HomeDocs changes
Documentation changes
What the docs quietly changed.
Anthropic's published documentation, fetched on a schedule and diffed against the last copy. Every edit dated, including the ones that never made a release note.
Last poll read all 4 cleanly: Claude Code CLI, Claude Developer Platform, Claude Documentation, Model Context Protocol. A date here is when this site noticed, not when Anthropic edited.
Claude Developer Platform
821pages tracked
774 changed this week · last read 23 Oct 2026
Claude Code CLI
228pages tracked
148 changed this week · last read 23 Oct 2026
Claude Documentation
280pages tracked
82 changed this week · last read 23 Oct 2026
Model Context Protocol
357pages tracked
171 changed this week · last read 23 Oct 2026
100 on this page
ReadSourcePageWhatLines
22 Sep 2026
274 pages
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api
agents-and-tools/tool-use/server-tools
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agents-and-tools/tool-use/server-tools
"model": "claude-opus-5",
"model": "claude-opus-5-5",
model: claude-opus-5
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model="claude-opus-5", max_tokens=1024, messages=messages, tools=tools
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model="claude-opus-5", max_tokens=1024, messages=messages, tools=tools
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"model": "claude-opus-5",
"model": "claude-opus-5-5",
--model claude-opus-5 \
--model claude-opus-5-5 \
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agents-and-tools/tool-use/define-tools
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agents-and-tools/tool-use/computer-use-tool
- claude-opus-5-5
- On the Claude API and Google Cloud, Claude Opus 5.5 supports computer use only through the `computer_toolset_20260801` toolset and returns an error for the earlier `computer_
- On Amazon Bedrock, Claude Opus 5.5 accepts the earlier `computer_20251124` tool version as Claude Opus 5 does.
"model": "claude-opus-5",
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"model": "claude-opus-5",
"model": "claude-opus-5-5",
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--model claude-opus-5-5 \
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agents-and-tools/tool-use/build-a-tool-using-agent
model: "claude-opus-5",
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"model": "claude-opus-5",
"model": "claude-opus-5-5",
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--model claude-opus-5-5 \
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agents-and-tools/agent-skills/quickstart
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agents-and-tools/agent-skills/claude-api-skill
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agents-and-tools/agent-skills/claude-api-skill
* **Model migration:** Step-by-step guidance for migrating to newer Claude models (including the breaking changes and behavior shifts on [Claude Opus 5](https://platform.claude.com
* **Model migration:** Step-by-step guidance for migrating to newer Claude models (including the breaking changes and behavior shifts on [Claude Opus 5.5](https://platform.claude.c
/claude-api migrate this project to claude-opus-5
/claude-api migrate this project to claude-opus-5-5
/claude-api migrate everything under src/ to claude-opus-5
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about-claude/use-case-guides/legal-summarization
text, details_to_extract, model="claude-opus-5", max_tokens=1000
text, details_to_extract, model="claude-opus-5-5", max_tokens=1000
text, details_to_extract, model="claude-opus-5", max_tokens=1000
text, details_to_extract, model="claude-opus-5-5", max_tokens=1000
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MODEL = "claude-opus-5"
MODEL = "claude-opus-5-5"
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about-claude/pricing
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about-claude/pricing
| Claude Opus 5.5 | $4 / MTok | $5 / MTok | $8 /
*<sup>1 Cache hits and refreshes on Claude Fable 5.1 and Claude Mythos 5.1 are priced at 0.025x the base input price. All other models use the standard 0.1x multiplier.</sup>*
*<sup>1 Cache hits and refreshes on Claude Fable 5.1 and Claude Mythos 5.1 are priced at 0.025x the base input price.</sup>*
*<sup>2 Cache hits and refreshes on Claude Opus 5.5 are priced at 0.05x the base input price.</sup>*
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about-claude/models/optimizing-for-cost-and-intelligence
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about-claude/models/optimizing-for-cost-and-intelligence
Anthropic measured the triage job from [Trim input and context tokens](https://platform.claude.com/docs/en/about-claude/models/optimizing-for-cost-and-intelligence#trim-input-and-c
Anthropic measured the triage job from [Trim input and context tokens](https://platform.claude.com/docs/en/about-claude/models/optimizing-for-cost-and-intelligence#trim-input-and-c
These levers set where a single model sits between cost and intelligence: model choice, effort, re-running failures at a higher setting, and the budgets and caps it works within. S
These levers set where a single model sits between cost and intelligence: model choice, effort, re-running failures at a higher setting, and the budgets and caps it works within. S
Effort is the most direct way to tune a model to your task. The `effort` parameter governs how much thinking, tool calling, and self-verification the model does, and the default (`
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about-claude/models/choosing-a-model
* **Speed:** How quickly does the model need to respond in your application? Claude Opus 5 and Claude Opus 4.8 support [fast mode](https://platform.claude.com/docs/en/build-with-cl
* **Speed:** How quickly does the model need to respond in your application? Claude Opus 5.5, Claude Opus 5, and Claude Opus 4.8 support [fast mode](https://platform.claude.com/doc
* **Effort:** Several Claude models support an [effort parameter](https://platform.claude.com/docs/en/build-with-claude/effort) that trades intelligence for latency and cost within
* **Effort:** Several Claude models support an [effort parameter](https://platform.claude.com/docs/en/build-with-claude/effort) that trades intelligence for latency and cost within
