HomeDocs changes
Documentation changes
What the docs quietly changed.
Anthropic's published documentation, fetched on a schedule and diffed against the last copy. Every edit dated, including the ones that never made a release note.
Last poll read all 4 cleanly: Claude Code CLI, Claude Developer Platform, Claude Documentation, Model Context Protocol. A date here is when this site noticed, not when Anthropic edited.
Claude Developer Platform
821pages tracked
774 changed this week · last read 23 Oct 2026
Claude Code CLI
228pages tracked
148 changed this week · last read 23 Oct 2026
Claude Documentation
280pages tracked
82 changed this week · last read 23 Oct 2026
Model Context Protocol
357pages tracked
171 changed this week · last read 23 Oct 2026
100 on this page
10,166 of the ledger's changes in api. Show every change
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9 Oct 2026
560 pages
+55980 −25839 lines
api
api/organization/external_keys/update
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api/organization/external_keys/update
## Headers
- `"anthropic-version": optional string`
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api
api/organization/external_keys/retrieve
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api/organization/external_keys/retrieve
## Headers
- `"anthropic-version": optional string`
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api
api/organization/external_keys/list
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api/organization/external_keys/list
## Headers
- `"anthropic-version": optional string`
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api
api/organization/external_keys/delete
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api/organization/external_keys/delete
## Headers
- `"anthropic-version": optional string`
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api
api/organization/external_keys/create
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api/organization/external_keys/create
## Headers
- `"anthropic-version": optional string`
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api
api/organization/external_keys
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api/organization/external_keys
### Headers
- `"anthropic-version": optional string`
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api
api/organization/compliance_settings/update
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api/organization/compliance_settings/update
## Headers
- `"anthropic-version": optional string`
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api
api/organization/compliance_settings/retrieve
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api/organization/compliance_settings/retrieve
## Headers
- `"anthropic-version": optional string`
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api
api/organization/compliance_settings
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api/organization/compliance_settings
### Headers
- `"anthropic-version": optional string`
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api
api/organization/api_keys/update
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api/organization/api_keys/update
## Headers
- `"anthropic-version": optional string`
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api
api/organization/api_keys/retrieve
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api/organization/api_keys/retrieve
## Headers
- `"anthropic-version": optional string`
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api
api/organization/api_keys/list
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api/organization/api_keys/list
## Headers
- `"anthropic-version": optional string`
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api
api/organization/api_keys
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api/organization/api_keys
### Headers
- `"anthropic-version": optional string`
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api
api/organization
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api/organization
### Headers
- `"anthropic-version": optional string`
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api
api/models/retrieve
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api/models/retrieve
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/models/list
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api/models/list
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/models
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api/models
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/messages/create
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api/messages/create
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/messages/count_tokens
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api/messages/count_tokens
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/messages/batches/retrieve
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api/messages/batches/retrieve
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/messages/batches/results
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api/messages/batches/results
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/messages/batches/list
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api/messages/batches/list
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/messages/batches/delete
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api/messages/batches/delete
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/messages/batches/create
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api/messages/batches/create
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/messages/batches/cancel
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api/messages/batches/cancel
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/messages/batches
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api/messages/batches
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/messages
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api/messages
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
Read more about versioning and our version history [here](https://platform.claude.com/docs/en/api/versioning).
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api
api/files/upload
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api/files/upload
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/files/retrieve_metadata
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api/files/retrieve_metadata
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/files/list
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api/files/list
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/files/download
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api/files/download
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
Read more about versioning and our version history [here](https://platform.claude.com/docs/en/api/versioning).
