diff --git a/bigquery_etl/schema/global.yaml b/bigquery_etl/schema/global.yaml
index 596a3a9d252..4552c2539a3 100644
--- a/bigquery_etl/schema/global.yaml
+++ b/bigquery_etl/schema/global.yaml
@@ -89,6 +89,14 @@ fields:
 - name: dau
   type: INTEGER
   description: The number of daily active users.
+- name: first_run_date
+  type: DATE
+  mode: NULLABLE
+  description: The date of the first run of the application.
+- name: first_seen_date
+  type: DATE
+  mode: NULLABLE
+  description: Date when the server first received a ping from this client.
 - name: wau
   type: INTEGER
   description: The number of weekly active users.
diff --git a/sql/moz-fx-data-shared-prod/amo_prod/amo_stats_dau_v2/schema.yaml b/sql/moz-fx-data-shared-prod/amo_prod/amo_stats_dau_v2/schema.yaml
new file mode 100644
index 00000000000..bd3478392c6
--- /dev/null
+++ b/sql/moz-fx-data-shared-prod/amo_prod/amo_stats_dau_v2/schema.yaml
@@ -0,0 +1,72 @@
+fields:
+- mode: NULLABLE
+  name: submission_date
+  type: DATE
+  description: The date when the telemetry ping is received on the server side.
+- name: addon_id
+  type: STRING
+  mode: NULLABLE
+- name: dau
+  type: INTEGER
+  mode: NULLABLE
+  description: The number of daily active users.
+- name: dau_by_addon_version
+  type: RECORD
+  mode: REPEATED
+  fields:
+  - name: key
+    type: STRING
+    mode: NULLABLE
+  - name: value
+    type: INTEGER
+    mode: NULLABLE
+- name: dau_by_app_version
+  type: RECORD
+  mode: REPEATED
+  fields:
+  - name: key
+    type: STRING
+    mode: NULLABLE
+  - name: value
+    type: INTEGER
+    mode: NULLABLE
+- name: dau_by_fenix_build
+  type: RECORD
+  mode: REPEATED
+  fields:
+  - name: key
+    type: STRING
+    mode: NULLABLE
+  - name: value
+    type: INTEGER
+    mode: NULLABLE
+- name: dau_by_locale
+  type: RECORD
+  mode: REPEATED
+  fields:
+  - name: key
+    type: STRING
+    mode: NULLABLE
+  - name: value
+    type: INTEGER
+    mode: NULLABLE
+- name: dau_by_country
+  type: RECORD
+  mode: REPEATED
+  fields:
+  - name: key
+    type: STRING
+    mode: NULLABLE
+  - name: value
+    type: INTEGER
+    mode: NULLABLE
+- name: dau_by_app_os
+  type: RECORD
+  mode: REPEATED
+  fields:
+  - name: key
+    type: STRING
+    mode: NULLABLE
+  - name: value
+    type: INTEGER
+    mode: NULLABLE
diff --git a/sql/moz-fx-data-shared-prod/amo_prod/desktop_addons_by_client_v1/schema.yaml b/sql/moz-fx-data-shared-prod/amo_prod/desktop_addons_by_client_v1/schema.yaml
new file mode 100644
index 00000000000..2496fa432c7
--- /dev/null
+++ b/sql/moz-fx-data-shared-prod/amo_prod/desktop_addons_by_client_v1/schema.yaml
@@ -0,0 +1,40 @@
+fields:
+- mode: NULLABLE
+  name: submission_date
+  type: DATE
+  description: The date when the telemetry ping is received on the server side.
+- name: client_id
+  type: STRING
+  mode: NULLABLE
+  description: A unique identifier (UUID) for the client.
+- name: sample_id
+  type: INTEGER
+  mode: NULLABLE
+  description: A number, 0-99, that samples by client_id and allows filtering data
+    for analysis. It is a pipeline-generated artifact that should match between pings.
+- name: app_version
+  type: STRING
+  mode: NULLABLE
+  description: User visible version string (e.g. "1.0.3") for the browser.
+- name: country
+  type: STRING
+  mode: NULLABLE
+  description: Name of the country in which the activity took place, as determined
+    by the IP geolocation.
+- name: locale
+  type: STRING
+  mode: NULLABLE
+  description: Set of language- and/or country-based preferences for a user interface.
