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
820pages tracked
773 changed this week · last read 23 Oct 2026
Claude Code CLI
228pages tracked
147 changed this week · last read 23 Oct 2026
Claude Documentation
280pages tracked
77 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
4 Sep 2026
213 pages
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claude-code
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<span>Releases <a href="/docs/docs/en/changelog#2-1-202">v2.1.202 → v2.1.206</a></span>
<span>Releases <a href="/docs/en/changelog#2-1-202">v2.1.202 → v2.1.206</a></span>
<a className="digest-feature-link" href="/docs/docs/en/desktop#browse-external-sites">Browse external sites</a>
<a className="digest-feature-link" href="/docs/en/desktop#browse-external-sites">Browse external sites</a>
<a className="digest-feature-link" href="/docs/docs/en/commands#all-commands">All commands</a>
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claude-code
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claude-codechanged
whats-new/2026-w27
<span>Releases <a href="/docs/docs/en/changelog#2-1-195">v2.1.195 → v2.1.201</a></span>
<span>Releases <a href="/docs/en/changelog#2-1-195">v2.1.195 → v2.1.201</a></span>
<a className="digest-feature-link" href="/docs/docs/en/model-config#available-models">Model configuration</a>
<a className="digest-feature-link" href="/docs/en/model-config#available-models">Model configuration</a>
<a className="digest-feature-link" href="/docs/docs/en/chrome">Use Claude Code with Chrome</a>
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claude-code
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<span>Releases <a href="/docs/docs/en/changelog#2-1-185">v2.1.185 → v2.1.193</a></span>
<span>Releases <a href="/docs/en/changelog#2-1-185">v2.1.185 → v2.1.193</a></span>
<a className="digest-feature-link" href="/docs/docs/en/mcp#authenticate-from-the-command-line">Authenticate from the command line</a>
<a className="digest-feature-link" href="/docs/en/mcp#authenticate-from-the-command-line">Authenticate from the command line</a>
<a className="digest-feature-link" href="/docs/docs/en/interactive-mode#shell-mode-with-prefix">Shell mode with the ! prefix</a>
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claude-code
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<span>Releases <a href="/docs/docs/en/changelog#2-1-178">v2.1.178 → v2.1.183</a></span>
<span>Releases <a href="/docs/en/changelog#2-1-178">v2.1.178 → v2.1.183</a></span>
<a className="digest-feature-link" href="/docs/docs/en/artifacts#create-an-artifact">Create an artifact</a>
<a className="digest-feature-link" href="/docs/en/artifacts#create-an-artifact">Create an artifact</a>
<a className="digest-feature-link" href="/docs/docs/en/permissions#match-by-input-parameter">Match by input parameter</a>
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claude-code
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<span>Releases <a href="/docs/docs/en/changelog#2-1-166">v2.1.166 → v2.1.176</a></span>
<span>Releases <a href="/docs/en/changelog#2-1-166">v2.1.166 → v2.1.176</a></span>
<a className="digest-feature-link" href="/docs/docs/en/commands#all-commands">Commands reference</a>
<a className="digest-feature-link" href="/docs/en/commands#all-commands">Commands reference</a>
<a className="digest-feature-link" href="/docs/docs/en/sub-agents#let-subagents-spawn-their-own-subagents">Spawn nested subagents</a>
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<span>Releases <a href="/docs/docs/en/changelog#2-1-158">v2.1.158 → v2.1.165</a></span>
<span>Releases <a href="/docs/en/changelog#2-1-158">v2.1.158 → v2.1.165</a></span>
<a className="digest-feature-link" href="/docs/docs/en/permission-modes#enable-auto-mode-on-bedrock-agent-platform-or-foundry">Auto mode on third-party providers</a>
<a className="digest-feature-link" href="/docs/en/permission-modes#enable-auto-mode-on-bedrock-agent-platform-or-foundry">Auto mode on third-party providers</a>
<a className="digest-feature-link" href="/docs/docs/en/permission-modes#protected-paths">Protected paths</a>
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<span>Releases <a href="/docs/docs/en/changelog#2-1-150">v2.1.150 → v2.1.157</a></span>
<span>Releases <a href="/docs/en/changelog#2-1-150">v2.1.150 → v2.1.157</a></span>
<a className="digest-feature-link" href="/docs/docs/en/model-config#available-models">Model configuration</a>
<a className="digest-feature-link" href="/docs/en/model-config#available-models">Model configuration</a>
<a className="digest-feature-link" href="/docs/docs/en/workflows">Dynamic workflows</a>
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claude-code
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<span>Releases <a href="/docs/docs/en/changelog#2-1-143">v2.1.143 → v2.1.149</a></span>
<span>Releases <a href="/docs/en/changelog#2-1-143">v2.1.143 → v2.1.149</a></span>
<a className="digest-feature-link" href="/docs/docs/en/permission-modes#eliminate-prompts-with-auto-mode">Auto mode requirements</a>
<a className="digest-feature-link" href="/docs/en/permission-modes#eliminate-prompts-with-auto-mode">Auto mode requirements</a>
<div><a href="/docs/docs/en/costs#track-your-costs"><code>/usage</code></a> now shows a per-category breakdown of what's driving your plan limits, attributing recent usage to s
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<span>Releases <a href="/docs/docs/en/changelog#2-1-139">v2.1.139 → v2.1.142</a></span>
<span>Releases <a href="/docs/en/changelog#2-1-139">v2.1.139 → v2.1.142</a></span>
