          type: string
+          readOnly: true
+          minLength: 1
+          maxLength: 255
+        list_id:
+          title: List ID
+          type: string
+          readOnly: true
+          minLength: 1
+          maxLength: 255
+        list_email:
+          title: List email
+          type: string
+          format: email
+          readOnly: true
+          minLength: 1
+          maxLength: 200
+        web_url:
+          title: Web URL
+          type: string
+          format: uri
+          maxLength: 2000
+        scm_url:
+          title: SCM URL
+          type: string
+          format: uri
+          maxLength: 2000
+        webscm_url:
+          title: Web SCM URL
+          type: string
+          format: uri
+          maxLength: 2000
+        maintainers:
+          type: array
+          items:
+            $ref: '#/components/schemas/UserEmbedded'
+          readOnly: true
+          uniqueItems: true
+        subject_match:
+          title: Subject match
+          description: |
+            Regex to match the subject against if only part of emails sent to
+            the list belongs to this project. Will be used with IGNORECASE and
+            MULTILINE flags. If rules for more projects match the first one
+            returned from DB is chosen; empty field serves as a default for
+            every email which has no other match.
+          type: string
+          readOnly: true
+          maxLength: 64
+        list_archive_url:
+          title: List archive URL
+          type:
+            - 'null'
+            - 'string'
+          oneOf:
+            - type: 'null'
+            - type: string
+              format: uri
+              maxLength: 2000
+        list_archive_url_format:
+          title: List archive URL format
+          description: |
+            URL format for the list archive's Message-ID redirector. {} will be
+            replaced by the Message-ID.
+          type:
+            - 'null'
+            - 'string'
+          oneOf:
+            - type: 'null'
+            - type: string
+              format: uri
+              maxLength: 2000
+        commit_url_format:
+          title: Web SCM URL format for a particular commit
+          type: string
+    Series:
+      type: object
+      title: Series
+      description: |
+        A series
+      properties:
+        id:
+          title: ID
+          type: integer
+          readOnly: true
+        url:
+          title: URL
+          type: string
+          format: uri
+          readOnly: true
+        web_url:
+          title: Web URL
+          type: string
+          format: uri
+          readOnly: true
+        project:
+          $ref: '#/components/schemas/ProjectEmbedded'
+        name:
+          title: Name
+          description: |
+            An optional name to associate with the series, e.g. "John's PCI
+            series".
+          type:
+            - 'null'
+            - 'string'
+          oneOf:
+            - type: 'null'
+            - type: 'string'
+              maxLength: 255
+        date:
+          title: Date
+          type: string
+          format: iso8601
+          readOnly: true
+        submitter:
+          type: object
+          title: Submitter
+          readOnly: true
+          allOf:
+            - $ref: '#/components/schemas/PersonEmbedded'
+        version:
+          title: Version
+          description: |
+            Version of series as indicated by the subject prefix(es).
+          type: integer
+        total:
+          title: Total
+          description: |
+            Number of patches in series as indicated by the subject prefix(es).
+          type: integer
+          readOnly: true
+        received_total:
+          title: Received total
+          type: integer
+          readOnly: true
+        received_all:
+          title: Received all
+          type: boolean
+          readOnly: true
+        mbox:
+          title: Mbox
+          description: |
+            A URL to download the series in mbox format.
+          type: string
+          format: uri
+          readOnly: true
+        cover_letter:
+          $ref: '#/components/schemas/CoverEmbedded'
+        patches:
+          title: Patches
+          type: array
+          items:
+            $ref: '#/components/schemas/PatchEmbedded'
+          readOnly: true
+          uniqueItems: true
+        related_series:
+          title: Related series
+          type: array
+          items:
+            $ref: '#/components/schemas/Series'
+          readOnly: true
+          uniqueItems: true
+    User:
+      type: object
+      title: User
+      description: |
+        A user
+      properties:
+        id:
+          title: ID
+          type: integer
+          readOnly: true
+        url:
+          title: URL
+          type: string
+          format: uri
+          readOnly: true
+        username:
+          title: Username
+          type: string
+          readOnly: true
+          minLength: 1
+          maxLength: 150
+        first_name:
+          title: First name
+          type: string
+          maxLength: 30
+        last_name:
+          title: Last name
+          type: string
+          maxLength: 150
+        email:
+          title: Email address
+          type: string
+          format: email
+          readOnly: true
+          minLength: 1
+    UserDetail:
+      type: object
+      title: User
+      description: |
+        A user
+      allOf:
+        - $ref: '#/components/schemas/User'
+        - type: object
+          properties:
+            settings:
+              type: object
+              properties:
+                send_email:
+                  title: Send email
+                  description: |
+                    Whether Patchwork should send email on your behalf.