1. Implement with Claude Opus 5.
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about-claude/model-deprecations
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about-claude/model-deprecations
| claude-opus-5-5 | Active | N/A | Not sooner than September 22, 2027 |
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google-vertex-ai
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google-vertex-ai
| Model type | Default value |
| :--------------- | :--------------------------- |
| Primary model | `claude-opus-5-5` |
| Model type | Default value |
| :- | :- |
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sub-agents
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sub-agents
| `model` | No | [Model](#choose-a-model) to use: `sonnet`, `opus`, `haiku`, `fable`, a full model ID such as `claude-opus-5`, or `inherit`. When you omit it, Claud
| `model` | No | [Model](#choose-a-model) to use: `sonnet`, `opus`, `haiku`, `fable`, a full model ID such as `claude-opus-5-5`, or `inherit`. When you omit it, Cla
* **Full model ID**: use a full model ID such as `claude-opus-5` or `claude-sonnet-5`. Accepts the same values as the `--model` flag
* **Full model ID**: use a full model ID such as `claude-opus-5-5` or `claude-sonnet-5`. Accepts the same values as the `--model` flag
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statusline
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statusline
"id": "claude-opus-5",
"id": "claude-opus-5-5",
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settings-reference
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settings-reference
* **Type**: string, one of the aliases `"fable"`, `"opus"`, or `"sonnet"`, which resolve to Claude Code's current default version of that model family, or a full model ID such as `
* **Type**: string, one of the aliases `"fable"`, `"opus"`, or `"sonnet"`, which resolve to Claude Code's current default version of that model family, or a full model ID such as `
On models that always think, such as the Fable models, `false` has no effect. On [third-party providers](/docs/en/third-party-integrations) Claude Code omits the `thinking` paramet
On models that always think, such as Opus 5.5 and the Fable models, `false` has no effect. On [third-party providers](/docs/en/third-party-integrations) Claude Code omits the `thin
In a session attached to a remote worker, `/effort` applies to that session only. In a `-p` run or the Agent SDK it also applies to that session only, [unless a hold on the model's
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settings-example
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settings-example
"effortLevel": "xhigh",
"modelSettings": {
"claude-sonnet-5": { "effortLevel": "xhigh" }
},
// Reason more deeply than the default high level on models without a saved level; /effort saves a level per model, and --effort sets one for a single session
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prompt-caching
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prompt-caching
[Automatic model fallback](/docs/en/model-config#automatic-model-fallback) on Fable models and Opus 5 is also a model switch. When a safety classifier flags a request in a category
[Automatic model fallback](/docs/en/model-config#automatic-model-fallback) on Fable models, Opus 5.5, and Opus 5 is also a model switch. When a safety classifier flags a request in
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model-config
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model-config
| Anthropic API | Opus 5 | Sonnet 5 |
| [Claude Platform on AWS](/docs/en/claude-platform-on-aws) | Opus 5 | Sonnet 4.6 |
| Amazon Bedrock, Google Cloud's Agent Platform | Opus 5 | Sonnet 4.5 |
| Anthropic API | Opus 5.5 | Sonnet 5 |
| [Claude Platform on AWS](/docs/en/claude-platform-on-aws) | Opus 5.5 | Sonnet 4.6 |
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interactive-mode
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interactive-mode
| `Option+T` (macOS) or `Alt+T` (Windows/Linux) | Toggle extended thinking
| `Option+T` (macOS) or `Alt+T` (Windows/Linux) | Toggle extended thinking
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google-vertex-ai
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google-vertex-ai
Without `ANTHROPIC_DEFAULT_OPUS_MODEL`, the `opus` alias on Google Cloud's Agent Platform resolves to Opus 5, and without `ANTHROPIC_DEFAULT_SONNET_MODEL`, the `sonnet` alias resol
Without `ANTHROPIC_DEFAULT_OPUS_MODEL`, the `opus` alias on Google Cloud's Agent Platform resolves to Opus 5.5, and without `ANTHROPIC_DEFAULT_SONNET_MODEL`, the `sonnet` alias res
| Primary model | `claude-opus-5` |
| Primary model | `claude-opus-5-5` |
On v2.1.207 through v2.1.218, the primary model on Google Cloud's Agent Platform defaulted to Opus 4.8 and the `opus` alias resolved to Opus 4.8. Before v2.1.207, the primary model
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github-actions
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github-actions
--model claude-opus-4-8
--model claude-opus-5-5
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fast-mode
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fast-mode
Fast mode is not a different model. It uses Claude Opus with a different API configuration that prioritizes speed over cost efficiency. You get identical quality and capabilities w
Fast mode is not a different model. It uses Claude Opus with a different API configuration that prioritizes speed over cost efficiency. You get identical quality and capabilities w
* Fast mode pricing per MTok input/output is \$10/\$50 on Opus 5 and Opus 4.8.
