Fast.io

Events & Activity

event

Read-only

Fastio event log and activity (read): search audit events, event details, list and long-poll workspace/share activity, the per-member workspace Dashboard feed (dashboard-list), and the org-wide storage change feed (changes: one cursor for every workspace and share in an org). Writes and the billed AI summary are on event_manage. action='describe' gives the full action/param reference.

Input Schema

TableJSON Schema

Name	Required	Description
`wait`	No	Max seconds server holds connection (1-95, default 95).
`event`	No	Exact event name. See describe action for catalog.
`limit`	No	Max results (1-250; default 100, changes: 250).
`action`	Yes	Operation. Use 'describe' for full action reference.
`cursor`	No	changes: the opaque feed cursor from the previous response — send it back unchanged; omit to bootstrap. activity-list: last activity timestamp for incremental polling.
`detail`	No	terse\|standard\|full. Defaults: terse for search/activity-list/activity-poll, standard for summarize, full for details. Only search and details honor it.
`offset`	No	Pagination offset.
`org_id`	No	Organization profile ID (19-digit). Filter-style scope filter; the org to read for changes.
`user_id`	No	Filters the event's stored subject column, which the platform derives instead of taking it from the emitter, so it can name an arbitrary related user rather than the person the event concerns. The actor is calling_user_id. The search note covers both.
`category`	No	Event category; valid values are in describe. `node` is the AI/RAG pipeline, not file operations; file activity is under both `workspace` and `share`. Cloud import is category="import" (subcategory="cloud_import" for graft traffic only); `cloudsync` is an activity field on a different taxonomy and matches nothing here.
`event_id`	No	Alphanumeric event opaque ID.
`share_id`	No	Filter by share profile ID.
`entity_id`	No	activity-poll: the workspace, share, or File Share ID to long-poll (a File Share's file_share_* feed reaches WORKSPACE MEMBERS only; recipients get no feed).
`object_id`	No	Filter by related object opaque ID (file, folder, etc.).
`context_id`	No	Alias for profile_id (either name works)
`profile_id`	No	activity-list: the workspace, share, or File Share ID (pair with profile_type).
`visibility`	No	Filter by event visibility level (external_audit_log \| external). Default returns both, excludes internal.
`created_max`	No	ISO 8601 datetime — events on or before.
`created_min`	No	ISO 8601 datetime — events on or after.
`subcategory`	No	Event subcategory. See describe action for valid values.
`acknowledged`	No	Filter by acknowledgment status.
`context_type`	No	Alias for profile_type (either name works).
`lastactivity`	No	Timestamp from prior poll's response. Omit on first call.
`profile_type`	No	Profile type: "workspace", "share", or "fileshare". `fileshare` is valid for activity-list (long-poll a File Share's feed — workspace members only; recipients get no feed).
`workspace_id`	No	Filter-style scope filter by workspace ID. dashboard-*: the workspace.
`calling_user_id`	No	Filter by the user who triggered the event.
`parent_event_id`	No	Filter by parent event ID for serial/batch events. SCOPE-EXCLUSIVE: cannot combine with any filter other than acknowledged, limit, offset.

Schema Changelog

Changes observed during successful MCP inspections.

Changed11 schema fields changedOct 3, 2026

changedInput schema / properties / action / enum

Previous value: -[
-  "describe",
-  "search",
-  "summarize",
-  "details",
-  "acknowledge",
-  "activity-list",
-  "activity-poll",
-  "dashboard-list",
-  "dashboard-dismiss",
-  "dashboard-undismiss",
-  "changes"
-]New value: +[
+  "describe",
+  "search",
+  "details",
+  "activity-list",
+  "activity-poll",
+  "dashboard-list",
+  "changes"
+]

removedInput schema / properties / card_key

Removed value: -{
-  "description": "Dashboard card identity \"<lane>:<id>\" (e.g. \"mention:123\"). From a dashboard-list card. Required for dashboard-dismiss/dashboard-undismiss; URL-encoded into the path by the server.",
-  "minLength": 1,
-  "type": "string"
-}

changedInput schema / properties / category / description

Previous value: -"Event category. See describe action for valid values. `node` IS THE AI/RAG PIPELINE, NOT FILE OPERATIONS — file activity lives under `workspace` AND `share`, so query both. CLOUD IMPORT IS NOT `cloudsync` HERE — that is an ACTIVITY field on a different taxonomy and returns nothing rather than erroring. Use category=\"import\", narrowed with subcategory=\"cloud_import\" for graft traffic only."New value: +"Event category; valid values are in describe. `node` is the AI/RAG pipeline, not file operations; file activity is under both `workspace` and `share`. Cloud import is category=\"import\" (subcategory=\"cloud_import\" for graft traffic only); `cloudsync` is an activity field on a different taxonomy and matches nothing here."

