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
81 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
ReadSourcePageWhatLines
18 Sep 2026
117 pages
+31104 −26348 lines
api
managed-agents/skills
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+1−1
apichanged
managed-agents/skills
<CodeGroup defaultLanguage="CLI">
<CodeGroup>
+1 −1 lines
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api
managed-agents/sessions
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+12−23
apichanged
managed-agents/sessions
<CodeGroup defaultLanguage="CLI">
<CodeGroup>
session=$(curl -fsSL https://api.anthropic.com/v1/sessions \
curl -fsSL https://api.anthropic.com/v1/sessions \
)
+12 −23 lines
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api
managed-agents/session-operations
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+7−8
apichanged
managed-agents/session-operations
<CodeGroup defaultLanguage="CLI">
<CodeGroup>
<CodeGroup defaultLanguage="CLI">
<CodeGroup>
retrieved=$(curl -fsSL "https://api.anthropic.com/v1/sessions/$SESSION_ID" \
+7 −8 lines
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api
managed-agents/self-hosted-sandboxes
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apichanged
managed-agents/self-hosted-sandboxes
<CodeGroup>
<CodeGroup defaultLanguage="CLI">
+1 −1 lines
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api
managed-agents/scheduled-deployments
±changed
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apichanged
managed-agents/scheduled-deployments
<CodeGroup defaultLanguage="CLI">
<CodeGroup>
DEPLOYMENT_ID=$(
curl --fail-with-body -sS "https://api.anthropic.com/v1/deployments?beta=true" \
-H "x-api-key: $ANTHROPIC_API_KEY" \
+14 −17 lines
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api
managed-agents/permission-policies
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apichanged
managed-agents/permission-policies
<CodeGroup defaultLanguage="CLI">
<CodeGroup>
<CodeGroup defaultLanguage="CLI">
<CodeGroup>
+2 −2 lines
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api
managed-agents/onboarding
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+3−3
apichanged
managed-agents/onboarding
<CodeGroup defaultLanguage="CLI">
<CodeGroup>
session=$(curl -fsSL https://api.anthropic.com/v1/sessions \
curl -fsSL https://api.anthropic.com/v1/sessions \
}')
+3 −3 lines
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api
managed-agents/multiagent-orchestration
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apichanged
managed-agents/multiagent-orchestration
<CodeGroup>
Create the researcher, which declares the GitHub MCP server, and the coordinator that delegates to the researcher:
<CodeGroup defaultLanguage="CLI">
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api
managed-agents/memory
±changed
+29−42
apichanged
managed-agents/memory
<CodeGroup defaultLanguage="CLI">
<CodeGroup>
store=$(curl -s https://api.anthropic.com/v1/memory_stores \
curl -s https://api.anthropic.com/v1/memory_stores \
-d '{"name": "User Preferences", "description": "Per-user preferences and project context."}')
+29 −42 lines
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api
managed-agents/files
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+25−37
apichanged
managed-agents/files
file_id=$(jq -er '.id' <<<"${file}")
printf 'File ID: %s\n' "${file_id}"
FILE_ID=$(jq -er '.id' <<<"${file}")
session=$(
jq -n \
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api
managed-agents/events-and-streaming
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+7−10
apichanged
managed-agents/events-and-streaming
-H "content-type: application/json" \
| jq -r '.data[] | "[\(.type)] \(.processed_at)"'
-H "content-type: application/json"
ant beta:sessions:events list --session-id "$SESSION_ID" \
--format jsonl --transform '{type,processed_at}'
+7 −10 lines
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api
managed-agents/environments
±changed
+21−27
apichanged
managed-agents/environments
environment=$(curl -fsS https://api.anthropic.com/v1/environments \
curl -fsS https://api.anthropic.com/v1/environments \
)
environment_id=$(jq -r '.id' <<< "$environment")
+21 −27 lines
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api
managed-agents/dreams
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+2−6
apichanged
managed-agents/dreams
dream=$(curl -s https://api.anthropic.com/v1/dreams \
curl -s https://api.anthropic.com/v1/dreams \
)
dream_id=$(jq -r '.id' <<< "$dream")
echo "$dream_id" # drm_01...