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api
api/files/delete
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api/files/delete
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/files
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api/files
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/errors
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api/errors
In both messages, "enable thinking" means adaptive thinking: omit the `thinking` field or send `thinking: {"type": "adaptive"}`. Claude Sonnet 5.5 rejects `"enabled"` with a 400 er
In both messages, "enable thinking" means adaptive thinking: omit the `thinking` field or send `thinking: {"type": "adaptive"}`. Claude Sonnet 5.5 and Claude Haiku 5.5 reject `"ena
On the Claude API and Google Cloud, Claude Opus 5.5, Claude Sonnet 5.5, and Claude Haiku 5.5 support [computer use](https://platform.claude.com/docs/en/agents-and-tools/tool-use/co
On the Claude API and Google Cloud, Claude Opus 5.5, Claude Sonnet 5.5, and Claude Haiku 5.5 support [computer use](https://platform.claude.com/docs/en/agents-and-tools/tool-use/co
The API returns the same message for any Anthropic-defined tool type that the requested model doesn't support. Declare `{"type": "computer_toolset_20260801"}` without the beta head
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api
api/compliance/organizations/users/list
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api/compliance/organizations/users/list
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/compliance/organizations/users
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api/compliance/organizations/users
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/compliance/organizations/settings/retrieve
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api/compliance/organizations/settings/retrieve
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/compliance/organizations/settings
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api/compliance/organizations/settings
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/compliance/organizations/roles/retrieve
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api/compliance/organizations/roles/retrieve
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/compliance/organizations/roles/permissions/list
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api/compliance/organizations/roles/permissions/list
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/compliance/organizations/roles/permissions
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api/compliance/organizations/roles/permissions
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/compliance/organizations/roles/list
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api/compliance/organizations/roles/list
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/compliance/organizations/roles
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api/compliance/organizations/roles
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/compliance/organizations/list
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api/compliance/organizations/list
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/compliance/organizations
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api/compliance/organizations
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/compliance/groups/retrieve
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api/compliance/groups/retrieve
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/compliance/groups/members/list
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api/compliance/groups/members/list
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/compliance/groups/members
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api/compliance/groups/members
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/compliance/groups/list
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api/compliance/groups/list
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/compliance/groups
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api/compliance/groups
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/compliance/code/artifacts/retrieve_version
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api/compliance/code/artifacts/retrieve_version
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
Read more about versioning and our version history [here](https://platform.claude.com/docs/en/api/versioning).
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api
api/compliance/code/artifacts/list
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api/compliance/code/artifacts/list
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
Read more about versioning and our version history [here](https://platform.claude.com/docs/en/api/versioning).
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api
api/compliance/code/artifacts/delete
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api/compliance/code/artifacts/delete
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/compliance/code/artifacts
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api/compliance/code/artifacts
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
Read more about versioning and our version history [here](https://platform.claude.com/docs/en/api/versioning).
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api
api/compliance/code
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api/compliance/code
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
Read more about versioning and our version history [here](https://platform.claude.com/docs/en/api/versioning).
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api
api/compliance/apps/sessions/remote/messages/list
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api/compliance/apps/sessions/remote/messages/list
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/compliance/apps/sessions/remote/messages
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api/compliance/apps/sessions/remote/messages
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/compliance/apps/sessions/remote/list
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api/compliance/apps/sessions/remote/list
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/compliance/apps/sessions/remote
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api/compliance/apps/sessions/remote
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/compliance/apps/sessions/local/retrieve
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api/compliance/apps/sessions/local/retrieve
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/compliance/apps/sessions/local/messages/list
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api/compliance/apps/sessions/local/messages/list
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/compliance/apps/sessions/local/messages
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api/compliance/apps/sessions/local/messages
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/compliance/apps/sessions/local/list
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api/compliance/apps/sessions/local/list
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/compliance/apps/sessions/local
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api/compliance/apps/sessions/local
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/compliance/apps/sessions
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api/compliance/apps/sessions
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/compliance/apps/projects/retrieve