changedInput schema / properties / detail / description

Previous value: -"Per-record verbosity for search/summarize/details/activity-list/activity-poll. Defaults: terse for search/activity-list/activity-poll (compact rows), standard for summarize, full for details (drill-down). See action='describe' for per-level field lists."New value: +"terse|standard|full. Defaults: terse for search/activity-list/activity-poll, standard for summarize, full for details. Only search and details honor it."

changedInput schema / properties / entity_id / description

Previous value: -"Opaque ID of a specific object (file, comment, etc.). Pair with entity_type to disambiguate. 19-digit workspace, share, or File Share ID to monitor (activity-poll long-polls GET /activity/poll/{id}/ — for a File Share id this surfaces its file_share_* feed to WORKSPACE MEMBERS only; recipients get no feed)."New value: +"activity-poll: the workspace, share, or File Share ID to long-poll (a File Share's file_share_* feed reaches WORKSPACE MEMBERS only; recipients get no feed)."

changedInput schema / properties / org_id / description

Previous value: -"Organization profile ID (19-digit). Filter for search/summarize; the org to read for changes."New value: +"Organization profile ID (19-digit). Filter-style scope filter; the org to read for changes."

changedInput schema / properties / profile_id / description

Previous value: -"Polymorphic context ID. Pair with profile_type=workspace|share|org|fileshare. Use workspace_id instead when only workspaces are valid. 19-digit profile ID (workspace, share, or File Share)."New value: +"activity-list: the workspace, share, or File Share ID (pair with profile_type)."

removedInput schema / properties / snooze_until

Removed value: -{
-  "description": "Optional for dashboard-dismiss: a future \"Y-m-d H:i:s UTC\" timestamp to snooze the card until (it reappears after). Omit for a permanent dismiss.",
-  "type": "string"
-}

removedInput schema / properties / user_context

Removed value: -{
-  "description": "Focus guidance for AI summary, e.g. \"Focus on uploads\".",
-  "maxLength": 64,
-  "type": "string"
-}

changedInput schema / properties / user_id / description

Previous value: -"Filter by the event's stored subject column. DO NOT read it as \"the person this event is about\": the platform DERIVES that column instead of taking it from the emitter, so it can name an arbitrary related user rather than the subject. For \"what did this person do\", use calling_user_id (the actor) and read its note. See the search note before relying on either."New value: +"Filters the event's stored subject column, which the platform derives instead of taking it from the emitter, so it can name an arbitrary related user rather than the person the event concerns. The actor is calling_user_id. The search note covers both."

changedInput schema / properties / workspace_id / description

Previous value: -"Workspace opaque ID. Use this when only workspaces are valid (not shares or other contexts). For polymorphic contexts use profile_id. Filter by workspace profile ID."New value: +"Filter-style scope filter by workspace ID. dashboard-*: the workspace."

Changed4 schema fields changedSep 26, 2026

changedInput schema / properties / action / enum

Previous value: -[
-  "describe",
-  "search",
-  "summarize",
-  "details",
-  "acknowledge",
-  "activity-list",
-  "activity-poll",
-  "dashboard-list",
-  "dashboard-dismiss",
-  "dashboard-undismiss"
-]New value: +[
+  "describe",
+  "search",
+  "summarize",
+  "details",
+  "acknowledge",
+  "activity-list",
+  "activity-poll",
+  "dashboard-list",
+  "dashboard-dismiss",
+  "dashboard-undismiss",
+  "changes"
+]

changedInput schema / properties / cursor / description

Previous value: -"Last activity timestamp for incremental polling."New value: +"changes: the opaque feed cursor from the previous response — send it back unchanged; omit to bootstrap. activity-list: last activity timestamp for incremental polling."

changedInput schema / properties / limit / description

Previous value: -"Max results (1-250, default 100)."New value: +"Max results (1-250; default 100, changes: 250)."

changedInput schema / properties / org_id / description

Previous value: -"Filter by organization profile ID."New value: +"Organization profile ID (19-digit). Filter for search/summarize; the org to read for changes."