<a className="digest-feature-link" href="/docs/docs/en/agent-view">Agent view</a>
<a className="digest-feature-link" href="/docs/en/agent-view">Agent view</a>
<a className="digest-feature-link" href="/docs/docs/en/goal">Goals</a>
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claude-code
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<span>Releases <a href="/docs/docs/en/changelog#2-1-128">v2.1.128 → v2.1.136</a></span>
<span>Releases <a href="/docs/en/changelog#2-1-128">v2.1.128 → v2.1.136</a></span>
<a className="digest-feature-link" href="/docs/docs/en/plugins">Plugins guide</a>
<a className="digest-feature-link" href="/docs/en/plugins">Plugins guide</a>
<a className="digest-feature-link" href="/docs/docs/en/interactive-mode#command-history">Interactive mode: command history</a>
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<span>Releases <a href="/docs/docs/en/changelog#2-1-120">v2.1.120 → v2.1.126</a></span>
<span>Releases <a href="/docs/en/changelog#2-1-120">v2.1.120 → v2.1.126</a></span>
<a className="digest-feature-link" href="/docs/docs/en/cli-reference#cli-commands">CLI reference</a>
<a className="digest-feature-link" href="/docs/en/cli-reference#cli-commands">CLI reference</a>
<a className="digest-feature-link" href="/docs/docs/en/cli-reference">CLI reference</a>
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<span>Releases <a href="/docs/docs/en/changelog#2-1-114">v2.1.114 → v2.1.119</a></span>
<span>Releases <a href="/docs/en/changelog#2-1-114">v2.1.114 → v2.1.119</a></span>
<a className="digest-feature-link" href="/docs/docs/en/ultrareview">Ultrareview guide</a>
<a className="digest-feature-link" href="/docs/en/ultrareview">Ultrareview guide</a>
<a className="digest-feature-link" href="/docs/docs/en/interactive-mode#session-recap">Interactive mode: session recap</a>
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<span>Releases <a href="/docs/docs/en/changelog#2-1-105">v2.1.105 → v2.1.113</a></span>
<span>Releases <a href="/docs/en/changelog#2-1-105">v2.1.105 → v2.1.113</a></span>
<a className="digest-feature-link" href="/docs/docs/en/model-config#adjust-effort-level">Model config: effort levels</a>
<a className="digest-feature-link" href="/docs/en/model-config#adjust-effort-level">Model config: effort levels</a>
<a className="digest-feature-link" href="/docs/docs/en/routines">Routines guide</a>
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<span>Releases <a href="/docs/docs/en/changelog#2-1-92">v2.1.92 → v2.1.101</a></span>
<span>Releases <a href="/docs/en/changelog#2-1-92">v2.1.92 → v2.1.101</a></span>
<a className="digest-feature-link" href="/docs/docs/en/ultraplan">Ultraplan guide</a>
<a className="digest-feature-link" href="/docs/en/ultraplan">Ultraplan guide</a>
<a className="digest-feature-link" href="/docs/docs/en/tools-reference#monitor-tool">Monitor tool reference</a>
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<span>Releases <a href="/docs/docs/en/changelog#2-1-86">v2.1.86 → v2.1.91</a></span>
<span>Releases <a href="/docs/en/changelog#2-1-86">v2.1.86 → v2.1.91</a></span>
<a className="digest-feature-link" href="/docs/docs/en/computer-use">Computer use guide</a>
<a className="digest-feature-link" href="/docs/en/computer-use">Computer use guide</a>
<a className="digest-feature-link" href="/docs/docs/en/commands">Commands reference</a>
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<span>Releases <a href="/docs/docs/en/changelog#2-1-83">v2.1.83 → v2.1.85</a></span>
<span>Releases <a href="/docs/en/changelog#2-1-83">v2.1.83 → v2.1.85</a></span>
<a className="digest-feature-link" href="/docs/docs/en/permission-modes">Permission modes guide</a>
<a className="digest-feature-link" href="/docs/en/permission-modes">Permission modes guide</a>
<a className="digest-feature-link" href="/docs/docs/en/desktop#let-claude-use-your-computer">Computer use guide</a>
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headless
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### Turn off permission prompts in unattended runs
Pass `--permission-prompts none` when nobody is available to answer permission prompts, for example in a scheduled job. The flag matters most when your run has a permission host: a
With the flag, your run doesn't consult the host or wait on it. Anything that would prompt is denied unless a `PermissionRequest` hook allows it, Claude is told that nobody can app
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| `--permission-prompts` | Set who answers permission prompts in print mode. With the default `host`, Claude Code sends them to the Agent SDK host or the `
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Releases [v2.1.234 → v2.1.239](/docs/en/changelog#2-1-234)
Releases [v2.1.234 → v2.1.239](/docs/en/changelog.md#2-1-234)
[Where artifacts are available](/docs/en/artifacts#availability)
[Where artifacts are available](/docs/en/artifacts.md#availability)
[Built-in output styles](/docs/en/output-styles#built-in-output-styles)
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Releases [v2.1.207 → v2.1.212](/docs/en/changelog#2-1-207)
Releases [v2.1.207 → v2.1.212](/docs/en/changelog.md#2-1-207)
[Pull live data with MCP connectors](/docs/en/artifacts#pull-live-data-with-mcp-connectors)
[Pull live data with MCP connectors](/docs/en/artifacts.md#pull-live-data-with-mcp-connectors)
[Turn on screen reader mode](/docs/en/accessibility#turn-on-screen-reader-mode)
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whats-new/2026-w28
Releases [v2.1.202 → v2.1.206](/docs/en/changelog#2-1-202)
Releases [v2.1.202 → v2.1.206](/docs/en/changelog.md#2-1-202)
