HomeDocs changes
Documentation changes
What the docs quietly changed.
Anthropic's published documentation, fetched on a schedule and diffed against the last copy. Every edit dated, including the ones that never made a release note.
Last poll read all 4 cleanly: Claude Code CLI, Claude Developer Platform, Claude Documentation, Model Context Protocol. A date here is when this site noticed, not when Anthropic edited.
Claude Developer Platform
821pages tracked
774 changed this week · last read 23 Oct 2026
Claude Code CLI
228pages tracked
148 changed this week · last read 23 Oct 2026
Claude Documentation
280pages tracked
81 changed this week · last read 23 Oct 2026
Model Context Protocol
357pages tracked
171 changed this week · last read 23 Oct 2026
100 on this page
ReadSourcePageWhatLines
15 Oct 2026
193 pages
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api
build-with-claude/search-results
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build-with-claude/search-results
<CodeGroup>
```bash cURL
# The tool-calling flow needs application-side search logic that doesn't
# translate to a one-off shell command. See the SDK tabs for the full flow.
# The raw shape of a tool conversation with search results is shown in the
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build-with-claude/refusals-and-fallback
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build-with-claude/refusals-and-fallback
<CodeGroup>
```bash cURL
# The refusal-fallback middleware is an SDK feature. See the
# server-side fallback section for the equivalent single-request approach,
# or the fallback credit page for the raw HTTP retry pattern.
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build-with-claude/prompt-engineering/claude-prompting-best-practices
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build-with-claude/prompt-engineering/claude-prompting-best-practices
### Medication dosing
If people might ask your application about medicine doses, add the block below for the model your application calls to your system prompt, exactly as written. The block has Claude
```text Medication dosing block for Claude Sonnet 5.5 wrap
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api
build-with-claude/pdf-support
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build-with-claude/pdf-support
-d @- <<EOF
{
"model": "claude-opus-5-5",
"max_tokens": 1024,
"messages": [{
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api
build-with-claude/mid-conversation-effort-example
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build-with-claude/mid-conversation-effort-example
-d @- <<'EOF'
{
"model": "claude-opus-5-5",
"max_tokens": 64000,
"system": "You are a helpful general-purpose agent. Answer the user's request directly.",
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build-with-claude/files
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build-with-claude/files
-d @- <<EOF
{
"model": "claude-opus-5-5",
"max_tokens": 1024,
"messages": [
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api
build-with-claude/fast-mode
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build-with-claude/fast-mode
title: Fast mode (research preview)
title: Fast mode
description: Get up to 2.5x higher output tokens per second from supported Claude Opus models.
description: Get up to 2.5x higher output tokens per second from supported Claude models.
Fast mode delivers up to 2.5x higher output tokens per second from Claude Opus 5.5, Claude Opus 5, and Claude Opus 4.8 at premium pricing. Set `speed: "fast"` with the `fast-mode-2
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build-with-claude/compaction-background
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build-with-claude/compaction-background
<Note>
The PHP SDK sends requests synchronously, so it can't run the compaction request in the background while the conversation goes on.
</Note>
The PHP SDK sends requests synchronously, so it can't run the compaction request in the background while the conversation goes on.
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api
build-with-claude/claude-platform-on-aws
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build-with-claude/claude-platform-on-aws
Session behavior on Claude Platform on AWS differs from first-party Claude Managed Agents in two ways:
Sessions and self-hosted workers on Claude Platform on AWS differ from first-party Claude Managed Agents in three ways:
* **[Worker authentication on self-hosted environments](https://platform.claude.com/docs/en/managed-agents/self-hosted-sandboxes#prerequisites):** A worker authenticates with AWS I
# The ant CLI's output formats print the response body, not response headers.
# To read x-amzn-requestid, use the cURL example (-i) or an SDK example.
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build-with-claude/claude-on-vertex-ai
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build-with-claude/claude-on-vertex-ai