Changed2 schema fields changedAug 30, 2026

changedInput schema / properties / category / description

Previous value: -"Event category. See describe action for valid values."New value: +"Event category. See describe action for valid values. `node` IS THE AI/RAG PIPELINE, NOT FILE OPERATIONS — file activity lives under `workspace` AND `share`, so query both. CLOUD IMPORT IS NOT `cloudsync` HERE — that is an ACTIVITY field on a different taxonomy and returns nothing rather than erroring. Use category=\"import\", narrowed with subcategory=\"cloud_import\" for graft traffic only."

changedInput schema / properties / user_id / description

Previous value: -"Filter by user profile ID."New value: +"Filter by the event's stored subject column. DO NOT read it as \"the person this event is about\": the platform DERIVES that column instead of taking it from the emitter, so it can name an arbitrary related user rather than the subject. For \"what did this person do\", use calling_user_id (the actor) and read its note. See the search note before relying on either."

Changed6 schema fields changedAug 6, 2026

changedInput schema / properties / card_key / description

Previous value: -"Dashboard card identity \"<lane>:<id>\" (e.g. \"mention:123\"). From a dashboard-list card. Required for dashboard-dismiss/dashboard-undismiss; URL-encoded into…"New value: +"Dashboard card identity \"<lane>:<id>\" (e.g. \"mention:123\"). From a dashboard-list card. Required for dashboard-dismiss/dashboard-undismiss; URL-encoded into the path by the server."

changedInput schema / properties / detail / description

Previous value: -"Per-record verbosity for search/summarize/details/activity-list/activity-poll. Defaults: terse for search/activity-list/activity-poll (compact rows), standard…"New value: +"Per-record verbosity for search/summarize/details/activity-list/activity-poll. Defaults: terse for search/activity-list/activity-poll (compact rows), standard for summarize, full for details (drill-down). See action='describe' for per-level field lists."

changedInput schema / properties / entity_id / description

Previous value: -"Opaque ID of a specific object (file, comment, etc.). Pair with entity_type to disambiguate. 19-digit workspace, share, or File Share ID to monitor…"New value: +"Opaque ID of a specific object (file, comment, etc.). Pair with entity_type to disambiguate. 19-digit workspace, share, or File Share ID to monitor (activity-poll long-polls GET /activity/poll/{id}/ — for a File Share id this surfaces its file_share_* feed to WORKSPACE MEMBERS only; recipients get no feed)."

changedInput schema / properties / profile_id / description

Previous value: -"Polymorphic context ID. Pair with profile_type=workspace|share|org|fileshare. Use workspace_id instead when only workspaces are valid. 19-digit profile ID…"New value: +"Polymorphic context ID. Pair with profile_type=workspace|share|org|fileshare. Use workspace_id instead when only workspaces are valid. 19-digit profile ID (workspace, share, or File Share)."

changedInput schema / properties / profile_type / description

Previous value: -"Profile type: \"workspace\", \"share\", or \"fileshare\". `fileshare` is valid for activity-list (long-poll a File Share's feed — workspace members only; recipients…"New value: +"Profile type: \"workspace\", \"share\", or \"fileshare\". `fileshare` is valid for activity-list (long-poll a File Share's feed — workspace members only; recipients get no feed)."

changedInput schema / properties / workspace_id / description

Previous value: -"Workspace opaque ID. Use this when only workspaces are valid (not shares or other contexts). For polymorphic contexts use profile_id. Filter by workspace…"New value: +"Workspace opaque ID. Use this when only workspaces are valid (not shares or other contexts). For polymorphic contexts use profile_id. Filter by workspace profile ID."

Changed3 schema fields changedJul 21, 2026

changedInput schema / properties / action / enum

Previous value: -[
-  "describe",
-  "search",
-  "summarize",
-  "details",
-  "acknowledge",
-  "activity-list",
-  "activity-poll",
-  "dashboard-list",
-  "dashboard-dismiss",
-  "dashboard-undismiss",
-  "dashboard-sign-link"
-]New value: +[
+  "describe",
+  "search",
+  "summarize",
+  "details",
+  "acknowledge",
+  "activity-list",
+  "activity-poll",
+  "dashboard-list",
+  "dashboard-dismiss",
+  "dashboard-undismiss"
+]

changedInput schema / properties / card_key / description

Previous value: -"Dashboard card identity \"<lane>:<id>\" (e.g. \"obligation:123\"). From a dashboard-list card. Required for dashboard-dismiss/dashboard-undismiss; URL-encoded into…"New value: +"Dashboard card identity \"<lane>:<id>\" (e.g. \"mention:123\"). From a dashboard-list card. Required for dashboard-dismiss/dashboard-undismiss; URL-encoded into…"

removedInput schema / properties / envelope_id

Removed value: -{
-  "description": "Signature envelope id (a signature card's target.id). Required for dashboard-sign-link.",
-  "minLength": 1,
-  "type": "string"
-}