[Browse external sites](/docs/en/desktop#browse-external-sites)
[Browse external sites](/docs/en/desktop.md#browse-external-sites)
[All commands](/docs/en/commands#all-commands)
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Releases [v2.1.195 → v2.1.201](/docs/en/changelog#2-1-195)
Releases [v2.1.195 → v2.1.201](/docs/en/changelog.md#2-1-195)
[Model configuration](/docs/en/model-config#available-models)
[Model configuration](/docs/en/model-config.md#available-models)
[Use Claude Code with Chrome](/docs/en/chrome)
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Releases [v2.1.185 → v2.1.193](/docs/en/changelog#2-1-185)
Releases [v2.1.185 → v2.1.193](/docs/en/changelog.md#2-1-185)
[Authenticate from the command line](/docs/en/mcp#authenticate-from-the-command-line)
[Authenticate from the command line](/docs/en/mcp.md#authenticate-from-the-command-line)
[Shell mode with the ! prefix](/docs/en/interactive-mode#shell-mode-with-prefix)
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whats-new/2026-w25
Releases [v2.1.178 → v2.1.183](/docs/en/changelog#2-1-178)
Releases [v2.1.178 → v2.1.183](/docs/en/changelog.md#2-1-178)
[Create an artifact](/docs/en/artifacts#create-an-artifact)
[Create an artifact](/docs/en/artifacts.md#create-an-artifact)
[Match by input parameter](/docs/en/permissions#match-by-input-parameter)
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whats-new/2026-w24
Releases [v2.1.166 → v2.1.176](/docs/en/changelog#2-1-166)
Releases [v2.1.166 → v2.1.176](/docs/en/changelog.md#2-1-166)
[Commands reference](/docs/en/commands#all-commands)
[Commands reference](/docs/en/commands.md#all-commands)
[Spawn nested subagents](/docs/en/sub-agents#let-subagents-spawn-their-own-subagents)
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whats-new/2026-w15
Releases [v2.1.92 → v2.1.101](/docs/en/changelog#2-1-92)
Releases [v2.1.92 → v2.1.101](/docs/en/changelog.md#2-1-92)
[Monitor tool reference](/docs/en/tools-reference#monitor-tool)
[Monitor tool reference](/docs/en/tools-reference.md#monitor-tool)
[Auto-fix pull requests](/docs/en/claude-code-on-the-web#auto-fix-pull-requests)
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<div className="digest-meta">
<span>Releases <a href="/docs/en/changelog#2-1-234">v2.1.234 → v2.1.239</a></span>
<span>3 features · August 17–21</span>
</div>
Releases [v2.1.234 → v2.1.239](/docs/en/changelog#2-1-234)
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<div className="digest-meta">
<span>Releases <a href="/docs/en/changelog#2-1-207">v2.1.207 → v2.1.212</a></span>
<span>2 features · July 13–17</span>
</div>
Releases [v2.1.207 → v2.1.212](/docs/en/changelog#2-1-207)
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<div className="digest-meta">
<span>Releases <a href="/docs/en/changelog#2-1-202">v2.1.202 → v2.1.206</a></span>
<span>2 features · July 6–10</span>
</div>
Releases [v2.1.202 → v2.1.206](/docs/en/changelog#2-1-202)
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<div className="digest-meta">
<span>Releases <a href="/docs/en/changelog#2-1-195">v2.1.195 → v2.1.201</a></span>
<span>5 features · June 29 – July 3</span>
</div>
Releases [v2.1.195 → v2.1.201](/docs/en/changelog#2-1-195)
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<div className="digest-meta">
<span>Releases <a href="/docs/en/changelog#2-1-185">v2.1.185 → v2.1.193</a></span>
<span>2 features · June 22–26</span>
</div>
Releases [v2.1.185 → v2.1.193](/docs/en/changelog#2-1-185)
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<div className="digest-meta">
<span>Releases <a href="/docs/en/changelog#2-1-178">v2.1.178 → v2.1.183</a></span>
<span>3 features · June 15–19</span>
</div>
Releases [v2.1.178 → v2.1.183](/docs/en/changelog#2-1-178)
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<div className="digest-meta">
<span>Releases <a href="/docs/en/changelog#2-1-166">v2.1.166 → v2.1.176</a></span>
<span>3 features · June 8–12</span>
</div>
Releases [v2.1.166 → v2.1.176](/docs/en/changelog#2-1-166)
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<div className="digest-meta">
<span>Releases <a href="/docs/en/changelog#2-1-92">v2.1.92 → v2.1.101</a></span>
<span>4 features · April 6–10</span>
</div>
Releases [v2.1.92 → v2.1.101](/docs/en/changelog#2-1-92)
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server-managed-settings
Delivered payloads parse tolerantly with the same rules as the other managed sources. When part of a payload fails schema validation, Claude Code surfaces a validation error and ap
When part of a payload fails schema validation, Claude Code surfaces a validation error and applies every remaining valid setting; [Invalid entries in managed settings](/docs/en/ma
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monitoring-usage
When Claude Code can't safely determine the retention period, it pauses the sweep and emits the event with `result` set to `"skipped"` and a `skip_reason`. When [managed settings](
When Claude Code can't safely determine the retention period, it pauses the sweep and emits the event with `result` set to `"skipped"` and a `skip_reason`. When [managed settings](
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claude-code
managed-settings
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claude-codechanged
managed-settings
* **The line is missing**: Claude Code found no managed source that delivers a policy key. If you deployed a managed settings file, check that it sits at the path for the OS, that
* **The line is missing**: Claude Code found no managed source that delivers a policy key.