+- name: app_os
+  type: STRING
+  mode: NULLABLE
+- name: addons
+  type: RECORD
+  mode: REPEATED
+  fields:
+  - name: id
+    type: STRING
+    mode: NULLABLE
+  - name: version
+    type: STRING
+    mode: NULLABLE
diff --git a/sql/moz-fx-data-shared-prod/amo_prod/fenix_addons_by_client_v1/schema.yaml b/sql/moz-fx-data-shared-prod/amo_prod/fenix_addons_by_client_v1/schema.yaml
new file mode 100644
index 00000000000..3c33e70ae4e
--- /dev/null
+++ b/sql/moz-fx-data-shared-prod/amo_prod/fenix_addons_by_client_v1/schema.yaml
@@ -0,0 +1,40 @@
+fields:
+- mode: NULLABLE
+  name: submission_date
+  type: DATE
+  description: The date when the telemetry ping is received on the server side.
+- name: client_id
+  type: STRING
+  mode: NULLABLE
+  description: A unique identifier (UUID) for the client.
+- name: sample_id
+  type: INTEGER
+  mode: NULLABLE
+  description: A number, 0-99, that samples by client_id and allows filtering data
+    for analysis. It is a pipeline-generated artifact that should match between pings.
+- name: app_version
+  type: STRING
+  mode: NULLABLE
+  description: User visible version string (e.g. "1.0.3") for the browser.
+- name: country
+  type: STRING
+  mode: NULLABLE
+  description: Name of the country in which the activity took place, as determined
+    by the IP geolocation.
+- name: locale
+  type: STRING
+  mode: NULLABLE
+  description: Set of language- and/or country-based preferences for a user interface.
+- name: app_os
+  type: STRING
+  mode: NULLABLE
+- name: addons
+  type: RECORD
+  mode: REPEATED
+  fields:
+  - name: addon
+    type: STRING
+    mode: NULLABLE
+  - name: version
+    type: STRING
+    mode: NULLABLE
diff --git a/sql/moz-fx-data-shared-prod/contextual_services_derived/adm_forecasting_v1/schema.yaml b/sql/moz-fx-data-shared-prod/contextual_services_derived/adm_forecasting_v1/schema.yaml
index 4f2edce06c9..e7b3b19be64 100644
--- a/sql/moz-fx-data-shared-prod/contextual_services_derived/adm_forecasting_v1/schema.yaml
+++ b/sql/moz-fx-data-shared-prod/contextual_services_derived/adm_forecasting_v1/schema.yaml
@@ -5,12 +5,16 @@ fields:
 - mode: NULLABLE
   name: submission_date
   type: DATE
+  description: The date when the telemetry ping is received on the server side.
 - mode: NULLABLE
   name: country
   type: STRING
+  description: Name of the country in which the activity took place, as determined by
+    the IP geolocation.
 - mode: NULLABLE
   name: device
   type: STRING
+  description: Device Type - e.g. desktop or mobile.
 - mode: NULLABLE
   name: eligible_share_country
   type: FLOAT
diff --git a/sql/moz-fx-data-shared-prod/fenix_derived/attributable_clients_v1/schema.yaml b/sql/moz-fx-data-shared-prod/fenix_derived/attributable_clients_v1/schema.yaml
new file mode 100644
index 00000000000..c35fcda844b
--- /dev/null
+++ b/sql/moz-fx-data-shared-prod/fenix_derived/attributable_clients_v1/schema.yaml
@@ -0,0 +1,53 @@
+fields:
+- name: submission_date
+  type: DATE
+  mode: NULLABLE
+  description: The date when the telemetry ping is received on the server side.
+- name: cohort_date
+  type: DATE
+  mode: NULLABLE
+- name: sample_id
+  type: INTEGER
+  mode: NULLABLE
+  description: A number, 0-99, that samples by client_id and allows filtering data
+    for analysis. It is a pipeline-generated artifact that should match between pings.
+- name: client_id
+  type: STRING
+  mode: NULLABLE
+  description: A unique identifier (UUID) for the client.
+- name: country
+  type: STRING
+  mode: NULLABLE
+  description: Name of the country in which the activity took place, as determined
+    by the IP geolocation.
+- name: adjust_network
+  type: STRING
+  mode: NULLABLE
+  description: The name of the Adjust Network that sourced the installation.