+                    Only present and configurable for your account.
+                  type: boolean
+                items_per_page:
+                  title: Items per page
+                  description: |
+                    Number of items to display per page (web UI).
+                    Only present and configurable for your account.
+                  type: integer
+                show_ids:
+                  title: Show IDs
+                  description: |
+                    Show click-to-copy IDs in the list view (web UI).
+                    Only present and configurable for your account.
+                  type: boolean
+    CheckEmbedded:
+      type: object
+      title: Check
+      description: |
+        A patch check
+      properties:
+        id:
+          title: ID
+          type: integer
+          readOnly: true
+        url:
+          title: Url
+          type: string
+          format: uri
+          readOnly: true
+        date:
+          title: Date
+          type: string
+          format: iso8601
+          readOnly: true
+        state:
+          title: State
+          description: The state of the check.
+          type: string
+          readOnly: true
+          enum:
+            - pending
+            - success
+            - warning
+            - fail
+        target_url:
+          title: Target url
+          description: |
+            The target URL to associate with this check. This should be specific
+            to the patch.
+          readOnly: true
+          type:
+            - 'null'
+            - 'string'
+          oneOf:
+            - type: 'null'
+            - type: string
+              format: uri
+              maxLength: 200
+        context:
+          title: Context
+          description: |
+            A label to discern check from checks of other testing systems.
+          type: string
+          pattern: ^[-a-zA-Z0-9_]+$
+          maxLength: 255
+          minLength: 1
+          readOnly: true
+    CommentEmbedded:
+      type: object
+      title: Comment
+      description: |
+        A comment
+      properties:
+        id:
+          title: ID
+          type: integer
+          readOnly: true
+        url:
+          title: URL
+          type: string
+          format: uri
+          readOnly: true
+        web_url:
+          title: Web URL
+          type: string
+          format: uri
+          readOnly: true
+        msgid:
+          title: Message ID
+          type: string
+          readOnly: true
+          minLength: 1
+        list_archive_url:
+          title: List archive URL
+          readOnly: true
+          type:
+            - 'null'
+            - 'string'
+        date:
+          title: Date
+          type: string
+          format: iso8601
+          readOnly: true
+        name:
+          title: Name
+          type: string
+          readOnly: true
+          minLength: 1
+    CoverEmbedded:
+      type: object
+      title: Cover letter
+      description: |
+        A cover letter
+      properties:
+        id:
+          title: ID
+          type: integer
+          readOnly: true
+        url:
+          title: URL
+          type: string
+          format: uri
+          readOnly: true
+        web_url:
+          title: Web URL
+          type: string
+          format: uri
+          readOnly: true
+        msgid:
+          title: Message ID
+          type: string
+          readOnly: true
+          minLength: 1
+        list_archive_url:
+          title: List archive URL
+          readOnly: true
+          type:
+            - 'null'
+            - 'string'
+        date:
+          title: Date
+          type: string
+          format: iso8601
+          readOnly: true
+        name:
+          title: Name
+          type: string
+          readOnly: true
+          minLength: 1
+        mbox:
+          title: Mbox
+          description: |
+            A URL to download the cover letter in mbox format.
+          type: string
+          format: uri
+          readOnly: true
+    PatchEmbedded:
+      type: object
+      title: Patch
+      description: |
+        A patch
+      properties:
+        id:
+          title: ID
+          type: integer
+          readOnly: true
+        url:
+          title: URL
+          type: string
+          format: uri
+          readOnly: true
+        web_url:
+          title: Web URL
+          type: string
+          format: uri
+          readOnly: true
+        msgid:
+          title: Message ID
+          type: string
+          readOnly: true
+          minLength: 1
+        list_archive_url:
+          title: List archive URL
+          readOnly: true
+          type:
+            - 'null'
+            - 'string'
+        date:
+          title: Date
+          type: string
+          format: iso8601
+          readOnly: true
+        name:
+          title: Name
+          type: string
+          readOnly: true
+          minLength: 1
+        mbox:
+          title: Mbox
+          description: |
+            A URL to download the patch in mbox format. Add the `series=*`
+            querystring parameter to include series dependencies in the mbox
+            file.
+          type: string
+          format: uri
+          readOnly: true
+    PersonEmbedded:
+      type: object
+      title: Person
+      description: |
+        A person
+      properties:
+        id:
+          title: ID
+          type: integer
+          readOnly: true
+        url:
+          title: URL
+          type: string
+          format: uri
+          readOnly: true
+        name:
+          title: Name
+          type: string
+          readOnly: true
+          minLength: 1
+        email:
+          title: Email
+          type: string
+          format: email
+          readOnly: true
+          minLength: 1
+    ProjectEmbedded:
+      type: object
+      title: Project
+      description: |
+        A project
+      properties:
+        id:
+          title: ID
+          type: integer
+          readOnly: true
+        url:
+          title: URL
+          type: string
+          format: uri
+          readOnly: true
+        name:
+          title: Name
+          type: string
+          readOnly: true
+          minLength: 1
+        link_name:
+          title: Link name
+          type: string
+          readOnly: true
+          maxLength: 255
+          minLength: 1
+        list_id:
+          title: List ID
+          type: string
+          readOnly: true
+          maxLength: 255
+          minLength: 1
+        list_email:
+          title: List email
+          type: string
+          format: email
+          readOnly: true
+          maxLength: 200
+          minLength: 1
+        web_url:
+          title: Web URL
+          type: string
+          format: uri
+          readOnly: true
+          maxLength: 2000
+        scm_url:
+          title: SCM URL
+          type: string
+          format: uri
+          readOnly: true
+          maxLength: 2000
+        webscm_url:
+          title: WebSCM URL
+          type: string
+          format: uri
+          readOnly: true
+          maxLength: 2000
+        list_archive_url:
+          title: List archive URL
+          type:
+            - 'null'
+            - 'string'
+          oneOf:
+            - type: 'null'
+            - type: string
+              format: uri
+              maxLength: 2000
+        list_archive_url_format:
+          title: List archive URL format
+          description: |
+            URL format for the list archive's Message-ID redirector. {} will be
+            replaced by the Message-ID.
+          type:
+            - 'null'
+            - 'string'
+          oneOf:
+            - type: 'null'
+            - type: string
+              format: uri
+              maxLength: 2000
+        commit_url_format:
+          title: Web SCM URL format for a particular commit
+          type: string
+          readOnly: true
+    SeriesEmbedded:
+      type: object
+      title: Series
+      description: |
+        A series
+      properties:
+        id:
+          title: ID
+          type: integer
+          readOnly: true
+        url:
+          title: URL
+          type: string
+          format: uri
+          readOnly: true
+        web_url:
+          title: Web URL
+          type: string
+          format: uri
+          readOnly: true
+        name:
+          title: Name
+          description: |
+            An optional name to associate with the series, e.g. "John's PCI
+            series".
+          readOnly: true
+          type:
+            - 'null'
+            - 'string'
+          oneOf:
+            - type: 'null'
+            - type: string
+              maxLength: 255
+        date:
+          title: Date
+          type: string
+          format: iso8601
+          readOnly: true
+        version:
+          title: Version
+          description: |
+            Version of series as indicated by the subject prefix(es).
+          type: integer
+          readOnly: true
+        mbox:
+          title: Mbox
+          description: |
+            A URL to download the series in mbox format.
+          type: string
+          format: uri
+          readOnly: true
+    UserEmbedded:
+      type: object
+      title: User
+      description: |
+        A user
+      properties:
+        id:
+          title: ID
+          type: integer
+          readOnly: true
+        url:
+          title: URL
+          type: string
+          format: uri
+          readOnly: true
+        username:
+          title: Username
+          type: string
+          readOnly: true
+          minLength: 1
+          maxLength: 150
+        first_name:
+          title: First name
+          type: string
+          maxLength: 30
+          readOnly: true
+        last_name:
+          title: Last name
+          type: string
+          maxLength: 150
+          readOnly: true
+        email:
+          title: Email address
+          type: string
+          format: email
+          readOnly: true
+          minLength: 1
+    Error:
+      type: object
+      title: A generic error.
+      description: |
+        A generic error.
+      properties:
+        detail:
+          title: Detail
+          type: string
+          readOnly: true
+    ErrorBundleCreateUpdate:
+      type: object
+      title: A bundle creation or update error.
+      description: |
+        A mapping of field names to validation failures.
+      properties:
+        name:
+          title: Name
+          type: array
+          items:
+            type: string
+          readOnly: true
+        patches:
+          title: Patches
+          type: array
+          items:
+            type: string
+          readOnly: true
+        public:
+          title: Public
+          type: array
+          items:
+            type: string
+    ErrorCheckCreate:
+      type: object
+      title: A check creation error.
+      description: |
+        A mapping of field names to validation failures.
+      properties:
+        state:
+          title: State
+          type: array
+          items:
+            type: string
+          readOnly: true
+        target_url:
+          title: Target URL
+          type: array
+          items:
+            type: string
+          readOnly: true
+        context:
+          title: Context
+          type: array
+          items:
+            type: string
+          readOnly: true
+        description:
+          title: Description
+          type: array
+          items:
+            type: string
+          readOnly: true
+    ErrorCommentUpdate:
+      type: object
+      title: A comment update error.
+      description: |
+        A mapping of field names to validation failures.
+      properties:
+        addressed:
+          title: Addressed
+          type: array
+          items:
+            type: string
+    ErrorPatchUpdate:
+      type: object
+      title: A patch update error.
+      description: |
+        A mapping of field names to validation failures.
+      properties:
+        state:
+          title: State
+          type: array
+          items:
+            type: string
+          readOnly: true
+        delegate:
+          title: Delegate
+          type: array
+          items:
+            type: string
+          readOnly: true
+        commit_ref:
+          title: Commit ref
+          type: array
+          items:
+            type: string
+          readOnly: true
+        archived:
+          title: Archived
+          type: array
+          items:
+            type: string
+          readOnly: true
+    ErrorProjectUpdate:
+      type: object
+      title: A project update error.
+      description: |
+        A mapping of field names to validation failures.
+      properties:
+        web_url:
+          title: Web URL
+          type: string
+          format: uri
+          readOnly: true
+        scm_url:
+          title: SCM URL
+          type: string
+          format: uri
+          readOnly: true
+        webscm_url:
+          title: Web SCM URL
+          type: string
+          format: uri
+          readOnly: true
+    ErrorUserUpdate:
+      type: object
+      title: A user update error.
+      description: |
+        A mapping of field names to validation failures.
+      properties:
+        first_name:
+          title: First name
+          type: string
+          readOnly: true
+        last_name:
+          title: First name
+          type: string
+          readOnly: true
+tags:
+  - name: api
+    description: General API operations
+  - name: patches
+    description: Patch operations
+  - name: covers
+    description: Cover letter operations
+  - name: series
+    description: Series operations
+  - name: comments
+    description: Comment operations
+  - name: people
+    description: Submitter operations
+  - name: users
+    description: User operations
+  - name: bundles
+    description: Bundle operations
+  - name: projects
+    description: Project operations
+  - name: bundles
+    description: Bundle operations
+  - name: checks
+    description: Check operations
+  - name: events
+    description: Event operations
diff --git a/patchwork/api/series.py b/patchwork/api/series.py
index 23060839..a66a6efc 100644
--- a/patchwork/api/series.py
+++ b/patchwork/api/series.py
@@ -5,8 +5,10 @@
 
 from rest_framework.generics import ListAPIView
 from rest_framework.generics import RetrieveAPIView
+from rest_framework.generics import GenericAPIView
 from rest_framework.serializers import SerializerMethodField
 from rest_framework.exceptions import ValidationError
+from rest_framework.response import Response
 
 from patchwork.api.base import BaseHyperlinkedModelSerializer
 from patchwork.api.base import PatchworkPermission
@@ -119,3 +121,20 @@ class SeriesDetail(SeriesMixin, RetrieveAPIView):
     """Show a series."""
 
     pass
+
+
+class SeriesLink(SeriesMixin, GenericAPIView):
+    """Link two series by their related."""
+
+    def patch(self, request, *args, **kwargs):
+        series = Series.objects.get(id=kwargs['pk'])
+        related_series = Series.objects.get(id=kwargs['related_series_id'])
+
+        series.related_series.set([related_series])
+
+        serializer = self.get_serializer(
+            series, data=request.data, partial=True
+        )
+        serializer.is_valid(raise_exception=True)
+
+        return Response(serializer.data)
diff --git a/patchwork/urls.py b/patchwork/urls.py
index ecd3668d..73ac74e7 100644
--- a/patchwork/urls.py
+++ b/patchwork/urls.py
@@ -292,6 +292,11 @@
             api_series_views.SeriesDetail.as_view(),
             name='api-series-detail',
         ),
+        path(
+            'series/<int:pk>/link/<int:related_series_id>',
+            api_series_views.SeriesLink.as_view(),
+            name='api-series-link',
+        ),
         path(
             'bundles/',
             api_bundle_views.BundleList.as_view(),