If you deployed a managed settings file, check that it sits at the path for the OS and that it contains a [policy key](#how-claude-code-combines-managed-sources) rather than only
When a managed settings file, MDM profile, registry value, or server-managed payload fails schema validation, Claude Code first skips the individual entries it can repair, such as
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claude-code
hooks
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claude-codechanged
hooks
PermissionRequest hooks receive `tool_name` and `tool_input` fields like PreToolUse hooks, but without `tool_use_id`. An optional `permission_suggestions` array contains the "alway
PermissionRequest hooks receive `tool_name` and `tool_input` fields like PreToolUse hooks, but without `tool_use_id`. An optional `permission_suggestions` array contains the [permi
The permission dialog builds its "always allow" options from these suggestions, but the array isn't an exact list of the options you see. The dialog can withhold an option whose su
A hook can echo one of the `permission_suggestions` it received as its own `updatedPermissions` output, which is equivalent to the user selecting that "always allow" option in the
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claude-code
errors
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claude-codechanged
errors
| `Managed settings document could not be parsed as a JSON object; none of its settings are in effect. Fix or remove it.`
| `Managed settings drop-in directory could not be read`
<h3 id="managed-settings-document-could-not-be-parsed">
Managed settings document could not be parsed
</h3>
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claude-code
changelog
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changelog
<Update label="2.1.260" description="September 3, 2026">
* Added a diff panel that opens beside the conversation in fullscreen mode and shows your uncommitted changes as Claude edits; toggle it with `/diff`
* Added a likely cause for prompt-cache misses (e.g. tool definitions or system prompt changed, idle past the TTL) to `/cost` and the status line's `prompt_cache` field
* Added `/reload-plugins` to headless sessions, so it appears in the Claude Code Desktop and SDK command lists
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3 Sep 2026
55 pages
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api
managed-agents/tools
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apichanged
managed-agents/tools
ant beta:agents create < agent.yaml
ant apply agent.md
<File filename="agent.yaml">
```yaml
<File filename="agent.md">
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api
managed-agents/skills
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managed-agents/skills
ant beta:agents create < agent.yaml
ant apply agent.md
<File filename="agent.yaml">
```yaml
<File filename="agent.md">
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api
managed-agents/self-hosted-sandboxes
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managed-agents/self-hosted-sandboxes
ant beta:environments create < environment.yaml
ant apply environment.yaml
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api
managed-agents/quickstart
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managed-agents/quickstart
AGENT_ID=$(ant beta:agents create --transform id --raw-output < coding-assistant.agent.yaml)
echo "Agent ID: $AGENT_ID"
ant apply coding-assistant.md
<File filename="coding-assistant.agent.yaml">
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api
managed-agents/permission-policies
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managed-agents/permission-policies
ant beta:agents create < agent.yaml
ant apply agent.md
<File filename="agent.yaml">
```yaml
<File filename="agent.md">
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api
managed-agents/multiagent-orchestration
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managed-agents/multiagent-orchestration
ant beta:agents create < coordinator.agent.yaml
ant apply engineering-lead.md reviewer.md test-writer.md
<File filename="coordinator.agent.yaml">
```yaml
<File filename="engineering-lead.md">
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api
managed-agents/migration
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apichanged
managed-agents/migration
{ read -r _ agent_id; read -r _ agent_version; } < <(ant beta:agents create \
--transform '{id,version}' --format yaml < task-runner.agent.yaml)
ant apply agent.md
> /dev/null
> /dev/null
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api
managed-agents/mcp-connector
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managed-agents/mcp-connector
AGENT_ID=$(ant beta:agents create --transform id --raw-output < github-assistant.agent.yaml)
ant apply github-assistant.md
<File filename="github-assistant.agent.yaml">
```yaml
<File filename="github-assistant.md">
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api
managed-agents/github
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apichanged
managed-agents/github
AGENT_ID=$(ant beta:agents create --transform id --raw-output < code-reviewer.agent.yaml)
ant apply code-reviewer.md
<File filename="code-reviewer.agent.yaml">
```yaml
<File filename="code-reviewer.md">
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api
managed-agents/environments
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managed-agents/environments
ant beta:environments create < python-dev.environment.yaml
ant apply environment.yaml
<File filename="python-dev.environment.yaml">
<File filename="environment.yaml">
ant beta:environments create < environment.yaml
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api
managed-agents/agent-setup
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managed-agents/agent-setup
agent=$(ant beta:agents create --format json < coding-assistant.agent.yaml)
AGENT_ID=$(jq -r '.id' <<< "$agent")
ant apply coding-assistant.md
<File filename="coding-assistant.agent.yaml">
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api
manage-claude/authentication
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manage-claude/authentication
| [API key](https://platform.claude.com/docs/en/manage-claude/authentication#api-keys) | Static `sk-ant-api...` secret in the `x-api-key` h
| [API key](https://platform.claude.com/docs/en/manage-claude/authentication#api-keys) | Static `sk-ant-api...` secret sent as a bearer tok
API keys are static secrets that you generate in the Claude Console and send on every request in the `x-api-key` header.