+- name: adjust_adgroup
+  type: STRING
+  mode: NULLABLE
+- name: adjust_campaign
+  type: STRING
+  mode: NULLABLE
+- name: adjust_creative
+  type: STRING
+  mode: NULLABLE
+- name: is_new_install
+  type: BOOLEAN
+  mode: NULLABLE
+- name: is_new_profile
+  type: BOOLEAN
+  mode: NULLABLE
+- name: searches
+  type: INTEGER
+  mode: NULLABLE
+- name: searches_with_ads
+  type: INTEGER
+  mode: NULLABLE
+- name: ad_clicks
+  type: INTEGER
+  mode: NULLABLE
+- name: activated
+  type: BOOLEAN
+  mode: NULLABLE
diff --git a/sql/moz-fx-data-shared-prod/fenix_derived/clients_yearly_v1/schema.yaml b/sql/moz-fx-data-shared-prod/fenix_derived/clients_yearly_v1/schema.yaml
index 0f4caa749ea..559cd1532c1 100644
--- a/sql/moz-fx-data-shared-prod/fenix_derived/clients_yearly_v1/schema.yaml
+++ b/sql/moz-fx-data-shared-prod/fenix_derived/clients_yearly_v1/schema.yaml
@@ -18,6 +18,7 @@ fields:
 - name: first_run_date
   type: DATE
   mode: NULLABLE
+  description: The date of the first run of the application.
 - name: durations
   type: INTEGER
   mode: NULLABLE
@@ -41,7 +42,8 @@ fields:
 - name: android_sdk_version
   type: STRING
   mode: NULLABLE
-  description: The optional Android specific SDK version of the software running on this hardware device.
+  description: The optional Android specific SDK version of the software running on
+    this hardware device.
 - name: locale
   type: STRING
   mode: NULLABLE
@@ -49,8 +51,8 @@ fields:
 - name: city
   type: STRING
   mode: NULLABLE
-  description: Name of the city in which the activity took place, as determined
-    by the IP geolocation.
+  description: Name of the city in which the activity took place, as determined by
+    the IP geolocation.
 - name: country
   type: STRING
   mode: NULLABLE
@@ -69,25 +71,33 @@ fields:
 - name: architecture
   type: STRING
   mode: NULLABLE
+  description: The architecture of the device, (e.g. "arm", "x86").
 - name: device_manufacturer
   type: STRING
   mode: NULLABLE
+  description: The manufacturer of the device the application is running on.
 - name: device_model
   type: STRING
   mode: NULLABLE
+  description: The model of the device the application is running on.
+    On Android, this is Build.MODEL, the user-visible marketing name, like "Pixel 2 XL".
 - name: telemetry_sdk_build
   type: STRING
   mode: NULLABLE
-  description: The version of the Glean SDK at the time the ping was collected (e.g. 25.0.0).
+  description: The version of the Glean SDK at the time the ping was collected (e.g.
+    25.0.0).
 - name: first_seen_date
   type: DATE
   mode: NULLABLE
+  description: Date when the server first received a ping from this client.
 - name: is_new_profile
   type: BOOLEAN
   mode: NULLABLE
 - name: isp
   type: STRING
   mode: NULLABLE
+  description: The name of the internet service provider associated with the client's
+    IP address.
 - name: distribution_id
   type: STRING
   mode: NULLABLE
diff --git a/sql/moz-fx-data-shared-prod/firefox_desktop_derived/baseline_active_users_aggregates_v2/metadata.yaml b/sql/moz-fx-data-shared-prod/firefox_desktop_derived/baseline_active_users_aggregates_v2/metadata.yaml
index 40f695482d5..943e02e0056 100644
--- a/sql/moz-fx-data-shared-prod/firefox_desktop_derived/baseline_active_users_aggregates_v2/metadata.yaml
+++ b/sql/moz-fx-data-shared-prod/firefox_desktop_derived/baseline_active_users_aggregates_v2/metadata.yaml
@@ -25,4 +25,4 @@ bigquery:
     - channel
     - country
 references: {}
-require_column_descriptions: false
+require_column_descriptions: true
diff --git a/sql/moz-fx-data-shared-prod/firefox_desktop_derived/review_checker_clients_v1/schema.yaml b/sql/moz-fx-data-shared-prod/firefox_desktop_derived/review_checker_clients_v1/schema.yaml
index 3107c9ddd0d..81b2ab5fa2a 100644
--- a/sql/moz-fx-data-shared-prod/firefox_desktop_derived/review_checker_clients_v1/schema.yaml
+++ b/sql/moz-fx-data-shared-prod/firefox_desktop_derived/review_checker_clients_v1/schema.yaml
@@ -15,6 +15,7 @@ fields:
 - name: legacy_client_id
   type: STRING
   mode: NULLABLE
+  description: A unique identifier (UUID) for the client, based on legacy telemetry data.