* Fast mode pricing per MTok input/output is \$8/\$40 on Opus 5.5 and \$10/\$50 on Opus 5 and Opus 4.8.
Opus 5 is the fast mode default in Claude Code v2.1.219 and later. Before v2.1.219, fast mode defaulted to Opus 4.8 on v2.1.154 through v2.1.218, and to Opus 4.7 on v2.1.142 throug
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errors
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errors
| `Opus 5.5's safeguards flagged this session`
* Run `claude update` and restart Claude Code. Opus 4.7 needs v2.1.111 or later. Opus 4.8 needs v2.1.154 or later. Sonnet 5 needs v2.1.197 or later. Opus 5 needs v2.1.219 or later
* Run `claude update` and restart Claude Code. Opus 4.7 needs v2.1.111 or later. Opus 4.8 needs v2.1.154 or later. Sonnet 5 needs v2.1.197 or later. Opus 5 needs v2.1.219 or later.
* If you hit this in the [Agent SDK](/docs/en/agent-sdk/overview), upgrade the SDK package instead. Opus 4.8 needs TypeScript SDK v0.3.154 or later and Python SDK v0.2.88 or later.
* If you hit this in the [Agent SDK](/docs/en/agent-sdk/overview), upgrade the SDK package instead. Opus 4.8 needs TypeScript SDK v0.3.154 or later and Python SDK v0.2.88 or later.
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env-vars
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env-vars
| `CLAUDE_CODE_DISABLE_THINKING` | Set to `1` to omit the `thinking` parameter from API requests entirely. This is a compatibility option for proxies and g
| `CLAUDE_CODE_DISABLE_THINKING` | Set to `1` to omit the `thinking` parameter from API requests entirely. This is a compatibility option for proxies and g
| `MAX_THINKING_TOKENS` | Fixed token budget for [extended thinking](https://platform.claude.com/docs/en/build-with-claude/extended-thinking). Cla
| `MAX_THINKING_TOKENS` | Fixed token budget for [extended thinking](https://platform.claude.com/docs/en/build-with-claude/extended-thinking). Cla
| `VERTEX_REGION_CLAUDE_5_5_OPUS` | Override region for Claude Opus 5.5 when using Google Cloud's Agent Platform. Added in v2.1.280
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desktop
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desktop
[Extended thinking](/docs/en/model-config#extended-thinking) is enabled by default, which improves performance on complex reasoning tasks but uses additional tokens. On the Anthrop
[Extended thinking](/docs/en/model-config#extended-thinking) is enabled by default, which improves performance on complex reasoning tasks but uses additional tokens. On the Anthrop
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costs
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costs
Sonnet handles most coding tasks well and costs less than Opus. Reserve Opus for complex architectural decisions or multi-step reasoning. Use `/model` to switch models mid-session,
Sonnet handles most coding tasks well and costs less than Opus. Reserve Opus for complex architectural decisions or multi-step reasoning. Use `/model` to switch models mid-session,
For simpler tasks where deep reasoning isn't needed, you can reduce costs by lowering the [effort level](/docs/en/model-config#adjust-effort-level) with `/effort` or in `/model`, o
For simpler tasks where deep reasoning isn't needed, you can reduce costs by lowering the [effort level](/docs/en/model-config#adjust-effort-level) with `/effort` or in `/model`, o
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communications-kit
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communications-kit
biology content falls back to Opus automatically. Opus 5 runs its own
checks, so flagged cybersecurity content switches models and flagged
biology content is refused.