+2 −6 lines
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api
managed-agents/define-outcomes
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+19−25
apichanged
managed-agents/define-outcomes
rubric=$(curl -fsSL https://api.anthropic.com/v1/files \
curl -fsSL https://api.anthropic.com/v1/files \
-F file=@/tmp/rubric.md)
rubric_id=$(jq -r '.id' <<<"$rubric")
printf 'Uploaded rubric: %s\n' "$rubric_id"
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api
managed-agents/budgets
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+6−9
apichanged
managed-agents/budgets
<CodeGroup defaultLanguage="CLI">
<CodeGroup>
session=$(curl -sS --fail-with-body https://api.anthropic.com/v1/sessions \
curl -sS --fail-with-body https://api.anthropic.com/v1/sessions \
)
+6 −9 lines
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api
managed-agents/agent-setup
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+3−3
apichanged
managed-agents/agent-setup
<CodeGroup defaultLanguage="cURL">
<CodeGroup>
<CodeGroup defaultLanguage="CLI">
<CodeGroup>
<CodeGroup defaultLanguage="CLI">
+3 −3 lines
Recorded here 18 Sep 2026 20:39 UTC
api
manage-claude/cmek-google-cloud-kms
±changed
+397−375
apichanged
manage-claude/cmek-google-cloud-kms
<Steps>
<Step title="Register the key with Anthropic">
Create an external key configuration through the Admin API, using the resource name from the Note the full key resource name step under Encryption key setup.
<CodeGroup>
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api
manage-claude/cmek-azure-key-vault
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apichanged
manage-claude/cmek-azure-key-vault
<Steps>
<Step title="Register the key with Anthropic">
Create an external key configuration through the Admin API.
<CodeGroup>
+415 −393 lines
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api
manage-claude/cmek-aws-kms
±changed
+397−375
apichanged
manage-claude/cmek-aws-kms
<Steps>
<Step title="Register the key with Anthropic">
Create an external key configuration through the Admin API.
<CodeGroup>
+397 −375 lines
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api
manage-claude/cmek
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+1−1
apichanged
manage-claude/cmek
Only Organization Admins (on Claude Platform; the Admin role on Claude Platform on AWS) or Owners and the Primary Owner (on Claude Enterprise) can configure CMEK. On Claude Platfor
Only Organization Admins (on Claude Platform; the Admin role on Claude Platform on AWS) or Owners and the Primary Owner (on Claude Enterprise) can configure CMEK. On Claude Platfor
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api
build-with-claude/thinking
±changed
+16−17
apichanged
build-with-claude/thinking
| Model | Max output tokens | Batches beta ceiling |
| :---------------- | :---------------- | :------------------- |
| Claude Fable 5.1 | 128K | — |
| Claude Mythos 5.1 | 128K | — |
| Claude Fable 5 | 128K | — |
+16 −17 lines
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api
build-with-claude/skills-guide
±changed
+5−5
apichanged
build-with-claude/skills-guide
<CodeGroup defaultLanguage="CLI">
<CodeGroup>
<CodeGroup defaultLanguage="CLI">
<CodeGroup>
<CodeGroup defaultLanguage="CLI">
+5 −5 lines
Recorded here 18 Sep 2026 20:39 UTC
api
build-with-claude/refusals-and-fallback
±changed
+4−6
apichanged
build-with-claude/refusals-and-fallback
}' | jq -r '.model'
}'
--beta server-side-fallback-2026-07-01 \
--transform model --raw-output
--beta server-side-fallback-2026-07-01
+4 −6 lines
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api
build-with-claude/preserved-thinking
±changed
+0−1
apichanged
build-with-claude/preserved-thinking
--transform '{content.#(type=="text")#.text,input_transformations}' \
+0 −1 lines
Recorded here 18 Sep 2026 20:39 UTC
api
build-with-claude/extended-thinking
±changed
+1−1
apichanged
build-with-claude/extended-thinking
--transform content --format yaml <<'YAML'
--format yaml <<'YAML'
+1 −1 lines
Recorded here 18 Sep 2026 20:39 UTC
api
build-with-claude/claude-platform-on-aws
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+15−15
apichanged
build-with-claude/claude-platform-on-aws
Claude Platform on AWS has the following operational characteristics: data might not reside in AWS, inference might route to Anthropic's primary cloud, and subservices might change
Anthropic uses AWS infrastructure to process your API requests, run model inference, and store your workspace content (such as prompts, outputs, files, Skills, and batches). For wo
If you use Claude Platform on AWS, your content (such as prompts and completions) is processed by Anthropic outside of AWS. See Anthropic's [data use policies](https://www.an
When you use Claude Platform on AWS, Anthropic processes and stores your content (such as prompts and outputs) on AWS infrastructure. For workspaces created before September
| Model | Model ID |
+15 −15 lines
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api
build-with-claude/claude-on-vertex-ai
±changed
+17−18
apichanged
build-with-claude/claude-on-vertex-ai
| Model | Agent Platform API model ID |
| ---------------------------- | --------------------------- |
| Claude Fable 5.1 | claude-fable-5-1 |
| Claude Fable 5 | claude-fable-5 |
| Claude Opus 5 | claude-opus-5 |
+17 −18 lines
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api