 - name: client_id
   type: STRING
   mode: NULLABLE
diff --git a/sql/moz-fx-data-shared-prod/mozilla_org_derived/blogs_goals_v1/schema.yaml b/sql/moz-fx-data-shared-prod/mozilla_org_derived/blogs_goals_v1/schema.yaml
index 51210ead2ef..9c1b2f03515 100644
--- a/sql/moz-fx-data-shared-prod/mozilla_org_derived/blogs_goals_v1/schema.yaml
+++ b/sql/moz-fx-data-shared-prod/mozilla_org_derived/blogs_goals_v1/schema.yaml
@@ -2,15 +2,20 @@ fields:
 - name: date
   type: DATE
   mode: NULLABLE
+  description: Date of the session
 - name: visit_identifier
   type: STRING
   mode: NULLABLE
+  description: The unique identifier for a visit, a concatenation of visitor ID and visit ID.
 - name: downloads
   type: INTEGER
   mode: NULLABLE
+  description: The number of downloads for this session.
 - name: social_share
   type: INTEGER
   mode: NULLABLE
+  description: The number of social shares for this session.
 - name: newsletter_subscription
   type: INTEGER
   mode: NULLABLE
+  description: The number of newsletter subscriptions for this session.
diff --git a/sql/moz-fx-data-shared-prod/mozilla_org_derived/www_site_hits_v1/schema.yaml b/sql/moz-fx-data-shared-prod/mozilla_org_derived/www_site_hits_v1/schema.yaml
index d814d4bb1f2..b104234228b 100644
--- a/sql/moz-fx-data-shared-prod/mozilla_org_derived/www_site_hits_v1/schema.yaml
+++ b/sql/moz-fx-data-shared-prod/mozilla_org_derived/www_site_hits_v1/schema.yaml
@@ -2,111 +2,148 @@ fields:
 - name: date
   type: DATE
   mode: NULLABLE
+  description: Date
 - name: visit_identifier
   type: STRING
   mode: NULLABLE
+  description: Visit Identifier - Concatenation of the visitor ID and visit ID, represents a session.
 - name: full_visitor_id
   type: STRING
   mode: NULLABLE
+  description: Visitor ID - a unique identifier for a visitor to the website.
 - name: visit_start_time
   type: INTEGER
   mode: NULLABLE
+  description: Visit Start Time
 - name: page_path
   type: STRING
   mode: NULLABLE
+  description: Page Path
 - name: page_path_level1
   type: STRING
   mode: NULLABLE
+  description: Page Path Level 1
 - name: hit_type
   type: STRING
   mode: NULLABLE
+  description: Hit Type
 - name: is_exit
   type: BOOLEAN
   mode: NULLABLE
+  description: Is Exit Indicator
 - name: is_entrance
   type: BOOLEAN
   mode: NULLABLE
+  description: Is Entrance Indicator
 - name: hit_number
   type: INTEGER
   mode: NULLABLE
+  description: Hit Number - A number indicating the order of hits within a session.
 - name: event_category
   type: STRING
   mode: NULLABLE
+  description: Event Category
 - name: event_label
   type: STRING
   mode: NULLABLE
+  description: Event Label
 - name: event_action
   type: STRING
   mode: NULLABLE
+  description: Event Action
 - name: device_category
   type: STRING
   mode: NULLABLE
+  description: Device Category
 - name: operating_system
   type: STRING
   mode: NULLABLE
+  description: Operating System
 - name: language
   type: STRING
   mode: NULLABLE
+  description: Language
 - name: browser
   type: STRING
   mode: NULLABLE
+  description: Browser
 - name: browser_version
   type: STRING
   mode: NULLABLE
+  description: Browser Version
 - name: country
   type: STRING
   mode: NULLABLE
+  description: Country
 - name: source
   type: STRING
   mode: NULLABLE
+  description: Source
 - name: medium
   type: STRING
   mode: NULLABLE
+  description: Medium
 - name: campaign
   type: STRING
   mode: NULLABLE
+  description: Campaign
 - name: ad_content
   type: STRING
   mode: NULLABLE
+  description: Ad Content
 - name: visits
   type: INTEGER
   mode: NULLABLE
+  description: The number of visits.