API keys are static secrets that you generate in the Claude Console and send on every request as a bearer token in the `Authorization` header.
* **Use the key:** Set the `x-api-key` header on direct HTTP requests, or set the `ANTHROPIC_API_KEY` environment variable and the [client SDKs](https://platform.claude.com/docs/en
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api
manage-claude/analytics-api
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apichanged
manage-claude/analytics-api
**Engagement and adoption endpoints** (user activity, summaries, projects, skills, connectors) return a per-day snapshot for the date you specify. Data for a given day is aggregate
**Engagement and adoption endpoints** (user activity, summaries, projects, skills, connectors) return a per-day snapshot for the date you specify. Data for a given day is typically
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api
cli-sdks-libraries/cli/scripting
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cli-sdks-libraries/cli/scripting
You can use the CLI to version control API resources such as skills, agents, environments, or deployments as YAML files in your repository and keep them in sync with the Claude API
To keep agents, environments, and other Claude Managed Agents resources as files in your repository, see [Manage resources as code with ant apply](https://platform.claude.com/docs/
<Note>
For more information on these resources, see [Managed Agents](https://platform.claude.com/docs/en/managed-agents/overview).
</Note>
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api
api/overview
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apichanged
api/overview
| `x-api-key` | Your API key from Console
| `Authorization` | `Bearer <token>`, where `<token>` is a short-lived access token obtained from `POST /v1/oauth/token` through [Workload Identity Federation](https://pla
| `Authorization` | `Bearer <token>`, where `<token>` is your API key or a short-lived access token obtained from `POST /v1/oauth/token` through [Workload Identity Federat
| `x-api-key` | Your API key from Console. Legacy fallback for `Authorization`, still supported
* Automatic header management (`x-api-key`, `anthropic-version`, `content-type`)
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claude-docs
government/changelog
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government/changelog
<Update label="2026.09.03.1">
* Fixed Admin Console pages sometimes loading part light and part dark when your computer is set to dark mode, which made some text hard to read.
* Improved the Admin Console for tenant admins who manage several organizations: every page shows which organization or tenant your changes apply to.
</Update>
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claude-code
sub-agents
±changed
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sub-agents
When something [cuts off a subagent's response mid-stream](/docs/en/errors#the-response-above-may-be-incomplete), and the partial response contains text but no tool calls, Claude C
As of v2.1.191, a subagent you stopped yourself, with `x` in `/tasks` or an SDK `stop_task` request, doesn't auto-resume. The `SendMessage` call returns a refusal telling Claude th
A subagent you stopped yourself, with `x` in `/tasks` or an SDK `stop_task` request, doesn't auto-resume. If Claude sends it a message, the message is refused and Claude is told th
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claude-code
settings-reference
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settings-reference
| Key | Description
| :---------------------------------------------------------------------------------------------- | :-------------------------------------------------------------------------------
| [`advisorModel`](#advisormodel) | Pick which model answers when Claude asks the [advisor tool](/docs/en/advisor)
| [`agent`](#agent) | Start every session as a named [subagent](/docs/en/sub-agents) with its prompt,
| [`agentPushNotifEnabled`](#agentpushnotifenabled) | Let Claude send a [push notification to your phone](/docs/en/remote-control#mobi
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claude-code
security
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security
* **Working directory boundary**: In Manual mode, Claude Code can only write to the folder where it was started and its subfolders, and can't modify files in parent directories wit
* **Working directory boundary**: In Manual mode, Claude Code can only write to the folder where it was started and its subfolders, and can't modify files in parent directories wit
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claude-code
sandboxing
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sandboxing
When a command can be sandboxed, Claude Code runs it inside the sandbox and approves it automatically, without asking your permission. Commands that cannot be sandboxed, such as th
When a command can be sandboxed, Claude Code runs it inside the sandbox and approves it automatically, without asking your permission. Commands that cannot be sandboxed, such as th
The retried command runs outside the sandbox, so it goes through the regular permission flow: in Manual mode you get a confirmation prompt; in [auto mode](/docs/en/permission-modes
The retried command runs outside the sandbox, so it goes through the regular permission flow. In Manual mode you get a confirmation prompt. In [auto mode](/docs/en/permission-modes
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claude-code
permissions
±changed
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permissions
Claude Code recognizes a built-in set of Bash commands as read-only and runs them without a permission prompt in every mode. These include `ls`, `cat`, `echo`, `pwd`, `head`, `tail
Claude Code recognizes a built-in set of Bash commands as read-only and runs them without a permission prompt in every mode, except for a path that [`permissions.blockReadsOutsideW
Set [`permissions.blockReadsOutsideWorkingDirectories`](/docs/en/settings-reference#permissions-blockreadsoutsideworkingdirectories) to make the file tools refuse the paths it fenc
In [plan mode](/docs/en/permission-modes#analyze-before-you-edit-with-plan-mode), Claude Code skips this substitution. Without an ask rule, the built-in read-only commands still ru
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claude-code
permission-modes
±changed
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permission-modes
* Reads outside the working directories while [`permissions.blockReadsOutsideWorkingDirectories`](/docs/en/settings-reference#permissions-blockreadsoutsideworkingdirectories) is on
<h3 id="first-read-outside-the-working-directories">
The first read outside the working directories
</h3>
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claude-code
network-config
±changed
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network-config
When a watchdog aborts a stalled stream, Claude Code treats it as a mid-stream failure: depending on how far the response had got, it retries the request or ends the turn with an e
When a watchdog aborts a stalled stream, Claude Code treats the abort as a mid-stream failure, and what you see depends on how far the response had got. Claude Code retries the req
In a [non-interactive session](/docs/en/headless), and for a subagent's response in any session, Claude Code may first prompt Claude to continue the cut-off response; [that notice'
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claude-code
errors
±changed
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errors
* After Claude has completed a block of text or a tool call, or started one after finishing its thinking, but before Claude has finished the response, Claude Code keeps what Claude
* After Claude has completed a block of text or a tool call, or started one after finishing its thinking, but before Claude has finished the response, Claude Code keeps what Claude
In three cases, Claude Code handles the failure without showing this notice right away:
In four cases, Claude Code handles the failure without showing this notice right away:
* In a [subagent](/docs/en/sub-agents#api-errors-in-subagents), whether the session is interactive or not: when its cut-off response contains text but no tool calls, Claude Code pr
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api
build-with-claude/batch-processing
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build-with-claude/batch-processing
| `store` / `previous_thread_event_id` (Threads) | Threads are stateful; batch requests are not.