biology content falls back to Opus automatically. Opus 5.5 and Opus 5 run
their own checks too: flagged content switches to an earlier Opus, except
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commands
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commands
| `/effort [level\|auto\|status]` | Set the [effort level](/docs/en/model-config#adjust-effort-level):
| `/effort [level\|auto\|status]` | Set the [effort level](/docs/en/model-config#adjust-effort-level):
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The default aliases `fable`, `opus`, `sonnet`, and `haiku` resolve to Claude Code's built-in defaults for Claude Platform on AWS, which can lag the newest release. Without `ANTHROP
The default aliases `fable`, `opus`, `sonnet`, and `haiku` resolve to Claude Code's built-in defaults for Claude Platform on AWS, which can lag the newest release. Without `ANTHROP
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* **`/model`, `/effort`, `/color`, and `/rename`**: pass the value as an argument, for example `/model sonnet`, instead of opening the terminal picker or slider. The argument forms
* **`/model`, `/effort`, `/color`, and `/rename`**: pass the value as an argument, for example `/model sonnet`, instead of opening the terminal picker or slider. The argument forms
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amazon-bedrock
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amazon-bedrock
Without `ANTHROPIC_DEFAULT_OPUS_MODEL`, the `opus` alias on Amazon Bedrock resolves to Opus 5, and without `ANTHROPIC_DEFAULT_SONNET_MODEL`, the `sonnet` alias resolves to Sonnet 4
Without `ANTHROPIC_DEFAULT_OPUS_MODEL`, the `opus` alias on Amazon Bedrock resolves to Opus 5.5, and without `ANTHROPIC_DEFAULT_SONNET_MODEL`, the `sonnet` alias resolves to Sonnet
| You set | The `opus` alias resolves to |
| :------------------------------------------------------------ | :---------------------------------------------------------------------------- |
| `ANTHROPIC_DEFAULT_OPUS_MODEL='us.anthropic.claude-opus-4-8'` | `us.anthropic.claude-opus-4-8`, the exact ID you pinned |
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agent-sdk/typescript
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agent-sdk/typescript
The `context-1m-2025-08-07` beta is retired as of April 30, 2026. Passing this value with Claude Sonnet 4.5 or Sonnet 4 has no effect, and requests that exceed the standard 200k-
The `context-1m-2025-08-07` beta is retired as of April 30, 2026. Passing this value with Claude Sonnet 4.5 or Sonnet 4 has no effect, and requests that exceed the standard 200k-
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agent-sdk/python
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agent-sdk/python
The `context-1m-2025-08-07` beta is retired as of April 30, 2026. Passing this header with Claude Sonnet 4.5 or Sonnet 4 has no effect, and requests that exceed the standard 200k
The `context-1m-2025-08-07` beta is retired as of April 30, 2026. Passing this header with Claude Sonnet 4.5 or Sonnet 4 has no effect, and requests that exceed the standard 200k
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advisor
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advisor
| Opus 5 | Fable, Opus 5 | An Opus 4.6 or Sonnet advisor is rejected, and the API refuses an Opus 4.7 or Opus 4.8 advisor |
| Opus 5.5 or Opus 5 | Fable, and Opus 5 or later | An Opus 4.6 or Sonnet advisor is rejected, and the API refuses an Opus 4.7 or Opus 4.8 advisor |
Set the advisor as `fable`, `opus`, or `sonnet`. These aliases resolve to Claude Code's built-in default version for each model family, which advances with new Claude Code releases
Set the advisor as `fable`, `opus`, or `sonnet`. These aliases resolve to Claude Code's built-in default version for each model family, which advances with new Claude Code releases
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third-party/claude-desktop/telemetry
Claude Desktop can make the following Anthropic-bound connections. Each row names the key that turns that connection off.
Each connection in the following table has a managed-configuration key that turns it off.