Changed17 schema fields changedJun 26, 2026

addedInput schema / properties / acknowledged

Added value: +{
+  "description": "Filter by acknowledgment status.",
+  "enum": [
+    "true",
+    "false"
+  ],
+  "type": "string"
+}

changedInput schema / properties / action / enum

Previous value: -[
-  "describe",
-  "search",
-  "summarize",
-  "details",
-  "activity-list",
-  "activity-poll"
-]New value: +[
+  "describe",
+  "search",
+  "summarize",
+  "details",
+  "acknowledge",
+  "activity-list",
+  "activity-poll",
+  "dashboard-list",
+  "dashboard-dismiss",
+  "dashboard-undismiss",
+  "dashboard-sign-link"
+]

addedInput schema / properties / calling_user_id

Added value: +{
+  "description": "Filter by the user who triggered the event.",
+  "type": "string"
+}

addedInput schema / properties / card_key

Added value: +{
+  "description": "Dashboard card identity \"<lane>:<id>\" (e.g. \"obligation:123\"). From a dashboard-list card. Required for dashboard-dismiss/dashboard-undismiss; URL-encoded into…",
+  "minLength": 1,
+  "type": "string"
+}

changedInput schema / properties / context_type / description

Previous value: -"Alias for profile_type (either name works)"New value: +"Alias for profile_type (either name works)."

changedInput schema / properties / context_type / enum

Previous value: -[
-  "workspace",
-  "share"
-]New value: +[
+  "workspace",
+  "share",
+  "fileshare"
+]

changedInput schema / properties / detail / description

Previous value: -"Per-record verbosity for search/summarize/details/activity-list/activity-poll. Defaults: terse for search/activity-list/activity-poll (compact rows), standard for summarize, full for details (drill-down). See action='describe' for per-level field lists."New value: +"Per-record verbosity for search/summarize/details/activity-list/activity-poll. Defaults: terse for search/activity-list/activity-poll (compact rows), standard…"

changedInput schema / properties / entity_id / description

Previous value: -"Opaque ID of a specific object (file, comment, worklog entry, etc.). Pair with entity_type to disambiguate. 19-digit workspace or share ID to monitor."New value: +"Opaque ID of a specific object (file, comment, etc.). Pair with entity_type to disambiguate. 19-digit workspace, share, or File Share ID to monitor…"

addedInput schema / properties / envelope_id

Added value: +{
+  "description": "Signature envelope id (a signature card's target.id). Required for dashboard-sign-link.",
+  "minLength": 1,
+  "type": "string"
+}

addedInput schema / properties / object_id

Added value: +{
+  "description": "Filter by related object opaque ID (file, folder, etc.).",
+  "type": "string"
+}

addedInput schema / properties / parent_event_id

Added value: +{
+  "description": "Filter by parent event ID for serial/batch events. SCOPE-EXCLUSIVE: cannot combine with any filter other than acknowledged, limit, offset.",
+  "type": "string"
+}

changedInput schema / properties / profile_id / description

Previous value: -"Polymorphic context ID. Pair with profile_type=workspace|share|org. Use workspace_id instead when only workspaces are valid. 19-digit profile ID (workspace or share)."New value: +"Polymorphic context ID. Pair with profile_type=workspace|share|org|fileshare. Use workspace_id instead when only workspaces are valid. 19-digit profile ID…"

changedInput schema / properties / profile_type / description

Previous value: -"Profile type: \"workspace\" or \"share\"."New value: +"Profile type: \"workspace\", \"share\", or \"fileshare\". `fileshare` is valid for activity-list (long-poll a File Share's feed — workspace members only; recipients…"

changedInput schema / properties / profile_type / enum

Previous value: -[
-  "workspace",
-  "share"
-]New value: +[
+  "workspace",
+  "share",
+  "fileshare"
+]