build-with-claude/claude-in-microsoft-foundry
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apichanged
build-with-claude/claude-in-microsoft-foundry
| ----------------- | ----------------------- | --------------- | ------------------- |
| Claude Fable 5.1 | claude-fable-5-1 | | ✓ |
| Claude Fable 5 | claude-fable-5 | | ✓ |
| Claude Opus 5 | claude-opus-5 | ✓ | ✓ |
| Claude Opus 4.8 | claude-opus-4-8 | ✓ | ✓ |
+12 −12 lines
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api
api/skills/versions/create
±changed
+1−1
apichanged
api/skills/versions/create
-F files='["Example data"]'
-F 'files[]=@/path/to/file'
+1 −1 lines
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api
api/skills/versions
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+1−1
apichanged
api/skills/versions
-F files='["Example data"]'
-F 'files[]=@/path/to/file'
+1 −1 lines
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api
api/skills/create
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+1−1
apichanged
api/skills/create
-F files='["Example data"]'
-F 'files[]=@/path/to/file'
+1 −1 lines
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api
api/skills
±changed
+2−2
apichanged
api/skills
-F files='["Example data"]'
-F 'files[]=@/path/to/file'
-F files='["Example data"]'
-F 'files[]=@/path/to/file'
+2 −2 lines
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api
api/compliance/activities/list
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+6203−5695
apichanged
api/compliance/activities/list
No line of the body moved in this read.
+6203 −5695 lines
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api
api/compliance/activities
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apichanged
api/compliance/activities
No line of the body moved in this read.
+12388 −11388 lines
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api
api/compliance
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+6203−5695
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api/compliance
No line of the body moved in this read.
+6203 −5695 lines
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api
api/beta/skills/versions/create
±changed
+1−1
apichanged
api/beta/skills/versions/create
-F files='["Example data"]'
-F 'files[]=@/path/to/file'
+1 −1 lines
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api
api/beta/skills/versions
±changed
+1−1
apichanged
api/beta/skills/versions
-F files='["Example data"]'
-F 'files[]=@/path/to/file'
+1 −1 lines
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api
api/beta/skills/create
±changed
+1−1
apichanged
api/beta/skills/create
-F files='["Example data"]'
-F 'files[]=@/path/to/file'
+1 −1 lines
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api
api/beta/skills
±changed
+2−2
apichanged
api/beta/skills
-F files='["Example data"]'
-F 'files[]=@/path/to/file'
-F files='["Example data"]'
-F 'files[]=@/path/to/file'
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api
api/beta/organization/spend_limits/retrieve
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+15−1
apichanged
api/beta/organization/spend_limits/retrieve
- `scope: User or SeatTier or RBACGroup or 2 more`
- `scope: User or SeatTier or RBACGroup or 3 more`
- `Workspace object`
Scope selecting one workspace of a Claude Console organization.
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api
api/beta/organization/spend_limits/list_effective
±changed
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apichanged
api/beta/organization/spend_limits/list_effective
- `actor: object`
A user within the organization. `name` and `email_address` are
null when the underlying account is unavailable or has been deleted;
`deleted` is true only for deleted accounts.
+116 −44 lines
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api
api/beta/organization/spend_limits/increase_requests/retrieve
±changed
+116−44
apichanged
api/beta/organization/spend_limits/increase_requests/retrieve
- `actor: object`
A user within the organization. `name` and `email_address` are
null when the underlying account is unavailable or has been deleted;
`deleted` is true only for deleted accounts.
+116 −44 lines
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api
api/beta/organization/spend_limits/increase_requests/list
±changed
+116−44
apichanged
api/beta/organization/spend_limits/increase_requests/list
- `actor: object`
A user within the organization. `name` and `email_address` are
null when the underlying account is unavailable or has been deleted;
`deleted` is true only for deleted accounts.
+116 −44 lines
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api
api/beta/organization/spend_limits/increase_requests/deny
±changed
+116−44
apichanged
api/beta/organization/spend_limits/increase_requests/deny
- `actor: object`
A user within the organization. `name` and `email_address` are
null when the underlying account is unavailable or has been deleted;
`deleted` is true only for deleted accounts.
+116 −44 lines
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api
api/beta/organization/spend_limits/increase_requests/approve
±changed
+131−45
apichanged
api/beta/organization/spend_limits/increase_requests/approve
- `scope: User or SeatTier or RBACGroup or 2 more`
- `scope: User or SeatTier or RBACGroup or 3 more`
- `Workspace object`
Scope selecting one workspace of a Claude Console organization.
+131 −45 lines
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api
api/beta/organization/spend_limits/increase_requests
±changed
+969−509
apichanged
api/beta/organization/spend_limits/increase_requests
- `actor: object`
A user within the organization. `name` and `email_address` are
null when the underlying account is unavailable or has been deleted;
`deleted` is true only for deleted accounts.
+969 −509 lines
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api
api/beta/organization/spend_limits/delete
±changed
+6−4
apichanged
api/beta/organization/spend_limits/delete
Delete a per-user spend limit override.
Delete a spend limit.
The member falls back to any inherited spend limit at that period.
Seat-tier, group, and organization-level rows cannot be deleted via
this endpoint.
+6 −4 lines
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api
api/beta/organization/spend_limits/create
±changed
+59−17
apichanged
api/beta/organization/spend_limits/create
Set a per-user spend limit override.
Set a spend limit.
overwrites it in place. Only `scope.type: "user"` is accepted; seat-tier,
group, and organization-level defaults are configured in claude.ai.
overwrites it in place. A Claude Enterprise organization sets `user`
+59 −17 lines
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api
api/beta/organization/spend_limits
±changed
+932−414
apichanged
api/beta/organization/spend_limits
Set a per-user spend limit override.
Set a spend limit.
overwrites it in place. Only `scope.type: "user"` is accepted; seat-tier,
group, and organization-level defaults are configured in claude.ai.
overwrites it in place. A Claude Enterprise organization sets `user`
+932 −414 lines
Recorded here 18 Sep 2026 20:39 UTC
api
api/beta/organization/mcp_tunnels/tunnel_certificates/retrieve
±changed
+2−1
apichanged
api/beta/organization/mcp_tunnels/tunnel_certificates/retrieve
Optional header to specify the beta version(s) you want to use.
This endpoint is in beta: requests must send `mcp-tunnels-2026-05-19` in this header.
-H 'anthropic-beta: mcp-tunnels-2026-05-19' \
+2 −1 lines
Recorded here 18 Sep 2026 20:39 UTC
api
api/beta/organization/mcp_tunnels/tunnel_certificates/list
±changed
+2−1
apichanged
api/beta/organization/mcp_tunnels/tunnel_certificates/list
Optional header to specify the beta version(s) you want to use.
This endpoint is in beta: requests must send `mcp-tunnels-2026-05-19` in this header.
-H 'anthropic-beta: mcp-tunnels-2026-05-19' \
+2 −1 lines
Recorded here 18 Sep 2026 20:39 UTC
api
api/beta/organization/mcp_tunnels/tunnel_certificates/create
±changed
+2−1
apichanged
api/beta/organization/mcp_tunnels/tunnel_certificates/create
Optional header to specify the beta version(s) you want to use.
This endpoint is in beta: requests must send `mcp-tunnels-2026-05-19` in this header.
-H 'anthropic-beta: mcp-tunnels-2026-05-19' \
+2 −1 lines
Recorded here 18 Sep 2026 20:39 UTC
api
api/beta/organization/mcp_tunnels/tunnel_certificates/archive
±changed
+2−1
apichanged
api/beta/organization/mcp_tunnels/tunnel_certificates/archive
Optional header to specify the beta version(s) you want to use.
This endpoint is in beta: requests must send `mcp-tunnels-2026-05-19` in this header.
-H 'anthropic-beta: mcp-tunnels-2026-05-19' \
+2 −1 lines
Recorded here 18 Sep 2026 20:39 UTC
api
api/beta/organization/mcp_tunnels/tunnel_certificates
±changed
+8−4
apichanged
api/beta/organization/mcp_tunnels/tunnel_certificates
Optional header to specify the beta version(s) you want to use.
This endpoint is in beta: requests must send `mcp-tunnels-2026-05-19` in this header.
-H 'anthropic-beta: mcp-tunnels-2026-05-19' \
Optional header to specify the beta version(s) you want to use.
This endpoint is in beta: requests must send `mcp-tunnels-2026-05-19` in this header.
+8 −4 lines
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api
api/beta/organization/mcp_tunnels/rotate_token
±changed
+2−1
apichanged
api/beta/organization/mcp_tunnels/rotate_token
Optional header to specify the beta version(s) you want to use.
This endpoint is in beta: requests must send `mcp-tunnels-2026-05-19` in this header.
-H 'anthropic-beta: mcp-tunnels-2026-05-19' \
+2 −1 lines
Recorded here 18 Sep 2026 20:39 UTC
api
api/beta/organization/mcp_tunnels/reveal_token
±changed
+2−1
apichanged
api/beta/organization/mcp_tunnels/reveal_token
Optional header to specify the beta version(s) you want to use.
This endpoint is in beta: requests must send `mcp-tunnels-2026-05-19` in this header.
-H 'anthropic-beta: mcp-tunnels-2026-05-19' \
+2 −1 lines
Recorded here 18 Sep 2026 20:39 UTC
api
api/beta/organization/mcp_tunnels/retrieve
±changed
+2−1
apichanged
api/beta/organization/mcp_tunnels/retrieve
Optional header to specify the beta version(s) you want to use.
This endpoint is in beta: requests must send `mcp-tunnels-2026-05-19` in this header.
-H 'anthropic-beta: mcp-tunnels-2026-05-19' \
+2 −1 lines
Recorded here 18 Sep 2026 20:39 UTC
api
api/beta/organization/mcp_tunnels/list
±changed
+2−1
apichanged
api/beta/organization/mcp_tunnels/list
Optional header to specify the beta version(s) you want to use.
This endpoint is in beta: requests must send `mcp-tunnels-2026-05-19` in this header.
-H 'anthropic-beta: mcp-tunnels-2026-05-19' \
+2 −1 lines
Recorded here 18 Sep 2026 20:39 UTC
api
api/beta/organization/mcp_tunnels/archive
±changed
+2−1
apichanged
api/beta/organization/mcp_tunnels/archive
Optional header to specify the beta version(s) you want to use.
This endpoint is in beta: requests must send `mcp-tunnels-2026-05-19` in this header.
-H 'anthropic-beta: mcp-tunnels-2026-05-19' \
+2 −1 lines
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api
api/beta/organization/mcp_tunnels
±changed
+18−9
apichanged
api/beta/organization/mcp_tunnels
Optional header to specify the beta version(s) you want to use.
This endpoint is in beta: requests must send `mcp-tunnels-2026-05-19` in this header.
-H 'anthropic-beta: mcp-tunnels-2026-05-19' \
Optional header to specify the beta version(s) you want to use.
This endpoint is in beta: requests must send `mcp-tunnels-2026-05-19` in this header.
+18 −9 lines
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api
api/beta/organization
±changed
+694−253
apichanged
api/beta/organization
Optional header to specify the beta version(s) you want to use.
This endpoint is in beta: requests must send `mcp-tunnels-2026-05-19` in this header.
-H 'anthropic-beta: mcp-tunnels-2026-05-19' \
Optional header to specify the beta version(s) you want to use.
This endpoint is in beta: requests must send `mcp-tunnels-2026-05-19` in this header.
+694 −253 lines
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api
api/beta/messages/create
±changed
+2−2
apichanged
api/beta/messages/create
Reference to a single MCP tool by its server and remote name — the
Reference to a single MCP tool by its server and remote name; the
Reference to a single MCP tool by its server and remote name — the
Reference to a single MCP tool by its server and remote name; the
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api
api/beta/messages/count_tokens
±changed
+2−2
apichanged
api/beta/messages/count_tokens
Reference to a single MCP tool by its server and remote name — the
Reference to a single MCP tool by its server and remote name; the
Reference to a single MCP tool by its server and remote name — the
Reference to a single MCP tool by its server and remote name; the
+2 −2 lines
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api
api/beta/messages/batches/create
±changed
+2−2
apichanged
api/beta/messages/batches/create
Reference to a single MCP tool by its server and remote name — the
Reference to a single MCP tool by its server and remote name; the
Reference to a single MCP tool by its server and remote name — the
Reference to a single MCP tool by its server and remote name; the
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api
api/beta/messages/batches
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api/beta/messages/batches
Reference to a single MCP tool by its server and remote name — the
Reference to a single MCP tool by its server and remote name; the
Reference to a single MCP tool by its server and remote name — the
Reference to a single MCP tool by its server and remote name; the
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api
api/beta/messages
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api/beta/messages
Reference to a single MCP tool by its server and remote name — the
Reference to a single MCP tool by its server and remote name; the
Reference to a single MCP tool by its server and remote name — the
Reference to a single MCP tool by its server and remote name; the
Reference to a single MCP tool by its server and remote name — the
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api
api/beta
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api/beta
Reference to a single MCP tool by its server and remote name — the
Reference to a single MCP tool by its server and remote name; the
Reference to a single MCP tool by its server and remote name — the
Reference to a single MCP tool by its server and remote name; the
Reference to a single MCP tool by its server and remote name — the
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api
agents-and-tools/agent-skills/quickstart
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agents-and-tools/agent-skills/quickstart
<CodeGroup defaultLanguage="CLI">
<CodeGroup>
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api
about-claude/model-deprecations
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about-claude/model-deprecations
| -------------------------- | ------------- | ----------------- | ---------------------------------- |
| :------------------------- | :------------ | :---------------- | :--------------------------------- |
| claude-mythos-5-1 | Active | N/A | Not sooner than September 1, 2027 |
| claude-mythos-5 | Active | N/A | Not sooner than June 9, 2027 |
| claude-mythos-preview | Deprecated | June 9, 2026 | To be announced |
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claude-docs
government/changelog
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government/changelog
<Update label="2026.09.16.1">
* Fixed members not being reactivated after they are re-enabled in your identity provider.
* Changed SCIM provisioning to reject requests to deactivate an organization's primary owner or a tenant's last admin until ownership is transferred or another admin is added.
* Changed SCIM provisioning to return an error that says what to do first when an identity provider deactivates or changes the email address of a member who is not yet linked to
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claude-code
sub-agents
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claude-codechanged
sub-agents
* **CLAUDE.md files**: every level of the [CLAUDE.md hierarchy](/docs/en/memory#how-claude-md-files-load) the main conversation loads, including `~/.claude/CLAUDE.md`, project rule
* **CLAUDE.md files**: every level of the [CLAUDE.md hierarchy](/docs/en/memory#how-claude-md-files-load) the main conversation loads, including `~/.claude/CLAUDE.md`, project rule
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claude-code
settings-reference
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settings-reference
Built-in plugins store their options under the same key with an `@builtin` suffix. For example, the [**Project instructions**](/docs/en/memory#choose-which-instruction-files-load)
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claude-code
plugins-reference
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plugins-reference
Claude Code skips `yarn.lock` and `pnpm-lock.yaml` because Yarn and pnpm support resolution-time configuration hooks that bypass `--ignore-scripts`. When a `bunfig.toml` sits besid
Claude Code skips the install in two cases, each with its own fix:
* If your plugin ships only a `yarn.lock` or `pnpm-lock.yaml`, replace it with an npm lockfile.
* If a `bunfig.toml` sits beside the bun lockfile, remove the `bunfig.toml`, or replace the bun lockfile with an npm lockfile.
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claude-code
overview
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overview
[`CLAUDE.md`](/docs/en/memory) is a markdown file you add to your project root that Claude Code reads at the start of every session. Use it to set coding standards, architectur
[`CLAUDE.md`](/docs/en/memory) is a markdown file you add to your project root that Claude Code reads at the start of every session. Use it to set coding standards, architectur
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claude-code
memory
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memory
> Give Claude persistent instructions with CLAUDE.md files, and let Claude accumulate learnings automatically with auto memory.
> Give Claude persistent instructions with CLAUDE.md or AGENTS.md files, and let Claude accumulate learnings automatically with auto memory.
* **CLAUDE.md files**: instructions you write to give Claude persistent context
* **CLAUDE.md files**: instructions you write to give Claude persistent context. Claude can also read a repository's [`AGENTS.md` files](#agents-md), on their own or alongside CLAU
* [Use an existing AGENTS.md](#agents-md) as your project instructions, on its own or alongside CLAUDE.md
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claude-code
how-claude-code-works
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how-claude-code-works
* **Your [CLAUDE.md](/docs/en/memory).** A markdown file where you store project-specific instructions, conventions, and context that Claude should know every session.
* **Your [CLAUDE.md](/docs/en/memory).** A markdown file where you store project-specific instructions, conventions, and context that Claude should know every session. If your repo
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claude-code
hooks
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hooks
This event doesn't fire when Claude [reads `AGENTS.md` directly](/docs/en/memory#agents-md) through the **Project instructions** setting. It does fire when a `CLAUDE.md` imports yo
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claude-code
glossary
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glossary
### AGENTS.md
A markdown file of project instructions you write for AI coding agents. If your repository has one and no [CLAUDE.md](#claude-md), Claude reads it as your project instructions with
Learn more: [AGENTS.md](/docs/en/memory#agents-md)
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claude-code
feature-availability
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feature-availability
Three of these have provider-specific differences:
These have provider-specific differences:
* **CLAUDE.md memory**: `CLAUDE.md` files load on every provider. Reading [`AGENTS.md` files](/docs/en/memory#agents-md) as project instructions also requires a session that [fetch
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claude-code
env-vars
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claude-codechanged
env-vars
* Have Claude Code [read `AGENTS.md` files](/docs/en/memory#agents-md) as project instructions; it loads `CLAUDE.md` files only
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claude-code
corporate-launcher
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corporate-launcher
A launcher that wraps the `claude` command on your `PATH` can't reach these processes, because they start from the binary's direct path without looking up `claude`.