<CodeGroup>
<CodeGroup exclude="shell:CLI">
```bash CLI
# The ant CLI does not support Agent Platform.
```
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api
build-with-claude/claude-in-microsoft-foundry
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build-with-claude/claude-in-microsoft-foundry
* The [Azure CLI](https://learn.microsoft.com/en-us/cli/azure/install-azure-cli) installed (required for the Entra ID cURL example, optional otherwise)
* The [Azure CLI](https://learn.microsoft.com/en-us/cli/azure/install-azure-cli) installed (required for the Entra ID cURL and CLI examples, optional otherwise)
# The ant CLI can send a bearer token with --auth-token, but a set
# ANTHROPIC_API_KEY environment variable takes precedence over it (the CLI
# prints only a console notice), so your request could authenticate with
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api
build-with-claude/citations
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build-with-claude/citations
-d @- <<EOF
{
"model": "claude-opus-5-5",
"max_tokens": 1024,
"messages": [
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api
build-with-claude/cache-diagnostics
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build-with-claude/cache-diagnostics
-d @- <<EOF | jq '{id, diagnostics}' # diagnostics: null means no divergence was found
{
"model": "claude-opus-5-5",
"max_tokens": 1024,
"cache_control": {"type": "ephemeral"},
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api
api/rate-limits
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api/rate-limits
When using [fast mode](https://platform.claude.com/docs/en/build-with-claude/fast-mode) (research preview) with `speed: "fast"` on Claude Opus 5.5, Claude Opus 5, or Opus 4.8, dedi
When using [fast mode](https://platform.claude.com/docs/en/build-with-claude/fast-mode) with `speed: "fast"` on Claude Opus 5.5, Claude Opus 5, or Opus 4.8, dedicated rate limits a
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api/errors
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api/errors
<CodeGroup>
```bash cURL
# Raw SSE output requires handling events; there is no single-command way
# to accumulate the final message with curl. Use the SDK examples instead.
```
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api
agents-and-tools/tool-use/parallel-tool-use
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agents-and-tools/tool-use/parallel-tool-use
<CodeGroup>
```bash cURL
# This end-to-end test flow doesn't translate well to a one-off shell command.
# See the SDK tabs for the full flow. The underlying HTTP request is a standard
# tool use request with multiple tools defined.
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agents-and-tools/tool-use/fine-grained-tool-streaming
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agents-and-tools/tool-use/fine-grained-tool-streaming
<CodeGroup>
```bash cURL
# Accumulating per-block input deltas needs a programming language; the first
# example's CLI tab shows the raw fragments with jq. See the SDK tabs.
```
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agents-and-tools/tool-use/define-tools
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agents-and-tools/tool-use/define-tools
-d @- <<'EOF'
{
"model": "claude-opus-5-5",
"max_tokens": 1024,
"tools": [
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agents-and-tools/tool-use/code-execution-tool
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agents-and-tools/tool-use/code-execution-tool
<CodeGroup>
```bash cURL
# Downloading every generated file means looping over the file IDs in the tool
# result, which doesn't translate to a one-off shell command. Use one of the
# SDK examples instead.
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agents-and-tools/tool-use/build-a-tool-using-agent
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agents-and-tools/tool-use/build-a-tool-using-agent
<CodeGroup>
```bash cURL
#!/bin/bash
# Ring 5: The Tool Runner SDK abstraction.
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api
agents-and-tools/tool-use/browser-use-sdk
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agents-and-tools/tool-use/browser-use-sdk
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agents-and-tools/agent-skills/quickstart
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agents-and-tools/agent-skills/quickstart
-d @- <<'EOF'
{
"model": "claude-opus-5-5",
"max_tokens": 16000,
"container": {
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api
about-claude/use-case-guides/ticket-routing
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about-claude/use-case-guides/ticket-routing
* A Claude API key and the Python SDK installed
* A Claude API key and the Claude SDK installed
```python
def classify_support_request(ticket_contents):
<CodeGroup exclude="shell">
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about-claude/use-case-guides/legal-summarization
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about-claude/use-case-guides/legal-summarization
```python
details_to_extract = [
<CodeGroup exclude="shell">
```python Python
details_to_extract = [
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about-claude/pricing
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about-claude/pricing
[Fast mode](https://platform.claude.com/docs/en/build-with-claude/fast-mode), in research preview, provides significantly faster output for Claude Opus 5.5, Claude Opus 5, and Clau
[Fast mode](https://platform.claude.com/docs/en/build-with-claude/fast-mode) provides significantly faster output for Claude Opus 5.5, Claude Opus 5, and Claude Opus 4.8 at premium
Fast mode is not available on Claude Opus 4.7 (requests with `speed: "fast"` return an error) or Claude Opus 4.6 (requests run at standard speed and are billed at standard rates).