These optional features add Anthropic-operated hosts back when you turn them on:
These optional features add hosts back when you turn them on:
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claude-science/connectors-and-skills
| Connector | Sources |
| ------------------------- | ---------------------------------------------------- |
| Genomes | Ensembl (incl. VEP), UCSC |
| Genes & Ontologies | MyGene, UniProt, GO, Reactome, OLS |
| Variants | gnomAD, ClinVar, dbSNP |
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claude-science/changelog
<Update label="0.1.51" description="September 22, 2026">
* Pinned sessions (formerly starred) from across all your projects now appear at the top of the session list; a new switch in **Settings > General > Appearance** lets you limit t
* In Markdown files, click a plain-text cell in a table to edit it in place
* Tables in Markdown files keep their scroll position when Claude saves another file
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claude-science/artifacts
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claude-science/artifacts
When Claude saves the same filename again in the same session, the artifact gains a new version. You can also edit text-based artifacts (Markdown, code, plain text) directly: click
When Claude saves the same filename again in the same session, the artifact gains a new version. You can also edit text-based artifacts (Markdown, code, plain text) directly: click
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government/config/settings
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government/config/settings
Turning a switch off also changes this layout. For example, with **Chat in Claude Desktop** off, the sidebar shows **Cowork** in place of Home and the message box offers no choice,
Turning a switch off also changes this layout. For example, with **Chat in Claude Desktop** off, the sidebar shows **Cowork** in place of Home and the message box offers no choice,
The **Claude Desktop home** setting chooses what members see in Claude Desktop. **Standard** gives them Chat with file analysis, plus Cowork. **Simple** gives them Chat with file a
The **Claude Desktop home** setting chooses what members see in Claude Desktop. **Standard** gives them Chat with file analysis, plus Cowork. **Simple** gives them Chat with file a
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third-party/claude-desktop/installation
### Cowork workspace or Claude CLI fails to download
Claude Desktop downloads the VM workspace bundle that Cowork uses and the Claude CLI binary (the agent helper described under [Endpoint security software](#endpoint-security-softwa
Restarting the app tries the download again, which is enough when an earlier attempt was only interrupted. When the same message returns on every attempt, the usual cause is a prox
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government/deploy-desktop/configure
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government/deploy-desktop/configure
* **Devices used for Code have the software your users' work needs.** Code runs its commands with the software installed on the device. Cowork and Advanced file analysis in Chat ru
| The app shows **Failed to start Claude's workspace** with a download error under it, or Chat conversations and Cowork tasks fail to start with "Host Claude Code binary not availa
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government/desktop/skills
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government/desktop/skills
A skill is a set of instructions, with optional scripts and resources, that Claude loads when a task matches it, so you can teach Claude a workflow once and reuse it. See the [Skil
A skill is a set of instructions, with optional scripts and resources, that Claude loads when a task matches it, so you can teach Claude a workflow once and reuse it. See the [Skil
* Skills bundled in plugins your administrators deliver, which arrive with the plugin as described in [Plugins in Claude Desktop](/docs/government/desktop/plugins.md).
* Skills bundled in plugins your administrators deliver, which arrive with the plugin as described in [Plugins in Claude Desktop](https://claude.com/docs/government/desktop/plugins
Open **Customize** in the sidebar, then **Skills**, to see your skills and turn any of them on or off. Select **Add**, then choose **Create a skill** to write one yourself, or **Up
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government/desktop/skills
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government/desktop/skills
A skill is a set of instructions, with optional scripts and resources, that Claude loads when a task matches it, so you can teach Claude a workflow once and reuse it. See the [Skil
A skill is a set of instructions, with optional scripts and resources, that Claude loads when a task matches it, so you can teach Claude a workflow once and reuse it. See the [Skil
* Skills bundled in plugins your administrators deliver, which arrive with the plugin as described in [Plugins in Claude Desktop](/docs/government/desktop/plugins).
* Skills bundled in plugins your administrators deliver, which arrive with the plugin as described in [Plugins in Claude Desktop](/docs/government/desktop/plugins.md).
Open **Customize** in the sidebar, then **Skills**, to see your skills and turn any of them on or off. Select **Add**, then choose **Create a skill** to write one yourself, or **Up
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government/desktop/skills
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government/desktop/skills
**Mind the text-only rule.** A skill delivered through the admin portal can contain only text files, in these formats: `.md`, `.txt`, `.json`, `.yaml`, `.yml`, `.csv`. Skills you c
**Mind the text-only rule.** A skill delivered through the admin portal can contain only text files, in these formats: `.md`, `.txt`, `.json`, `.yaml`, `.yml`, `.csv`. The skill au
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government/config/plugins-and-connectors
Apart from the optional icon, everything in an archive must be text in UTF-8. There is no way to ship a script, or any other binary asset such as an image, through the card, which
Apart from the optional icon, everything in an archive must be text in UTF-8. There is no way to ship a script, or any other binary asset such as an image, through the card. File a
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community/contributing
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community/contributing
[Contributor Communication](/community/communication) guide for all channels - including
[Contributor Communication](/community/communication.md) guide for all channels - including
site, and [Spec Enhancement Proposals (SEPs)](/community/sep-guidelines).
site, and [Spec Enhancement Proposals (SEPs)](/community/sep-guidelines.md).
MCP follows a [governance model](/community/governance) with different levels of responsibility:
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community/contributing
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community/contributing
<Note>
These commands work the same on macOS, Linux, and Windows, so you're good to
go on any platform.
