diff --git a/CHANGELOG.md b/CHANGELOG.md
index 33975166..19d9a009 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -16,7 +16,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   - `recovery-form` to link to the credentials recovery page.
 - `GET /me`: New Relation types `alternate` and `related` for user-specific external pages. [#404](https://github.com/Open-EO/openeo-api/issues/404)
 - `GET /credentials/oidc`: Allow `authorization_code` and `urn:ietf:params:oauth:grant-type:device_code` (both without PKCE) as grants for `default_clients`. [#410](https://github.com/Open-EO/openeo-api/issues/410)
-- `GET /jobs` and `GET /services`: Added `create_parameters` property in responses to define the parameters that can be submitted when creating jobs or services. [#276](https://github.com/Open-EO/openeo-api/issues/276)
+- Added `GET /processing_options` to define the parameters that can be submitted when creating jobs or services. [#276](https://github.com/Open-EO/openeo-api/issues/276)
 - `GET /jobs` and `GET /jobs/{job_id}`: Added a links property that can for example link to results and logs. [#453](https://github.com/Open-EO/openeo-api/issues/453)
 - `GET /jobs/{job_id}/results`:
   - Recommendation to add a link with relation type `canonical` which points to a signed URL with the same content as the response. [#397](https://github.com/Open-EO/openeo-api/issues/397)
diff --git a/openapi.yaml b/openapi.yaml
index e2779d58..acf43aa6 100644
--- a/openapi.yaml
+++ b/openapi.yaml
@@ -2386,6 +2386,41 @@ paths:
           $ref: '#/components/responses/client_error_auth'
         5XX:
           $ref: '#/components/responses/server_error'
+  /processing_options:
+    get:
+      summary: Additional processing options
+      operationId: list-processing-options
+      description: |-
+        Lists additional custom processing options that a back-end offers for the
+        different processing modes (synchronous processing, batch jobs, secondary web services).
+
+        The options specified here can be added to the corresponding `POST` requests
+        at the top-level of the object sent in the payload.
+      tags:
+        - Capabilities
+        - Data Processing
+        - Batch Jobs
+        - Secondary Services
+      security:
+        - {}
+        - Bearer: []
+      responses:
+        '200':
+          description: >-
+            An object with a list of parameters per processing mode.
+          content:
+            application/json:
+              schema:
+                description: Processing parameters per processing mode.
+                type: object
+                properties:
+                  create_job_parameters:
+                    $ref: '#/components/schemas/processing_create_parameters'
+                  create_service_parameters:
+                    $ref: '#/components/schemas/processing_create_parameters'
+                  create_synchronous_parameters:
+                    $ref: '#/components/schemas/processing_create_parameters'
+
   /service_types:
     get:
       summary: Supported secondary web service protocols
@@ -2582,8 +2617,6 @@ paths:
                       $ref: '#/components/schemas/service'
                   links:
                     $ref: '#/components/schemas/links_pagination'
-                  create_parameters:
-                    $ref: '#/components/schemas/processing_create_parameters'
         4XX:
           $ref: '#/components/responses/client_error_auth'
         5XX:
@@ -2830,8 +2863,6 @@ paths:
                       $ref: '#/components/schemas/batch_job'
                   links:
                     $ref: '#/components/schemas/links_pagination'
-                  create_parameters:
-                    $ref: '#/components/schemas/processing_create_parameters'
         4XX:
           $ref: '#/components/responses/client_error_auth'
         5XX: