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
767 changed this week · last read 24 Oct 2026
Claude Code CLI
228pages tracked
145 changed this week · last read 24 Oct 2026
Claude Documentation
280pages tracked
65 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
10,173 of the ledger's changes in api. Show every change
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9 Oct 2026
560 pages
+55980 −25839 lines
api
api/beta/organization/analytics/skills/list
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api/beta/organization/analytics/skills/list
## Headers
- `"anthropic-version": optional string`
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api
api/beta/organization/analytics/skills
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api/beta/organization/analytics/skills
### Headers
- `"anthropic-version": optional string`
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api
api/beta/organization/analytics/plugins/list
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api/beta/organization/analytics/plugins/list
## Headers
- `"anthropic-version": optional string`
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api/beta/organization/analytics/plugins
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api/beta/organization/analytics/plugins
### Headers
- `"anthropic-version": optional string`
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api
api/beta/organization/analytics/cost_report/list
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api/beta/organization/analytics/cost_report/list
## Headers
- `"anthropic-version": optional string`
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api
api/beta/organization/analytics/cost_report
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api/beta/organization/analytics/cost_report
### Headers
- `"anthropic-version": optional string`
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api/beta/organization/analytics/connectors/list
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api/beta/organization/analytics/connectors/list
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- `"anthropic-version": optional string`
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api/beta/organization/analytics/connectors
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api/beta/organization/analytics/connectors
### Headers
- `"anthropic-version": optional string`
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api/beta/organization/analytics/artifacts/list
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api/beta/organization/analytics/artifacts/list
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- `"anthropic-version": optional string`
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api/beta/organization/analytics/artifacts
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api/beta/organization/analytics/artifacts
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- `"anthropic-version": optional string`
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api/beta/organization/analytics/apps/chat/projects/list
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api/beta/organization/analytics/apps/chat/projects/list
## Headers
- `"anthropic-version": optional string`
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api/beta/organization/analytics/apps/chat/projects
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api/beta/organization/analytics/apps/chat/projects
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api/beta/organization/analytics/apps/chat
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api/beta/organization/analytics/apps/chat
#### Headers
- `"anthropic-version": optional string`
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api/beta/organization/analytics/apps
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api/beta/organization/analytics/apps
#### Headers
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api/beta/organization/analytics
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api/beta/organization/analytics
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api
api/beta/organization
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api/beta/organization
### Headers
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/beta/models/retrieve
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api/beta/models/retrieve
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/beta/models/list
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api/beta/models/list
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/beta/models
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api/beta/models
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/beta/messages/create
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api/beta/messages/create
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/beta/messages/count_tokens
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api/beta/messages/count_tokens
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/beta/messages/batches/retrieve
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api/beta/messages/batches/retrieve
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/beta/messages/batches/results
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api/beta/messages/batches/results
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/beta/messages/batches/list
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api/beta/messages/batches/list
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/beta/messages/batches/delete
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api/beta/messages/batches/delete
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/beta/messages/batches/create
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api/beta/messages/batches/create
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/beta/messages/batches/cancel
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api/beta/messages/batches/cancel
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/beta/messages/batches
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api/beta/messages/batches
- `"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/beta/messages
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api/beta/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/beta/memory_stores/update
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api/beta/memory_stores/update
- `"anthropic-version": optional string`
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api
api/beta/memory_stores/retrieve
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api/beta/memory_stores/retrieve
- `"anthropic-version": optional string`
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api/beta/memory_stores/memory_versions/retrieve
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api/beta/memory_stores/memory_versions/retrieve
- `"anthropic-version": optional string`