A launcher that wraps the `claude` command on your `PATH` can't reach the background service or the sessions it hosts, because they start from the binary's direct path without look
* A session you start yourself in a terminal, which runs however you invoked it. To cover these sessions, put a script named `claude` in a directory earlier on `PATH` that runs you
* A session you start yourself in a terminal, which runs however you invoked it. To cover these sessions, put a script named `claude` in a directory earlier on `PATH` that runs you
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claude-code
context-window
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context-window
* **Before you type anything**: CLAUDE.md, auto memory, MCP tool names, and skill descriptions all load into context. Your own setup may add more here, like an [output style](/docs
* **Before you type anything**: CLAUDE.md, auto memory, MCP tool names, and skill descriptions all load into context. [AGENTS.md files](/docs/en/memory#agents-md) can load too, on
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claude-code
claude-directory
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claude-directory
tips: ['Target under 200 lines. Longer files still load in full but may reduce adherence', <>CLAUDE.md loads into every session. If something only matters for specific task
tips: ['Target under 200 lines. Longer files still load in full but may reduce adherence', <>CLAUDE.md loads into every session. If something only matters for specific task
Most users only edit `CLAUDE.md` and `settings.json`. The rest of the directory is optional: add skills, rules, or subagents as you need them.
Most users only edit `CLAUDE.md` and `settings.json`. If your repository already has an `AGENTS.md` for other coding agents, Claude Code [can read that](/docs/en/memory#agents-md)
| File | Location | Purpose
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claude-docs
cowork/changelog
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claude-docschanged
cowork/changelog
* Added iOS Simulator and Android Emulator buttons to the session titlebar when the agent launches an app on a device, so the pane is one click to reopen.
* Added an iOS Simulator button to the session titlebar when the agent launches an app in the simulator, so the pane is one click to reopen.
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claude-code
changelog
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changelog
<Update label="2.1.277" description="September 18, 2026">
* Added AGENTS.md support: in a project with no CLAUDE.md, Claude Code reads AGENTS.md instead; change it under "Project instructions" in `/config` (not yet on Bedrock, Vertex or
* Added `CLAUDE_GATEWAY_PROXY_IS_EGRESS_BOUNDARY=1` for Claude apps gateways whose only egress is a forward proxy: every outbound request hands the proxy the hostname instead of
* Added an optional `headers:` map on Claude apps gateway upstreams, to send static headers to a proxy you run in front of a provider
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claude-code
settings-reference
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settings-reference
Turn off the [claude.ai MCP connectors](/docs/en/mcp#use-mcp-servers-from-claude-ai) [Claude Code fetches itself](/docs/en/mcp#how-connectors-reach-claude-code), so it neither fetc
Turn off the [claude.ai MCP connectors](/docs/en/mcp#use-mcp-servers-from-claude-ai) [Claude Code fetches itself](/docs/en/mcp#how-connectors-reach-claude-code), so it neither fetc
Servers you pass explicitly with `--mcp-config` are unaffected. To block individual connectors instead of all of them, use [`deniedMcpServers`](#deniedmcpservers). See [Disable cla
Servers you pass explicitly with `--mcp-config` are unaffected. To block individual connectors instead of all of them, use [`deniedMcpServers`](#deniedmcpservers). See [Disable cla
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claude-code
headless
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headless
* To change a setting, pass `key=value` to `/config`, for example `/config thinking=false`. Requires Claude Code v2.1.181 or later.
* To change a setting, pass `key=value` to `/config`, for example `/config thinking=false`.
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claude-code
commands
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commands
| `/config [key=value ...]` | Open the [Settings](/docs/en/settings) interface to adjust theme, m
| `/config [key=value ...]` | Open the [Settings](/docs/en/settings) interface to adjust theme, m
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claude-code
cloud-environments
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cloud-environments
Commits that Claude creates in a cloud session include a `Claude-Session: <url>` git trailer, and PR bodies include the session URL on its own line. To omit the trailer and the PR-
Commits that Claude creates in a cloud session include a `Claude-Session: <url>` git trailer, and PR bodies include the session URL on its own line. To omit the trailer and the PR-
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claude-code
artifacts
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artifacts
Claude applies a built-in design skill when it builds an artifact, so pages get a deliberate palette, typography, and layout without extra prompting. Requires Claude Code v2.1.182
Claude applies a built-in design skill when it builds an artifact, so pages get a deliberate palette, typography, and layout without extra prompting. That skill also looks for an e
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claude-docs
third-party/claude-desktop/local-access
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third-party/claude-desktop/local-access
## Removable drives on Windows
Users can attach a folder on a removable drive, such as a USB stick or an SD card, and file tools work there. The sandbox does not mount removable drives, so shell commands cannot
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claude-docs
third-party/claude-desktop/local-access
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third-party/claude-desktop/local-access
| Value | Behavior
| ---------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------
| Unset | Unrestricted. Users can attach any folder they have OS-level access to, matching standard Claude Desktop.