| `cache_hint` / `context_hint` | These routing hints apply to synchronous request scheduling only.
| `research_preview_2026_02: "active"` | Research preview mode is not available on the batch path.
Yes, the Message Batches API supports nearly all features available in the Messages API, including most beta features. A small number of parameters (`stream`, `speed`, `store`,
Yes, the Message Batches API supports nearly all features available in the Messages API, including most beta features. A small number of parameters (`stream`, `speed`, and `max
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claude-docs
connectors/mcp-tunnels/troubleshooting
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connectors/mcp-tunnels/troubleshooting
MCP tunnels are in research preview and are available to organizations on the Claude Enterprise plan by request. To request access, contact your Anthropic account team.
MCP tunnels are in research preview and are available to organizations on the Claude Enterprise plan by request. To request access, [submit the MCP tunnels interest form](https:/
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claude-docs
connectors/mcp-tunnels/setup
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connectors/mcp-tunnels/setup
MCP tunnels are in research preview and are available to organizations on the Claude Enterprise plan by request. To request access, contact your Anthropic account team.
MCP tunnels are in research preview and are available to organizations on the Claude Enterprise plan by request. To request access, [submit the MCP tunnels interest form](https:/
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claude-docs
connectors/mcp-tunnels/overview
±changed
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claude-docschanged
connectors/mcp-tunnels/overview
MCP tunnels are in research preview and are available to organizations on the Claude Enterprise plan by request. To request access, contact your Anthropic account team. The previ
MCP tunnels are in research preview and are available to organizations on the Claude Enterprise plan by request. To request access, [submit the MCP tunnels interest form](https:/
* A claude.ai organization on the Enterprise plan with MCP tunnels enabled. Contact your Anthropic account team to request access.
* A claude.ai organization on the Enterprise plan with MCP tunnels enabled. To request access, [submit the MCP tunnels interest form](https://claude.com/form/mcp-tunnels) or contac
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claude-docs
connectors/mcp-tunnels/oauth
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claude-docschanged
connectors/mcp-tunnels/oauth
MCP tunnels are in research preview and are available to organizations on the Claude Enterprise plan by request. To request access, contact your Anthropic account team.
MCP tunnels are in research preview and are available to organizations on the Claude Enterprise plan by request. To request access, [submit the MCP tunnels interest form](https:/
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claude-docs
claude-science/connectors-and-skills
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claude-science/connectors-and-skills
Your admin can also add skills for everyone in your organization from claude.ai. See [Organization skills](/docs/claude-science/admin-controls#organization-skills).
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claude-science/admin-controls
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claude-science/admin-controls
### Organization skills
Add skills for everyone in your organization in claude.ai, under **Organization settings** > **Skills** > **Organization skills**. Upload each skill as a .zip file. Members see it
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claude-docs
government/org-admin/analytics
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government/org-admin/analytics
The **By product** table breaks usage down by which Claude product it came from (for example, Claude Desktop or Claude Code), with the same request, token, and spend columns as the
The **By product** table breaks usage down by which Claude product it came from (for example, Claude Desktop or Claude Code), with the same request, token, and spend columns as the
The **Top users** table lists the most active users in the window with the same columns. The table starts with ten rows, and you can click **Show more** to reveal additional users.
The **Top users** table lists the most active users in the window with the same columns, and each user's figures combine their usage across all products. The table starts with ten
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agent-sdk/typescript
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agent-sdk/typescript
| `supportedCommands()` | Returns available slash commands. From Agent SDK v0.3.216 the list reflects mid-session command changes; see [`SDKCommandsChangedMessage`
| `supportedCommands()` | Returns available commands. From Agent SDK v0.3.216 the list reflects mid-session command changes; see [`SDKCommandsChangedMessage`](#sdk
Information about an available slash command.
Information about an available command.