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api/beta/memory_stores/memory_versions/redact
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api/beta/memory_stores/memory_versions/redact
- `"anthropic-version": optional string`
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api
api/beta/memory_stores/memory_versions/list
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api/beta/memory_stores/memory_versions/list
- `"anthropic-version": optional string`
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api
api/beta/memory_stores/memory_versions
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api/beta/memory_stores/memory_versions
- `"anthropic-version": optional string`
- `"anthropic-version": optional string`
- `"anthropic-version": optional string`
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api
api/beta/memory_stores/memories/update
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api/beta/memory_stores/memories/update
- `"anthropic-version": optional string`
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api
api/beta/memory_stores/memories/retrieve
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api/beta/memory_stores/memories/retrieve
- `"anthropic-version": optional string`
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api
api/beta/memory_stores/memories/list
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api/beta/memory_stores/memories/list
- `"anthropic-version": optional string`
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api
api/beta/memory_stores/memories/delete
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api/beta/memory_stores/memories/delete
- `"anthropic-version": optional string`
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api
api/beta/memory_stores/memories/create
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api/beta/memory_stores/memories/create
- `"anthropic-version": optional string`
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api
api/beta/memory_stores/memories
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api/beta/memory_stores/memories
- `"anthropic-version": optional string`
- `"anthropic-version": optional string`
- `"anthropic-version": optional string`
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api
api/beta/memory_stores/list
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api/beta/memory_stores/list
- `"anthropic-version": optional string`
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api
api/beta/memory_stores/delete
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api/beta/memory_stores/delete
- `"anthropic-version": optional string`
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api
api/beta/memory_stores/create
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api/beta/memory_stores/create
- `"anthropic-version": optional string`
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api
api/beta/memory_stores/archive
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api/beta/memory_stores/archive
- `"anthropic-version": optional string`
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api
api/beta/memory_stores
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api/beta/memory_stores
- `"anthropic-version": optional string`
- `"anthropic-version": optional string`
- `"anthropic-version": optional string`
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api
api/beta/files/upload
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api/beta/files/upload
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/beta/files/retrieve_metadata
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api/beta/files/retrieve_metadata
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/beta/files/list
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api/beta/files/list
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/beta/files/download
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api/beta/files/download
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/beta/files/delete
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api/beta/files/delete
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/beta/files
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api/beta/files
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/beta/environments/work/update
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api/beta/environments/work/update
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/beta/environments/work/stop
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api/beta/environments/work/stop
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/beta/environments/work/stats
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api/beta/environments/work/stats
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/beta/environments/work/retrieve
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api/beta/environments/work/retrieve
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/beta/environments/work/poll
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api/beta/environments/work/poll
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/beta/environments/work/list
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api/beta/environments/work/list
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/beta/environments/work/heartbeat
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api/beta/environments/work/heartbeat
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/beta/environments/work/ack
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api/beta/environments/work/ack
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/beta/environments/work
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api/beta/environments/work
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/beta/environments/update
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api/beta/environments/update
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/beta/environments/retrieve
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api/beta/environments/retrieve
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/beta/environments/list
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api/beta/environments/list
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/beta/environments/delete
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api/beta/environments/delete
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/beta/environments/create
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api/beta/environments/create
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/beta/environments/archive
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api/beta/environments/archive
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/beta/environments
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api/beta/environments
- `"anthropic-version": optional string`
The version of the Claude API you want to use.