</Note>
> [!NOTE]
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community/contributing
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community/contributing
| Repository | Contents |
| ----------------------------------------------------------------------------------------------------------- | ------------------------- |
| Repository | Contents |
| - | - |
| [`modelcontextprotocol/typescript-sdk`](https://github.com/modelcontextprotocol/typescript-sdk) | TypeScript/JavaScript SDK |
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community/contributing
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community/contributing
### Join the Community
You don't need to have a change ready to get involved. Join the
[MCP Contributor Discord](https://discord.gg/6CSzBmMkjX) to connect with contributors and
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slack
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slack
| Requirement | Details |
| :------------------- | :------------------------------------------------------------------------------------------------ |
| Claude Plan | Pro, Max, Team, or Enterprise with Claude Code access (premium seats or Chat + Claude Code seats) |
| Cloud sessions | [Cloud sessions](/docs/en/claude-code-on-the-web) are enabled for your account |
| GitHub Account | Connected at [claude.ai/code](https://claude.ai/code) with at least one repository authenticated |
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self-hosted-environments-reference
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self-hosted-environments-reference
| Flag | Env var | Default | Description
| :---------------------------------------- | :------------------------------------------------ | :---------------------------- | :-------------------------------------------------
| `--api-url <url>` | none | `https://api.anthropic.com` | API base URL. Override only for testing.
| `--base-dir <path>` | `SELF_HOSTED_RUNNER_BASE_DIR` | `/workspace`; none on Windows | Directory for repository checkouts and per-session
| `--capacity <n>` | none | `1` | Maximum concurrent sessions this runner handles. A
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chrome
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chrome
| Error | Cause
| ------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------
| "Browser extension is not connected" | Native messaging host cannot reach the extension, or your organization's IP allowlist rejects the connection to `bridge.claudeuserco
| Extension shows "Not detected" in `/chrome` | Chrome extension is not installed or is disabled
| "No tab available" | Claude tried to act before a tab was ready
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agent-sdk/subagents
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agent-sdk/subagents
| Field | Type | Required | Description
| :---------------- | :---------------------------------------------------------- | :------- | :------------------------------------------------------------------------------------
| `description` | `string` | Yes | Natural language description of when to use this agent
| `prompt` | `string` | Yes | The agent's system prompt defining its role and behavior
| `tools` | `string[]` | No | Array of allowed tool names. If omitted, inherits every [tool available to subagents]
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agent-sdk/claude-code-features
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agent-sdk/claude-code-features
| Source | What it loads | Location
| :---------- | :--------------------------------------------------------------------------------------------------------------------- | :------------------------------------------
| Source | What it loads | Location |
| :- | :- | :- |
| `"user"` | User `settings.json`; user CLAUDE.md and `~/.claude/rules/*.md`; user skills, commands, and subagents | `~/.claude/` for `settings.json`, CLAUDE.md
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vs-code
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vs-code
* VS Code 1.94.0 or higher
* VS Code 1.94.0 or later
Connect Claude to your Chrome browser to test web apps, debug with console logs, and automate browser workflows without leaving VS Code. This requires the [Claude in Chrome extensi
Connect Claude to your Chrome browser to test web apps, debug with console logs, and automate browser workflows without leaving VS Code. This requires the [Claude in Chrome extensi
Once configured, ask Claude to use the tools (e.g., "Review PR #456").
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statusline
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statusline
Run `/statusline` and ask it to remove or clear your status line (e.g., `/statusline delete`, `/statusline clear`, `/statusline remove it`). You can also manually delete the `statu
Run `/statusline` and ask it to remove or clear your status line (for example, `/statusline delete`, `/statusline clear`, `/statusline remove it`). You can also manually delete the
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slack
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slack
* **Collaborative debugging**: When team discussions provide crucial context (e.g., error reproductions or user reports), Claude can use that information to inform its debugging ap
* **Collaborative debugging**: When team discussions provide crucial context (for example, error reproductions or user reports), Claude can use that information to inform its debug