| `["~/Documents/Claude", "/Volumes/Shared/Projects"]` | Users may attach only folders **inside** one of the listed roots.
| `[]` | No folders may be attached. The agent can still create files in its own sandbox scratch space, but cannot read or write the
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claude-code
tools-reference
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tools-reference
| Result | What Claude gets
| :------ | :-----------------------------------------------------------------------------------------------------------------------------------------------------------------------
| Valid | Inline up to roughly 30,000 characters by default; past that, the path of a file saved to the session directory and truncated past 64 MiB, plus a short preview from the
| Failure | Inline up to roughly 10,000 characters; past that, a head-and-tail excerpt of that size cut from the read-back window, with no file path
| Result | What Claude gets
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claude-code
hooks
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hooks
Hook output strings, including `additionalContext`, `systemMessage`, and plain stdout, are capped at 10,000 characters. Output that exceeds this limit is saved to a file and replac
A hook's `additionalContext`, `systemMessage`, and `initialUserMessage` strings, and its plain stdout, are capped at 10,000 characters:
* **Scope**: Claude Code measures each string on its own, even when several hooks run for the same event. For JSON output, each field is measured separately; plain stdout is measur
* **Over the limit**: Claude Code saves the output to a file in the session directory and replaces it with the file path and a preview of up to the first 2,000 characters. A large
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claude-docs
third-party/claude-desktop/mdm
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third-party/claude-desktop/mdm
| **Workspace** | Which of Cowork, Code, and Chat are available<br />Allowed egress hosts for the sandbox<br />Disabled built-in tools<br />Allowed workspace folders
| **Capabilities** | Which of Cowork, Code, and Chat are available<br />Allowed egress hosts for the sandbox<br />Disabled built-in tools<br />Allowed workspace folders
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claude-docs
third-party/claude-desktop/browser
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third-party/claude-desktop/browser
The built-in browser is off by default. Set [`builtinBrowserEnabled`](/docs/third-party/claude-desktop/configuration#builtinbrowserenabled) to `true` in your managed configuration,
The built-in browser is off by default. Set [`builtinBrowserEnabled`](/docs/third-party/claude-desktop/configuration#builtinbrowserenabled) to `true` in your managed configuration,
If your devices use a [bootstrap server](/docs/third-party/claude-desktop/bootstrap), set the key in the configuration the server returns, because a value set only on the device le
If your devices use a [bootstrap server](/docs/third-party/claude-desktop/bootstrap), set the key in the configuration the server returns, because a value set only on the device le
If you manage the app from the [Enterprise Admin Console](/docs/third-party/claude-desktop/admin-console), you control the built-in browser from the console instead of with these k
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claude-docs
third-party/claude-desktop/admin-console
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third-party/claude-desktop/admin-console
| **Workspace** | Whether Chat, Cowork, and Code are each available, the folders and network hosts the app may use, permission modes and built-in tool policy, whether use
| **Capabilities** | Whether Chat, Cowork, and Code are each available, the folders and network hosts the app may use, permission modes and built-in tool policy, the [built-
To turn on the built-in browser, open the **Capabilities** page in **Organization settings**, outside the **Desktop 3P** section, and turn on the **Built-in browser** switch under
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claude-docs
claude-science/multiple-computers
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claude-science/multiple-computers
Claude Science keeps the work from each sign-in in its own folder on your computer. When you sign in to a different organization or personal account on that computer (for example,
Claude Science keeps the work from each sign-in in its own folder on your computer. When you sign in to a different organization or personal account on that computer (for example,
The access happens entirely on your computer and uploads nothing. Credentials such as API keys and connector sign-ins aren't copied or moved and stay in their original folder. On T
The access happens entirely on your computer and uploads nothing. Credentials such as API keys and connector sign-ins aren't copied or moved and stay in their original folder. On T
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claude-docs
claude-science/get-started
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claude-science/get-started
* Projects you created under another sign-in on this computer don't appear automatically, for example, after you move from a personal plan to your organization's Team plan: your ea
* Projects you created under another sign-in on this computer don't appear automatically, for example, after you move from a personal plan to your organization's Team plan: your ea
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claude-docs
claude-science/changelog
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claude-science/changelog
<Update label="0.1.50" description="September 17, 2026">
* Tables in Markdown files now show as a compact grid; a long table keeps its header row in view, and row labels stay in view when you scroll sideways
* Tabs in the right pane can be reordered by dragging, or with Ctrl/Cmd+Shift+Left/Right
* Pasted images are now saved to your uploads, so Claude can keep working with them later in the conversation
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Nothing on this page matches that. Press Enter to search every page of the ledger.