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claude-code
agent-sdk/python
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agent-sdk/python
* `terminal_reason`: why the query loop ended, such as `"completed"`, `"max_turns"`, `"api_error"`, `"aborted_streaming"`, or `"aborted_tools"`. A value of `"aborted_streaming"` or
* `terminal_reason`: why the query loop ended, such as `"completed"`, `"max_turns"`, `"api_error"`, `"aborted_streaming"`, or `"aborted_tools"`. A value of `"aborted_streaming"` or
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claude-docs
government/org-admin/analytics
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government/org-admin/analytics
A control at the top switches between **Anthropic-managed tiers** and **Self-managed tiers**. The two are shown separately because their economics differ: managed-tier seats are pu
A control at the top switches between **Anthropic-managed tiers** and **Self-managed tiers**. The two are shown separately because their economics differ: managed-tier seats are pu
* Claude for Government does not currently offer a programmatic usage or analytics API. Usage data is available through this admin portal page. The [Compliance API](/docs/governmen
* Claude for Government does not currently offer a programmatic usage or analytics API. Usage data is available through this admin portal page. The [Compliance API](/docs/governmen
* To see how close each user is to their 5-hour and 7-day limits, use the **Usage** bars on the [Users](/docs/government/org-admin/users) page. The **Top users** table on this page
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claude-docs
government/org-admin/analytics
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government/org-admin/analytics
<Note>
The credit panel and burndown chart only appear in the **Self-managed tiers** view, and only once credit data is available for your organization. The runway estimate within the p
</Note>
> [!NOTE]
>
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claude-docs
third-party/claude-desktop/configuration-changelog
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third-party/claude-desktop/configuration-changelog
<Update label="v1.10628.0" description="2026-06-03">
<Update label="v1.10628.0" description="2026-06-02">
<Update label="v1.9659.0" description="2026-06-02">
<Update label="v1.9659.0" description="2026-05-27">
<Update label="v1.9255.0" description="2026-05-27">
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claude-docs
cowork/changelog
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cowork/changelog
<Update label="v1.44121.4" description="2026-09-03">
<Update label="v1.44121.4" description="2026-09-02">
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government/deploy-desktop/configure
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government/deploy-desktop/configure
| Web search is on for your organization, but a user does not have it, and under **Customize**, then **Connectors**, **Web Search** shows as not connected and **Connect** fails, wh
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claude-docs
government/config/settings
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government/config/settings
Once you turn web search on, each member's Claude Desktop picks it up the next time the app starts and shows it in the message box's **+** menu, under **Connectors**, as a **Web Se
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claude-docs
government/changelog
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government/changelog
<Update label="2026.09.02.1">
* Fixed the Sessions page under Account showing every app sign-in as "Desktop app": each sign-in now names its app, or reads "Claude app" when the app is not known.
* (breaking) Changed the "Telemetry endpoint" setting under Config > Compliance and telemetry to refuse an address products can't use, such as one with a password or a `?` query;
* (breaking) Changed the "Telemetry resource attributes" setting under Config > Compliance and telemetry to refuse a value longer than 255 bytes, where a space or an accented let
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api
release-notes/overview
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release-notes/overview
* Text generated by Claude Fable 5.1 and Claude Mythos 5.1 carries Anthropic's text watermark, and supported image and video files that Claude produces through the [code execution
* Text generated by Claude Fable 5.1 and Claude Mythos 5.1 carries Anthropic's text watermark, and supported image, video, and audio files that Claude produces through the [code ex
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api
models/fable-5-1/whats-new-fable-5-1
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models/fable-5-1/whats-new-fable-5-1
Text generated by Claude Fable 5.1 and Claude Mythos 5.1 carries Anthropic's statistical text watermark on every platform where the model is available. Supported image and video fi
Text generated by Claude Fable 5.1 and Claude Mythos 5.1 carries Anthropic's statistical text watermark on every platform where the model is available. Supported image, video, and
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api
build-with-claude/token-counting
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build-with-claude/token-counting
"model": "claude-sonnet-4-6",
"model": "claude-opus-5",
"type": "enabled",
"budget_tokens": 16000
"type": "adaptive"
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api
build-with-claude/task-budgets
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build-with-claude/task-budgets
**The countdown reflects tokens Claude has processed in the current agentic loop, not tokens you resend between turns.** If your client sends the full conversation history on eve
**The countdown reflects tokens Claude has processed in the current agentic loop, not tokens you resend between requests.** If your client sends the full conversation history on
### Worked example: budget counting across turns
The task budget counts what Claude **sees** (thinking, tool calls and results, and text), not what's in your request payload. In an agentic loop your client resends the full conver
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build-with-claude/preserved-thinking
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build-with-claude/preserved-thinking
## FAQ
<AccordionGroup>
<Accordion title="Do I need a new account to test the check?">
No. Send the `thinking-binding-controls-2026-08-01` beta header and set `thinking.block_binding.prefix_mismatch_behavior`. Setting the field opts that request into enforcement
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api
build-with-claude/files
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apichanged
build-with-claude/files
On the Claude API, supported image and video files that Claude produces with the code execution tool, including files created by skills, carry signed C2PA Content Credentials when
On the Claude API, supported image, video, and audio files that Claude produces with the code execution tool, including files created by skills, carry signed C2PA Content Credentia
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api
agents-and-tools/tool-use/code-execution-tool
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apichanged
agents-and-tools/tool-use/code-execution-tool
On the Claude API, supported image and video files that Claude produces in the code execution sandbox carry [C2PA](https://c2pa.org/) Content Credentials when you download them thr
On the Claude API, supported image, video, and audio files that Claude produces in the code execution sandbox carry [C2PA](https://c2pa.org/) Content Credentials when you download
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claude-code
sub-agents
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claude-codechanged
sub-agents
* **Model**: inherits from the main conversation, capped at Opus on the Claude API, so Explore never runs on a more expensive model than the one you already chose for the sessi
* **Model**: inherits from the main conversation, capped at Opus on the Claude API, so Explore never runs on a more expensive model than the one you already chose for the sessi
* **Model**: inherits from the main conversation, unless you [force `CLAUDE_CODE_SUBAGENT_MODEL` onto it](#choose-a-model)
* **Model**: inherits from the main conversation, unless you set `CLAUDE_CODE_SUBAGENT_MODEL` and [force it onto every subagent](#run-every-subagent-on-one-model)
* **Model**: the [`CLAUDE_CODE_SUBAGENT_MODEL`](#choose-a-model) model if you set one and nothing assigns a model another way, otherwise the main conversation's model; [Choose
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claude-code
model-config
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claude-codechanged
model-config
| Environment variable | Description
| -------------------------------- | -----------------------------------------------------------------------------------------------------------------------------------------------
| `ANTHROPIC_DEFAULT_FABLE_MODEL` | The model to use for `fable`, and the model ID Claude Code recognizes as a Fable model for [automatic model fallback](#automatic-model-fallback
| `ANTHROPIC_DEFAULT_OPUS_MODEL` | The model to use for `opus`, or for `opusplan` when Plan Mode is active.