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skills
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skills
2. The subagent receives the skill content as its prompt ("Research \$ARGUMENTS thoroughly...")
2. The subagent receives the skill content as its prompt (the "Research \$ARGUMENTS thoroughly" instructions)
To raise the budget, set the [`skillListingBudgetFraction`](/docs/en/settings-reference#skilllistingbudgetfraction) setting (e.g. `0.02` = 2%) or the `SLASH_COMMAND_TOOL_CHAR_BUDGE
To raise the budget, set the [`skillListingBudgetFraction`](/docs/en/settings-reference#skilllistingbudgetfraction) setting (for example, `0.02` = 2%) or the `SLASH_COMMAND_TOOL_CH
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self-hosted-environments-reference
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self-hosted-environments-reference
| `--use-anthropic-git-proxy` | `CLAUDE_RUNNER_USE_GIT_PROXY=1` | off | Clone via the [Anthropic git proxy](/docs/en/self-
| `--use-anthropic-git-proxy` | `CLAUDE_RUNNER_USE_GIT_PROXY=1` | off | Clone via the [Anthropic git proxy](/docs/en/self-
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self-hosted-environments-deploy
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self-hosted-environments-deploy
Git version floors on the runner host: [`--configure-git`](#let-the-runner-configure-git) SSH commit signing requires Git 2.34 or newer, [`--use-anthropic-git-proxy`](#use-the-anth
Git version floors on the runner host: [`--configure-git`](#let-the-runner-configure-git) SSH commit signing requires Git 2.34 or later, [`--use-anthropic-git-proxy`](#use-the-anth
Commit signing requires git 2.34 or newer; the runner checks at startup and exits with an error if your git is older. This flag doesn't configure push credentials, which you still
Commit signing requires git 2.34 or later; the runner checks at startup and exits with an error if your git is older. This flag doesn't configure push credentials, which you still
The proxy requires `--capacity 1` because the proxy URL is per-session, and git 2.32 or newer because older git ignores the configuration mechanism the proxy uses to isolate sessio
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quickstart
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quickstart
```bash theme={null}
```bash theme={null} theme={null} theme={null} theme={null} theme={null} theme={null} theme={null}
```powershell theme={null}
```powershell theme={null} theme={null} theme={null} theme={null} theme={null} theme={null} theme={null}
```batch theme={null}
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plugins-reference
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plugins-reference
| LSP `Executable not found in $PATH` | Language server not installed | Install the binary (e.g., `npm install -g typescript-language-server typescript`)
| LSP `Executable not found in $PATH` | Language server not installed | Install the binary (for example, `npm install -g typescript-language-server typescript`)
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plugin-marketplaces
| Source | Type | Fields | Notes
| ------------- | ------------------------------- | ---------------------------------- | -------------------------------------------------------------------------------------------
| Relative path | `string` (e.g. `"./my-plugin"`) | none | Local directory within the marketplace repo. Must start with `./`, unless you write a [bare
| `github` | object | `repo`, `ref?`, `sha?` |
| `url` | object | `url`, `ref?`, `sha?` | Git URL source
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overview
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overview
```bash theme={null}
```bash theme={null} theme={null} theme={null} theme={null} theme={null} theme={null} theme={null}
```powershell theme={null}
```powershell theme={null} theme={null} theme={null} theme={null} theme={null} theme={null} theme={null}
```batch theme={null}
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common-workflows
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common-workflows
3. Provide an image path to Claude. E.g., "Analyze this image: /path/to/your/image.png"
3. Provide an image path to Claude, for example "Analyze this image: /path/to/your/image.png"
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chrome
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chrome
* [Claude in Chrome extension](https://chromewebstore.google.com/detail/claude/fcoeoabgfenejglbffodgkkbkcdhcgfn) version 1.0.36 or higher, available in the Chrome Web Store
* [Claude in Chrome extension](https://chromewebstore.google.com/detail/claude/fcoeoabgfenejglbffodgkkbkcdhcgfn) version 1.0.36 or later, available in the Chrome Web Store
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agent-sdk/user-input
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agent-sdk/user-input
| `toolName` | The name of the tool Claude wants to use (e.g., `"Bash"`, `"Write"`, `"Edit"`)
| `toolName` | The name of the tool Claude wants to use (for example, `"Bash"`, `"Write"`, `"Edit"`)
* **Approve with changes**: modify the input before execution (e.g., sanitize paths, add constraints)
* **Approve with changes**: modify the input before execution (for example, sanitize paths, add constraints)
| From the question object | Use as |
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agent-sdk/typescript
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agent-sdk/typescript
| `name` | `string` | Agent type identifier (e.g., `"Explore"`, `"general-purpose"`)
| `name` | `string` | Agent type identifier (for example, `"Explore"`, `"general-purpose"`)
Status update message (e.g., compacting).
Status update message (for example, compacting).
| `allowLocalBinding` | `boolean` | `false` | Allow processes to bind to local ports (e.g., for dev servers)
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agent-sdk/subagents
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agent-sdk/subagents
* **Use explicit prompting**: mention the subagent by name in your prompt, for example "Use the code-reviewer agent to..."
* **Use explicit prompting**: mention the subagent by name in your prompt, for example "Use the code-reviewer agent to check the authentication module"
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agent-sdk/quickstart
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agent-sdk/quickstart
This example uses streaming to show progress in real-time. If you don't need live output (e.g., for background jobs or CI pipelines), you can collect all messages at once. See [S
This example uses streaming to show progress in real-time. If you don't need live output (for example, for background jobs or CI pipelines), you can collect all messages at once.