addedInput schema / properties / snooze_until

Added value: +{
+  "description": "Optional for dashboard-dismiss: a future \"Y-m-d H:i:s UTC\" timestamp to snooze the card until (it reappears after). Omit for a permanent dismiss.",
+  "type": "string"
+}

addedInput schema / properties / visibility

Added value: +{
+  "description": "Filter by event visibility level (external_audit_log | external). Default returns both, excludes internal.",
+  "enum": [
+    "external_audit_log",
+    "external"
+  ],
+  "type": "string"
+}

changedInput schema / properties / workspace_id / description

Previous value: -"Workspace opaque ID. Use this when only workspaces are valid (not shares or other contexts). For polymorphic contexts use profile_id. Filter by workspace profile ID."New value: +"Workspace opaque ID. Use this when only workspaces are valid (not shares or other contexts). For polymorphic contexts use profile_id. Filter by workspace…"

Changed16 schema fields changedMay 22, 2026

removedInput schema / properties / created-max

Removed value: -{
-  "description": "ISO 8601 datetime — events on or before.",
-  "type": "string"
-}

removedInput schema / properties / created-min

Removed value: -{
-  "description": "ISO 8601 datetime — events on or after.",
-  "type": "string"
-}

addedInput schema / properties / created_max

Added value: +{
+  "description": "ISO 8601 datetime — events on or before.",
+  "type": "string"
+}

addedInput schema / properties / created_min

Added value: +{
+  "description": "ISO 8601 datetime — events on or after.",
+  "type": "string"
+}

removedInput schema / properties / limit / anyOf

Removed value: -[
-  {
-    "maximum": 250,
-    "minimum": 1,
-    "type": "integer"
-  },
-  {
-    "pattern": "^-?\\d+$",
-    "type": "string"
-  }
-]

addedInput schema / properties / limit / maximum
```
Added value: +250
```
addedInput schema / properties / limit / minimum
```
Added value: +1
```
addedInput schema / properties / limit / type
```
Added value: +"integer"
```

removedInput schema / properties / offset / anyOf

Removed value: -[
-  {
-    "maximum": 9007199254740991,
-    "minimum": 0,
-    "type": "integer"
-  },
-  {
-    "pattern": "^-?\\d+$",
-    "type": "string"
-  }
-]

addedInput schema / properties / offset / maximum
```
Added value: +9007199254740991
```
addedInput schema / properties / offset / minimum
```
Added value: +0
```
addedInput schema / properties / offset / type
```
Added value: +"integer"
```

removedInput schema / properties / wait / anyOf

Removed value: -[
-  {
-    "maximum": 95,
-    "minimum": 1,
-    "type": "integer"
-  },
-  {
-    "pattern": "^-?\\d+$",
-    "type": "string"
-  }
-]

addedInput schema / properties / wait / maximum
```
Added value: +95
```
addedInput schema / properties / wait / minimum
```
Added value: +1
```
addedInput schema / properties / wait / type
```
Added value: +"integer"
```

Changed34 schema fields changedMay 5, 2026

changedInput schema / properties / action / description

Previous value: -"Operation to perform"New value: +"Operation. Use 'describe' for full action reference."

changedInput schema / properties / action / enum

Previous value: -[
-  "search",
-  "summarize",
-  "details",
-  "activity-list",
-  "activity-poll"
-]New value: +[
+  "describe",
+  "search",
+  "summarize",
+  "details",
+  "activity-list",
+  "activity-poll"
+]

changedInput schema / properties / category / description

Previous value: -"Filter by event category (used by: search, summarize). Valid values: user, org, workspace, share, node, ai, invitation, billing, domain, apps, metadata"New value: +"Event category. See describe action for valid values."

changedInput schema / properties / created-max / description

Previous value: -"ISO 8601 datetime — events created on or before (used by: search, summarize)"New value: +"ISO 8601 datetime — events on or before."

changedInput schema / properties / created-min / description

Previous value: -"ISO 8601 datetime — events created on or after (used by: search, summarize)"New value: +"ISO 8601 datetime — events on or after."

changedInput schema / properties / cursor / description

Previous value: -"Last activity timestamp for incremental polling (used by: activity-list)"New value: +"Last activity timestamp for incremental polling."