| `ANTHROPIC_DEFAULT_SONNET_MODEL` | The model to use for `sonnet`, or for `opusplan` when Plan Mode is not active.
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claude-code
env-vars
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claude-codechanged
env-vars
| `CLAUDE_CODE_SUBAGENT_MODEL` | The default model for [subagents](/docs/en/sub-agents#choose-a-model), [agent team](/docs/en/agent-teams#specify-teammat
| `CLAUDE_CODE_SUBAGENT_MODEL_FORCE` | Set to `1` to force one model onto subagents, teammates, and workflow agents. [Choose a model](/docs/en/sub-agents#choos
| `CLAUDE_CODE_SUBAGENT_MODEL` | The default model for [subagents](/docs/en/sub-agents#choose-a-model), [agent team](/docs/en/agent-teams#specify-teammat
| `CLAUDE_CODE_SUBAGENT_MODEL_FORCE` | Set to `1` to force one model onto subagents, teammates, and workflow agents. [Run every subagent on one model](/docs/en
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claude-code
agent-teams
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claude-codechanged
agent-teams
[`CLAUDE_CODE_SUBAGENT_MODEL_FORCE`](/docs/en/sub-agents#choose-a-model) applies to teammates as well as to subagents.
[`CLAUDE_CODE_SUBAGENT_MODEL_FORCE`](/docs/en/sub-agents#run-every-subagent-on-one-model) applies to teammates as well as to subagents.
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claude-docs
third-party/claude-desktop/configuration-changelog
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claude-docschanged
third-party/claude-desktop/configuration-changelog
<Update label="v1.44121.4" description="2026-09-02">
No configuration changes in this release.
</Update>
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claude-docs
cowork/changelog
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claude-docschanged
cowork/changelog
<Update label="v1.44121.4" description="2026-09-03">
**General**
* No user-facing changes.
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claude-code
settings-reference
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claude-codechanged
settings-reference
Point the PR links Claude Code renders, in the footer badge and in tool-result summaries, at an internal code-review tool instead of `github.com`. Claude Code substitutes `{host}`,
Point the PR links Claude Code renders, in the footer badge and in tool-result summaries, at an internal code-review tool instead of `github.com`. Claude Code substitutes `{host}`,
* **Default**: unset, so links use the `gh`-reported URL
* **Default**: unset
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claude-code
self-hosted-environments-reference
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claude-codechanged
self-hosted-environments-reference
| `--kill-session-after-min <n>` | `SELF_HOSTED_RUNNER_MAX_LIFETIME_MS` | `0` | Terminate a session child once it has lived N minu
| `--kill-session-after-min <n>` | `SELF_HOSTED_RUNNER_MAX_LIFETIME_MS` | `0` | Terminate a session child once it has lived N minu
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claude-code
self-hosted-environments-deploy
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claude-codechanged
self-hosted-environments-deploy
`--kill-session-after-min` is a backstop for runaway sessions. The runner terminates any session that reaches the limit, even one someone is still using, so set the flag well above
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claude-code
plugins-reference
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claude-codechanged
plugins-reference
### plugin validate
Check a plugin or a marketplace for syntax and schema errors before publishing.
The command exits 0 when validation passes, 1 when it fails, and 2 when the validation run itself fails, such as when the path you pass is unreadable.
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claude-code
interactive-mode
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claude-codechanged
interactive-mode
The badge disappears once the pull request merges or closes. `Cmd+click` (macOS) or `Ctrl+click` (Windows/Linux) the link to open the pull request in your browser. How often Claude
* **Anthropic API with [feature-flag fetching](/docs/en/env-vars#features-that-need-feature-flag-fetching) on**: about every 90 seconds while you're active in the session, and less
* **Amazon Bedrock, Google Cloud's Agent Platform, Microsoft Foundry, Claude Platform on AWS, or feature-flag fetching off**: every 60 seconds
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claude-code
env-vars
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claude-codechanged
env-vars
| `CLAUDE_CODE_DISABLE_NONESSENTIAL_TRAFFIC` | Set to any non-empty value, such as `1`, to disable nonessential network traffic: auto-updates, telemetry, error reporti
| `CLAUDE_CODE_DISABLE_NONESSENTIAL_TRAFFIC` | Set to any non-empty value, such as `1`, to disable nonessential network traffic: auto-updates, telemetry, error reporti
* Have Claude Code refresh the [PR review status badge](/docs/en/interactive-mode#pr-review-status) less often while you're idle; Claude Code refreshes it every 60 seconds instead
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