 - name: bounces
   type: INTEGER
   mode: NULLABLE
+  description: The number of bounces.
 - name: hit_time
   type: FLOAT
   mode: NULLABLE
+  description: Hit Time
 - name: first_interaction
   type: INTEGER
   mode: NULLABLE
+  description: First Interaction
 - name: last_interaction
   type: FLOAT
   mode: NULLABLE
+  description: Last Interaction
 - name: entrances
   type: INTEGER
   mode: NULLABLE
+  description: Entrances
 - name: exits
   type: INTEGER
   mode: NULLABLE
+  description: Exits
 - name: event_id
   type: STRING
   mode: NULLABLE
+  description: Event ID
 - name: page_level_1
   type: STRING
   mode: NULLABLE
+  description: Page Level 1
 - name: page_level_2
   type: STRING
   mode: NULLABLE
+  description: Page Level 2
 - name: page_level_3
   type: STRING
   mode: NULLABLE
+  description: Page Level 3
 - name: page_level_4
   type: STRING
   mode: NULLABLE
+  description: Page Level 4
 - name: page_level_5
   type: STRING
   mode: NULLABLE
+  description: Page Level 5
 - name: page_name
   type: STRING
   mode: NULLABLE
+  description: Page Name
diff --git a/sql/moz-fx-data-shared-prod/regrets_reporter_derived/regrets_reporter_summary_v1/schema.yaml b/sql/moz-fx-data-shared-prod/regrets_reporter_derived/regrets_reporter_summary_v1/schema.yaml
new file mode 100644
index 00000000000..ac23d698b1b
--- /dev/null
+++ b/sql/moz-fx-data-shared-prod/regrets_reporter_derived/regrets_reporter_summary_v1/schema.yaml
@@ -0,0 +1,33 @@
+fields:
+- mode: NULLABLE
+  name: dau
+  type: INTEGER
+  description: The number of unique installation IDs using the add-on on this date.
+- name: wau
+  type: INTEGER
+  mode: NULLABLE
+  description: The number of unique installation IDs using the add-on on this date.
+- name: new_users
+  type: INTEGER
+  mode: NULLABLE
+- name: date
+  type: DATE
+  mode: NULLABLE
+  description: Date when the ping is received on the server side.
+- name: experiment_arm
+  type: STRING
+  mode: NULLABLE
+- name: ui_arm
+  type: STRING
+  mode: NULLABLE
+- name: country
+  type: STRING
+  mode: NULLABLE
+  description: Name of the country in which the activity took place, as determined
+    by the IP geolocation.
+- name: browser
+  type: STRING
+  mode: NULLABLE
+- name: activities
+  type: INTEGER
+  mode: NULLABLE
diff --git a/sql_generators/glean_usage/templates/event_monitoring_aggregates_v1.schema.yaml b/sql_generators/glean_usage/templates/event_monitoring_aggregates_v1.schema.yaml
index caf53393e51..f4ed677b76b 100644
--- a/sql_generators/glean_usage/templates/event_monitoring_aggregates_v1.schema.yaml
+++ b/sql_generators/glean_usage/templates/event_monitoring_aggregates_v1.schema.yaml
@@ -21,9 +21,12 @@ fields:
 - name: country
   type: STRING
   mode: NULLABLE
+  description: Name of the country in which the activity took place, as determined by
+    the IP geolocation.
 - name: normalized_app_name
   type: STRING
   mode: NULLABLE
+  description: The normalized name of the application.
 - name: channel
   type: STRING
   mode: NULLABLE
@@ -40,3 +43,4 @@ fields:
 - name: total_events
   type: INTEGER
   mode: NULLABLE
+  description: Total number of events.
diff --git a/sql_generators/urlbar_events/templates/schema.yaml b/sql_generators/urlbar_events/templates/schema.yaml
index 5856f8aa5e0..14242db8684 100644
--- a/sql_generators/urlbar_events/templates/schema.yaml
+++ b/sql_generators/urlbar_events/templates/schema.yaml
@@ -11,6 +11,7 @@ fields:
   - name: legacy_telemetry_client_id
     type: STRING
     mode: NULLABLE
+    description: A unique identifier (UUID) for the client based on legacy telemetry data.
   - name: sample_id
     type: INTEGER
     mode: NULLABLE