changedInput schema / properties / detail / description

Previous value: -"Detail level: terse|standard|full (default varies per action: standard for search/activity-list, terse for activity-poll) (used by: search, activity-list, activity-poll)"New value: +"Per-record verbosity for search/summarize/details/activity-list/activity-poll. Defaults: terse for search/activity-list/activity-poll (compact rows), standard for summarize, full for details (drill-down). See action='describe' for per-level field lists."

changedInput schema / properties / entity_id / description

Previous value: -"19-digit workspace or share ID to monitor for changes (required for: activity-poll)"New value: +"Opaque ID of a specific object (file, comment, worklog entry, etc.). Pair with entity_type to disambiguate. 19-digit workspace or share ID to monitor."

changedInput schema / properties / event / description

Previous value: -"Filter by exact event name (used by: search, summarize). Common values — File ops (workspace): workspace_storage_file_added, workspace_storage_file_deleted, workspace_storage_file_moved, workspace_storage_file_copied, workspace_storage_file_updated, workspace_storage_file_restored, workspace_storage_folder_created, workspace_storage_folder_deleted, workspace_storage_folder_moved, workspace_storage_download_token_created, workspace_storage_zip_downloaded, workspace_storage_file_version_restored, workspace_storage_link_added. File ops (share): share_storage_file_added, share_storage_file_deleted, share_storage_file_moved, share_storage_file_copied, share_storage_file_updated, share_storage_file_restored, share_storage_folder_created, share_storage_folder_deleted, share_storage_folder_moved, share_storage_download_token_created, share_storage_zip_downloaded. Comments: comment_created, comment_updated, comment_deleted, comment_mentioned, comment_replied, comment_reaction. Membership: added_member_to_org, added_member_to_workspace, added_member_to_share, removed_member_from_org, removed_member_from_workspace, removed_member_from_share, membership_updated. Workspace lifecycle: workspace_created, workspace_updated, workspace_deleted, workspace_archived, workspace_unarchived. Share lifecycle: share_created, share_updated, share_deleted, share_archived, share_unarchived, share_imported_to_workspace. AI: ai_chat_created, ai_chat_new_message, ai_chat_updated, ai_chat_deleted, ai_chat_published, node_ai_summary_created, workspace_ai_share_created. Metadata: metadata_kv_update, metadata_kv_delete, metadata_kv_extract, metadata_template_update, metadata_template_delete, metadata_template_settings_update, metadata_view_update, metadata_view_delete, metadata_template_select. Quick shares: workspace_quickshare_created, workspace_quickshare_updated, workspace_quickshare_deleted, workspace_quickshare_file_downloaded, workspace_quickshare_file_previewed. Invitations: invitation_email_sent, invitation_accepted, invitation_declined. User: user_created, user_updated, user_deleted, user_email_reset, user_asset_updated. Org: org_created, org_updated, org_closed, org_transfer_token_created, org_transfer_completed. Billing: subscription_created, subscription_cancelled, billing_free_trial_ended."New value: +"Exact event name. See describe action for catalog."

changedInput schema / properties / event_id / description

Previous value: -"Alphanumeric opaque ID of the event (required for: details)"New value: +"Alphanumeric event opaque ID."

changedInput schema / properties / lastactivity / description

Previous value: -"Timestamp from a prior poll's response — look for the top-level lastactivity field in the previous markdown body. Omit on first call. (used by: activity-poll)"New value: +"Timestamp from prior poll's response. Omit on first call."

addedInput schema / properties / limit / anyOf

Added value: +[
+  {
+    "maximum": 250,
+    "minimum": 1,
+    "type": "integer"
+  },
+  {
+    "pattern": "^-?\\d+$",
+    "type": "string"
+  }
+]

changedInput schema / properties / limit / description

Previous value: -"Max results to return (1-250, default 100) (used by: search, summarize)"New value: +"Max results (1-250, default 100)."

removedInput schema / properties / limit / maximum
```
Removed value: -250
```
removedInput schema / properties / limit / minimum
```
Removed value: -1
```
removedInput schema / properties / limit / type
```
Removed value: -"integer"
```

addedInput schema / properties / offset / anyOf

Added value: +[
+  {
+    "maximum": 9007199254740991,
+    "minimum": 0,
+    "type": "integer"
+  },
+  {
+    "pattern": "^-?\\d+$",
+    "type": "string"
+  }
+]

changedInput schema / properties / offset / description

Previous value: -"Number of results to skip for pagination (used by: search, summarize)"New value: +"Pagination offset."