Fast mode is not available on Claude Opus 4.7 (requests with `speed: "fast"` return an error) or Claude Opus 4.6. See [Fast mode](https://platform.claude.com/docs/en/build-with-cla
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about-claude/models/choosing-a-model
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about-claude/models/choosing-a-model
* **Speed:** How quickly does the model need to respond in your application? Claude Opus 5.5, Claude Opus 5, and Claude Opus 4.8 support [fast mode](https://platform.claude.com/doc
* **Speed:** How quickly does the model need to respond in your application? [Fast mode](https://platform.claude.com/docs/en/build-with-claude/fast-mode) delivers up to 2.5x higher
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claude-tag
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claude-tag
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claude-code
changelog
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changelog
<Update label="2.1.301" description="October 15, 2026">
**Added**
* Added `CLAUDE_CODE_RETRY_WATCHDOG_MAX_USAGE_LIMIT_WAIT_MS` so unattended retry mode (`CLAUDE_CODE_RETRY_WATCHDOG`) ends a request at a usage limit that resets too far away inst
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claude-code
vs-code
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claude-codechanged
vs-code
### LaTeX math in responses
The chat panel shows LaTeX math in Claude's responses as typeset formulas. Math rendering requires Claude Code v2.1.301 or later. In [terminal mode](#switch-to-terminal-mode), math
* **Display math**: a `$$ … $$` or `\[ … \]` block on a line or lines of its own, and a fenced code block with `math` as its language
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model-config
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model-config
Either of these startup warnings means Claude Code doesn't recognize your session's model ID, so it can't tell the model's context window and assumes 200K tokens:
```text theme={null}
⚠ Model "my-gateway-opus" isn't recognized · context assumed to be 200k tokens · ...
Claude Code doesn't recognize the model "my-gateway-opus", so it assumes a context window of 200k tokens. Update Claude Code, or see https://code.claude.com/docs/en/model-config#co
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claude-code
errors
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errors
| `API Error: an image in the conversation could not be processed and was removed` | [Request errors](#image-was-too-large) |
| `Claude's response exceeded the ... output token maximum` | [Request errors](#response-exceeded-the-output-token-maximum) |
| `Couldn't tell whether --bg is a flag or text here, so nothing was started` | [Command-line errors](#couldnt-tell-whether-bg-is-a-flag-or-text) |
| `Managed settings contain invalid entries, including PreToolUse/PermissionRequest hooks that are NOT loaded; fix or remove each entry:` | [Configuration warnings](#managed-settin
| `Model "<model>" isn't recognized · context assumed to be 200k tokens` | [Correct the window for a gateway or custom model ID](/docs/en/model-config#correct-the-window-for-a-gate
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whats-new/2026-w33
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claude-codechanged
whats-new/2026-w33
Releases [v2.1.225 → v2.1.233](/docs/en/changelog.md#2-1-225)
Releases [v2.1.225 → v2.1.233](https://code.claude.com/docs/en/changelog.md#2-1-225)
[What to do when you hit a usage limit](/docs/en/errors.md#youve-hit-your-session-limit)
[What to do when you hit a usage limit](https://code.claude.com/docs/en/errors.md#youve-hit-your-session-limit)
[Turn fork mode on or off](/docs/en/sub-agents.md#turn-fork-mode-on-or-off)
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claude-code
whats-new/2026-w32
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claude-codechanged
whats-new/2026-w32
Releases [v2.1.220 → v2.1.224](/docs/en/changelog.md#2-1-220)
Releases [v2.1.220 → v2.1.224](https://code.claude.com/docs/en/changelog.md#2-1-220)
[Message another session](/docs/en/cross-session-messaging.md#message-another-session)
[Message another session](https://code.claude.com/docs/en/cross-session-messaging.md#message-another-session)
[Self-hosted environments quickstart](/docs/en/self-hosted-environments-quickstart.md#set-up-an-environment-and-runner)
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claude-code
whats-new/2026-w30
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claude-codechanged
whats-new/2026-w30
Releases [v2.1.214 → v2.1.219](/docs/en/changelog.md#2-1-214)
Releases [v2.1.214 → v2.1.219](https://code.claude.com/docs/en/changelog.md#2-1-214)
Claude Opus 5 is the new default Opus model in Claude Code. It's the default on Max, Team Premium, Enterprise pay-as-you-go, and the Anthropic API, and on Claude Platform on AWS, A
Claude Opus 5 is the new default Opus model in Claude Code. It's the default on Max, Team Premium, Enterprise pay-as-you-go, and the Anthropic API, and on Claude Platform on AWS, A
[Model configuration](/docs/en/model-config.md#available-models)
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claude-code
code-review-costs
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claude-codechanged
code-review-costs
[Code Review](/docs/en/code-review.md) has no flat per-review price. What you spend depends on the cost of each review and on how many reviews run:
[Code Review](https://code.claude.com/docs/en/code-review.md) has no flat per-review price. What you spend depends on the cost of each review and on how many reviews run:
* **Cost of each review**: scales with the [review level](/docs/en/code-review-setup.md#set-the-default-review-level), the size of the change, the complexity of the surrounding cod
* **Cost of each review**: scales with the [review level](https://code.claude.com/docs/en/code-review-setup.md#set-the-default-review-level), the size of the change, the complexity
A repository you add from the admin page starts at **After every push**, which runs the most reviews. Each repository's [**Review runs** setting](/docs/en/code-review-setup.md#set-
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claude-code
analytics
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analytics
Code Review has its own dashboard. For review activity and spend, see [View usage](/docs/en/code-review-costs.md#view-usage).