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api
api/beta/dreams/retrieve
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api/beta/dreams/retrieve
- `"anthropic-version": optional string`
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api
api/beta/dreams/list
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api/beta/dreams/list
- `"anthropic-version": optional string`
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api
api/beta/dreams/create
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api/beta/dreams/create
- `"anthropic-version": optional string`
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api
api/beta/dreams/cancel
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api/beta/dreams/cancel
- `"anthropic-version": optional string`
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api
api/beta/dreams/archive
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api/beta/dreams/archive
- `"anthropic-version": optional string`
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api
api/beta/dreams
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api/beta/dreams
- `"anthropic-version": optional string`
- `"anthropic-version": optional string`
- `"anthropic-version": optional string`
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api
api/beta/deployments/update
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api/beta/deployments/update
- `"anthropic-version": optional string`
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api
api/beta/deployments/unpause
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api/beta/deployments/unpause
- `"anthropic-version": optional string`
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api
api/beta/deployments/run
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api/beta/deployments/run
- `"anthropic-version": optional string`
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api
api/beta/deployments/retrieve
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api/beta/deployments/retrieve
- `"anthropic-version": optional string`
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api
api/beta/deployments/pause
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api/beta/deployments/pause
- `"anthropic-version": optional string`
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api
api/beta/deployments/list
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api/beta/deployments/list
- `"anthropic-version": optional string`
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api
api/beta/deployments/create
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api/beta/deployments/create
- `"anthropic-version": optional string`
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api
api/beta/deployments/archive
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api/beta/deployments/archive
- `"anthropic-version": optional string`
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api
api/beta/deployments
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api/beta/deployments
- `"anthropic-version": optional string`
- `"anthropic-version": optional string`
- `"anthropic-version": optional string`
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api
api/beta/deployment_runs/retrieve
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api/beta/deployment_runs/retrieve
- `"anthropic-version": optional string`
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api
api/beta/deployment_runs/list
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api/beta/deployment_runs/list
- `"anthropic-version": optional string`
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api
api/beta/deployment_runs
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api/beta/deployment_runs
- `"anthropic-version": optional string`
- `"anthropic-version": optional string`
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api
api/beta/agents/versions/list
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api/beta/agents/versions/list
- `"anthropic-version": optional string`
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api
api/beta/agents/versions
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api/beta/agents/versions
- `"anthropic-version": optional string`
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api
api/beta/agents/update
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api/beta/agents/update
- `"anthropic-version": optional string`
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api
api/beta/agents/retrieve
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api/beta/agents/retrieve
- `"anthropic-version": optional string`
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api
api/beta/agents/list
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api/beta/agents/list
- `"anthropic-version": optional string`
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api
api/beta/agents/create
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api/beta/agents/create
- `"anthropic-version": optional string`
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api
api/beta/agents/archive
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api/beta/agents/archive
- `"anthropic-version": optional string`
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api
api/beta/agents
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api/beta/agents
- `"anthropic-version": optional string`
- `"anthropic-version": optional string`
- `"anthropic-version": optional string`
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api
api/beta
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api/beta
- `"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
agents-and-tools/tool-use/troubleshooting-tool-use
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agents-and-tools/tool-use/troubleshooting-tool-use
## JSON escaping differences (Opus 4.6+)
## JSON escaping differences between model versions
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api
agents-and-tools/tool-use/tool-search-tool
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agents-and-tools/tool-use/tool-search-tool
| Claude Sonnet 5 (claude-sonnet-5) | `tool_search_tool_regex_20251119`, `tool_sear
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api
agents-and-tools/tool-use/text-editor-tool
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agents-and-tools/tool-use/text-editor-tool
| Tool | Additional input tokens |
| ----------------------------------- | ----------------------- |
| `text_editor_20250429` (Claude 4.x) | 700 tokens |
| Tool | Additional input tokens |
| ------------------------------------------------------------------------------ | ----------------------- |
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api
agents-and-tools/tool-use/programmatic-tool-calling
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agents-and-tools/tool-use/programmatic-tool-calling
Amazon Bedrock: not available
Google Cloud: not available
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agents-and-tools/tool-use/define-tools
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agents-and-tools/tool-use/define-tools
| Model or setting | Restriction
| --------------------------------------------------------------------------------------------------------------------------------------------- | ----------------------------------
| Manual [extended thinking](https://platform.claude.com/docs/en/build-with-claude/extended-thinking) (`thinking: {type: "enabled"}`) | `any` and `tool` are not supported
| Claude Opus 5.5, Claude Sonnet 5.5, Claude Fable 5.1, and [Claude Mythos 5.1](https://platform.claude.com/docs/en/models/mythos-5-1/overview) | `any` and `tool` return a [400 err
| Model or setting | Restriction
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Recorded here 9 Oct 2026 15:37 UTC
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