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agent-sdk/python
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agent-sdk/python
| `stop_reason` | `str \| None` | Stop reason from the API (e.g. `end_turn`, `tool_use`) |
| `stop_reason` | `str \| None` | Stop reason from the API (for example, `end_turn`, `tool_use`) |
| `allowLocalBinding` | `bool` | `False` | Allow processes to bind to local ports (e.g., for dev servers)
| `allowLocalBinding` | `bool` | `False` | Allow processes to bind to local ports (for example, for dev servers)
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agent-sdk/custom-tools
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agent-sdk/custom-tools
| If you want to... | Do this
| What you want to do | Do this
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agent-sdk/claude-code-features
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agent-sdk/claude-code-features
| You want to... | Use | SDK surface
| What you want to do | Use | SDK surface
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claude-tag/admins/federated-access/troubleshooting
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### request blocked: this credential only works in channel sessions, not personal ones
**What you see**
Claude's request got HTTP 403 with this reason.
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claude-tag/admins/federated-access/gcp
If Claude reports HTTP 403 with a reason that starts with [`request blocked: this credential only works in channel sessions, not personal ones`](/docs/claude-tag/admins/federated-a
If Claude reports HTTP 403 with a reason that starts with [`request blocked: federated connections work only in agent sessions (such as a Slack channel), not in personal sessions (
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claude-tag/admins/federated-access/connect-a-gateway
If Claude reports HTTP 403 with a reason that starts with [`request blocked: this credential only works in channel sessions, not personal ones`](/docs/claude-tag/admins/federated-a
If Claude reports HTTP 403 with a reason that starts with [`request blocked: federated connections work only in agent sessions (such as a Slack channel), not in personal sessions (
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claude-tag/admins/federated-access/aws
If Claude reports HTTP 403 with a reason that starts with [`request blocked: this credential only works in channel sessions, not personal ones`](/docs/claude-tag/admins/federated-a
If Claude reports HTTP 403 with a reason that starts with [`request blocked: federated connections work only in agent sessions (such as a Slack channel), not in personal sessions (
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claude-tag/admins/federated-access/authorization-server
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claude-tag/admins/federated-access/authorization-server
If Claude reports HTTP 403 with a reason that starts with [`request blocked: this credential only works in channel sessions, not personal ones`](/docs/claude-tag/admins/federated-a
If Claude reports HTTP 403 with a reason that starts with [`request blocked: federated connections work only in agent sessions (such as a Slack channel), not in personal sessions (
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mcp
seps/1330-elicitation-enum-schema-improvements-and-standards
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> specification](/specification/latest) and its changelog for authoritative
> specification](/specification/latest.md) and its changelog for authoritative
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<div className="flex items-center gap-2 mb-4">
<Badge color="green" shape="pill">
Final
</Badge>
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seps/1330-elicitation-enum-schema-improvements-and-standards
| Field | Value |
| ------------- | ------------------------------------------------------------------------------- |
| **SEP** | 1330 |
| **Title** | Elicitation Enum Schema Improvements and Standards Compliance |
| **Status** | Final |
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Serves that support neither `listChanged` or `subscribe` may omit it:
Servers that support neither `listChanged` nor `subscribe` may omit it:
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specification/2026-07-28/server/resources
Serves that support neither `listChanged` or `subscribe` may omit it:
Servers that support neither `listChanged` nor `subscribe` may omit it:
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"mimeType": "image/png"
"mimeType": "image/png",
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“enumNames”: ["Red", "Green", "Blue"],
"default": "Green"
"enumNames": ["Red", "Green", "Blue"],
"default": "#00FF00"
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| Role | Name | Organization | GitHub | Term |
| ----------- | ------------------------ | ------------ | -------------------------------------- | ------- |
| Facilitator | Sambhav Kothari | Bloomberg | [@sambhav](https://github.com/sambhav) | Initial |
| Facilitator | Peder Holdgaard Pedersen | Saxo Bank | [@PederHP](https://github.com/PederHP) | Initial |
| Role | Name | Organization | GitHub | Term |
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Discord: [#financial-services-ig](https://discord.gg/NzkBHsrGf)
Discord: [#financial-services-ig](https://discord.gg/6CSzBmMkjX)
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"http://localhost:3000/callback"
"http://[::1]:3000/callback"
Client->>Server: Authorization Request<br/>client_id=https://app.example.com/oauth/metadata.json<br/>redirect_uri=http://localhost:3000/callback
Client->>Server: Authorization Request<br/>client_id=https://app.example.com/oauth/metadata.json<br/>redirect_uri=http://127.0.0.1:3000/callback
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Nothing on this page matches that. Press Enter to search every page of the ledger.