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api/compliance/apps/projects/retrieve
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/compliance/apps/projects/list
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api/compliance/apps/projects/list
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/compliance/apps/projects/documents/retrieve
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api/compliance/apps/projects/documents/retrieve
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/compliance/apps/projects/documents/metadata
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api/compliance/apps/projects/documents/metadata
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/compliance/apps/projects/documents/delete
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api/compliance/apps/projects/documents/delete
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/compliance/apps/projects/documents
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api/compliance/apps/projects/documents
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/compliance/apps/projects/delete
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api/compliance/apps/projects/delete
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/compliance/apps/projects/collaborators/list
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api/compliance/apps/projects/collaborators/list
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/compliance/apps/projects/collaborators
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api/compliance/apps/projects/collaborators
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/compliance/apps/projects/attachments/list
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api/compliance/apps/projects/attachments/list
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/compliance/apps/projects/attachments
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api/compliance/apps/projects/attachments
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/compliance/apps/projects
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api/compliance/apps/projects
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/compliance/apps/chats/messages/list
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api/compliance/apps/chats/messages/list
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/compliance/apps/chats/messages
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api/compliance/apps/chats/messages
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/compliance/apps/chats/list
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api/compliance/apps/chats/list
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/compliance/apps/chats/generated_files/retrieve
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api/compliance/apps/chats/generated_files/retrieve
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/compliance/apps/chats/generated_files/download
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api/compliance/apps/chats/generated_files/download
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
Read more about versioning and our version history [here](https://platform.claude.com/docs/en/api/versioning).
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api
api/compliance/apps/chats/generated_files
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api/compliance/apps/chats/generated_files
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/compliance/apps/chats/files/retrieve
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api/compliance/apps/chats/files/retrieve
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/compliance/apps/chats/files/download
±changed
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apichanged
api/compliance/apps/chats/files/download
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
Read more about versioning and our version history [here](https://platform.claude.com/docs/en/api/versioning).
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api
api/compliance/apps/chats/files/delete
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api/compliance/apps/chats/files/delete
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/compliance/apps/chats/files
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api/compliance/apps/chats/files
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/compliance/apps/chats/delete
±changed
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api/compliance/apps/chats/delete
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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Recorded here 9 Oct 2026 15:37 UTC
api
api/compliance/apps/chats
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api/compliance/apps/chats
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/compliance/apps/artifacts/retrieve
±changed
+6−0
apichanged
api/compliance/apps/artifacts/retrieve
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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Recorded here 9 Oct 2026 15:37 UTC
api
api/compliance/apps/artifacts/download
±changed
+6−0
apichanged
api/compliance/apps/artifacts/download
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
Read more about versioning and our version history [here](https://platform.claude.com/docs/en/api/versioning).
+6 −0 lines
Recorded here 9 Oct 2026 15:37 UTC
api
api/compliance/apps/artifacts
±changed
+12−0
apichanged
api/compliance/apps/artifacts
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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Recorded here 9 Oct 2026 15:37 UTC
api
api/compliance/apps
±changed
+196−4
apichanged
api/compliance/apps
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/compliance/activities/list
±changed
+23−1
apichanged
api/compliance/activities/list
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
Read more about versioning and our version history [here](https://platform.claude.com/docs/en/api/versioning).
+23 −1 lines
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api
api/compliance/activities
±changed
+40−2
apichanged
api/compliance/activities
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
Read more about versioning and our version history [here](https://platform.claude.com/docs/en/api/versioning).
+40 −2 lines
Recorded here 9 Oct 2026 15:37 UTC
api
api/compliance
±changed
+295−7
apichanged
api/compliance
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
Read more about versioning and our version history [here](https://platform.claude.com/docs/en/api/versioning).
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Recorded here 9 Oct 2026 15:37 UTC
api
api/completions/create
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api/completions/create
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/completions
±changed
+6−0
apichanged
api/completions
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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Recorded here 9 Oct 2026 15:37 UTC
api
api/beta/vaults/update
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+2−0
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api/beta/vaults/update
- `"anthropic-version": optional string`
+2 −0 lines
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api
api/beta/vaults/retrieve
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+2−0
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api/beta/vaults/retrieve
- `"anthropic-version": optional string`
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Recorded here 9 Oct 2026 15:37 UTC
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