Code Review has its own dashboard. For review activity and spend, see [View usage](https://code.claude.com/docs/en/code-review-costs.md#view-usage).
For per-user token counts and cost estimates, configure [OpenTelemetry export](/docs/en/monitoring-usage.md), or export the [spend report](https://support.claude.com/en/articles/12
For per-user token counts and cost estimates, configure [OpenTelemetry export](https://code.claude.com/docs/en/monitoring-usage.md), or export the [spend report](https://support.cl
> Contribution metrics are not available for organizations with [Zero Data Retention](/docs/en/zero-data-retention.md) enabled. The analytics dashboard will show usage metrics only
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claude-code
whats-new/2026-w33
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claude-codechanged
whats-new/2026-w33
Releases [v2.1.225 → v2.1.233](/docs/en/changelog#2-1-225)
Releases [v2.1.225 → v2.1.233](/docs/en/changelog.md#2-1-225)
[What to do when you hit a usage limit](/docs/en/errors#youve-hit-your-session-limit)
[What to do when you hit a usage limit](/docs/en/errors.md#youve-hit-your-session-limit)
[Turn fork mode on or off](/docs/en/sub-agents#turn-fork-mode-on-or-off)
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claude-code
whats-new/2026-w32
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+6−6
claude-codechanged
whats-new/2026-w32
Releases [v2.1.220 → v2.1.224](/docs/en/changelog#2-1-220)
Releases [v2.1.220 → v2.1.224](/docs/en/changelog.md#2-1-220)
[Message another session](/docs/en/cross-session-messaging#message-another-session)
[Message another session](/docs/en/cross-session-messaging.md#message-another-session)
[Self-hosted environments quickstart](/docs/en/self-hosted-environments-quickstart#set-up-an-environment-and-runner)
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claude-code
whats-new/2026-w30
±changed
+7−7
claude-codechanged
whats-new/2026-w30
Releases [v2.1.214 → v2.1.219](/docs/en/changelog#2-1-214)
Releases [v2.1.214 → v2.1.219](/docs/en/changelog.md#2-1-214)
Claude Opus 5 is the new default Opus model in Claude Code. It's the default on Max, Team Premium, Enterprise pay-as-you-go, and the Anthropic API, and on Claude Platform on AWS, A
Claude Opus 5 is the new default Opus model in Claude Code. It's the default on Max, Team Premium, Enterprise pay-as-you-go, and the Anthropic API, and on Claude Platform on AWS, A
[Model configuration](/docs/en/model-config#available-models)
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claude-code
ultrareview
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claude-codechanged
ultrareview
Ultrareview is a deep code review that runs as a [cloud session](/docs/en/claude-code-on-the-web) on Anthropic's infrastructure. When you run `/code-review ultra`, Claude Code laun
Ultrareview is a deep code review that runs as a [cloud session](/docs/en/claude-code-on-the-web.md) on Anthropic's infrastructure. When you run `/code-review ultra`, Claude Code l
Ultrareview requires authentication with a claude.ai account because it runs as a cloud session on Anthropic's infrastructure. If you are signed in with an API key only, run `/logi
Ultrareview requires authentication with a claude.ai account because it runs as a cloud session on Anthropic's infrastructure. If you are signed in with an API key only, run `/logi
For a branch review, Claude Code bundles the repository state and uploads it to a cloud sandbox under the rules for [uploading a local repository to a cloud session](/docs/en/claud
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code-review-costs
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code-review-costs
[Code Review](/docs/en/code-review) has no flat per-review price. What you spend depends on the cost of each review and on how many reviews run:
[Code Review](/docs/en/code-review.md) has no flat per-review price. What you spend depends on the cost of each review and on how many reviews run:
* **Cost of each review**: scales with the [review level](/docs/en/code-review-setup#set-the-default-review-level), the size of the change, the complexity of the surrounding code,
* **Cost of each review**: scales with the [review level](/docs/en/code-review-setup.md#set-the-default-review-level), the size of the change, the complexity of the surrounding cod
A repository you add from the admin page starts at **After every push**, which runs the most reviews. Each repository's [**Review runs** setting](/docs/en/code-review-setup#set-whe
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claude-code
analytics
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claude-codechanged
analytics
Code Review has its own dashboard. For review activity and spend, see [View usage](/docs/en/code-review-costs#view-usage).