removedInput schema / properties / offset / maximum
```
Removed value: -9007199254740991
```
removedInput schema / properties / offset / minimum
```
Removed value: -0
```
removedInput schema / properties / offset / type
```
Removed value: -"integer"
```

changedInput schema / properties / org_id / description

Previous value: -"Filter by organization profile ID (19 digits) (used by: search, summarize)"New value: +"Filter by organization profile ID."

changedInput schema / properties / profile_id / description

Previous value: -"19-digit profile (workspace or share) ID (also accepted as context_id) (required for: activity-list)"New value: +"Polymorphic context ID. Pair with profile_type=workspace|share|org. Use workspace_id instead when only workspaces are valid. 19-digit profile ID (workspace or share)."

changedInput schema / properties / profile_type / description

Previous value: -"Profile type: \"workspace\" or \"share\" (also accepted as context_type) (optional context for: activity-list)"New value: +"Profile type: \"workspace\" or \"share\"."

changedInput schema / properties / share_id / description

Previous value: -"Filter by share profile ID (19 digits) (used by: search, summarize)"New value: +"Filter by share profile ID."

changedInput schema / properties / subcategory / description

Previous value: -"Filter by event subcategory (used by: search, summarize). Valid values: storage, comments, members, lifecycle, settings, security, authentication, ai, invitations, billing, assets, upload, transfer, import_export, quickshare, metadata"New value: +"Event subcategory. See describe action for valid values."

changedInput schema / properties / user_context / description

Previous value: -"Focus guidance for the AI summary, e.g. \"Focus on uploads\" (used by: summarize)"New value: +"Focus guidance for AI summary, e.g. \"Focus on uploads\"."

changedInput schema / properties / user_id / description

Previous value: -"Filter by user profile ID (19 digits) (used by: search, summarize)"New value: +"Filter by user profile ID."

addedInput schema / properties / wait / anyOf

Added value: +[
+  {
+    "maximum": 95,
+    "minimum": 1,
+    "type": "integer"
+  },
+  {
+    "pattern": "^-?\\d+$",
+    "type": "string"
+  }
+]

changedInput schema / properties / wait / description

Previous value: -"Maximum seconds the server will hold the connection (1-95, default 95) (used by: activity-poll)"New value: +"Max seconds server holds connection (1-95, default 95)."

removedInput schema / properties / wait / maximum
```
Removed value: -95
```
removedInput schema / properties / wait / minimum
```
Removed value: -1
```
removedInput schema / properties / wait / type
```
Removed value: -"integer"
```

changedInput schema / properties / workspace_id / description

Previous value: -"Filter by workspace profile ID (19 digits) (used by: search, summarize)"New value: +"Workspace opaque ID. Use this when only workspaces are valid (not shares or other contexts). For polymorphic contexts use profile_id. Filter by workspace profile ID."

First observedApr 15, 2026

TDQS

A3.9/5.0

Behavior3/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations already declare readOnlyHint=true, destructiveHint=false and openWorldHint=true, so the safety profile is covered. The description adds useful scope context — the changes feed being 'one cursor for every workspace and share in an org' and the per-member dashboard feed — but says nothing about auth requirements, rate limits, or polling cost beyond what the schema already states.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

A single dense paragraph that front-loads the read-only scope and the operation inventory before the hand-off to `event_manage`. Every clause carries information, though the sentence is long and could be broken for scanability.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a 27-parameter, action-dispatch tool with no output schema and full schema coverage, the description covers scope, the read/write boundary, and defers detailed action semantics to the describe action. That is sufficient for correct invocation; the omission of return-shape or pagination expectations is minor given the schema.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 100%, so all 27 parameters (including the 6 enums and cursor/long-poll semantics) are already documented in the schema. The description's mentions (cursor over an org, dashboard-list scoping) add framing but no syntax or format detail beyond the schema. Baseline 3 applies.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description opens with an explicit verb+resource+mode ('Fastio event log and activity (read)') and then enumerates the concrete read surfaces: audit event search, event details, activity list/long-poll, dashboard-list, and the org-wide changes feed. It names the sibling it is not ('Writes and the billed AI summary are on event_manage'), so an agent can route between `event` and `event_manage` without opening either schema.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

It gives explicit routing guidance (reads here, writes/billed summarization on `event_manage`) and points to action='describe' for the full action/param reference. It does not spell out when to pick search vs details vs activity-list vs dashboard-list, leaving that to the action names and the describe reference.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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