Code Review has its own dashboard. For review activity and spend, see [View usage](/docs/en/code-review-costs.md#view-usage).
For per-user token counts and cost estimates, configure [OpenTelemetry export](/docs/en/monitoring-usage), or export the [spend report](https://support.claude.com/en/articles/12883
For per-user token counts and cost estimates, configure [OpenTelemetry export](/docs/en/monitoring-usage.md), or export the [spend report](https://support.claude.com/en/articles/12
> Contribution metrics are not available for organizations with [Zero Data Retention](/docs/en/zero-data-retention) enabled. The analytics dashboard will show usage metrics only.
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agent-sdk/file-checkpointing
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agent-sdk/file-checkpointing
File checkpointing tracks file modifications made through the [Write](/docs/en/tools-reference#write-tool-behavior), [Edit](/docs/en/tools-reference#edit-tool-behavior), and [Noteb
File checkpointing tracks file modifications made through the [Write](/docs/en/tools-reference.md#write-tool-behavior), [Edit](/docs/en/tools-reference.md#edit-tool-behavior), and
> Only changes made through the Write, Edit, and NotebookEdit tools are tracked. Changes made through Bash commands (like `echo > file.txt` or `sed -i`) are not captured by the che
> Only changes made through the Write, Edit, and NotebookEdit tools are tracked. Changes made through Bash commands (like `echo > file.txt` or `sed -i`) are not captured by the che
The lead example under [Implement checkpointing](#implement-checkpointing) also sets the permission mode to `acceptEdits`, which approves the agent's file edits without a prompt. F
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<div className="digest-meta">
<span>Releases <a href="/docs/en/changelog#2-1-225">v2.1.225 → v2.1.233</a></span>
<span>3 features · August 10–14</span>
</div>
Releases [v2.1.225 → v2.1.233](/docs/en/changelog#2-1-225)
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<div className="digest-meta">
<span>Releases <a href="/docs/en/changelog#2-1-220">v2.1.220 → v2.1.224</a></span>
<span>3 features · August 3–7</span>
</div>
Releases [v2.1.220 → v2.1.224](/docs/en/changelog#2-1-220)
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<div className="digest-meta">
<span>Releases <a href="/docs/en/changelog#2-1-214">v2.1.214 → v2.1.219</a></span>
<span>3 features · July 20–24</span>
</div>
Releases [v2.1.214 → v2.1.219](/docs/en/changelog#2-1-214)
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ultrareview
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ultrareview
<Note>
Ultrareview is a research preview feature. The feature, pricing, and availability may change based on feedback. The command is `/code-review ultra`. When ultrareview is available
</Note>
> [!NOTE]
>
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<Note>
To change how thorough reviews are or when they run, ask an Owner to change the [review level](/docs/en/code-review-setup#set-the-default-review-level) or the [**Review runs** se
</Note>
> [!NOTE]
>
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checkpointing
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checkpointing
<Note>
If the prompt input contains text, double `Esc` clears it instead of opening the menu. The cleared text is saved to your input history, so press `Up` to recall it after you finis
</Note>
> [!NOTE]
>
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analytics
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analytics
<Note>
Contribution metrics are in public beta and available on Claude for Teams and Claude for Enterprise plans. These metrics only cover users within your claude.ai organization. Usag
</Note>
> [!NOTE]
>
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agent-sdk/file-checkpointing
<Warning>
Only changes made through the Write, Edit, and NotebookEdit tools are tracked. Changes made through Bash commands (like `echo > file.txt` or `sed -i`) are not captured by the che
</Warning>
> [!WARNING]
>
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<div><a href="/docs/en/code-review#review-a-diff-locally"><code>/code-review</code></a> at high, xhigh, and max effort now runs in a background agent like the other levels</div
<div><a href="/docs/en/code-review-local"><code>/code-review</code></a> at high, xhigh, and max effort now runs in a background agent like the other levels</div>
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<div><code>/review</code> is now an alias of <a href="/docs/en/code-review#review-a-diff-locally"><code>/code-review</code></a>, and <code>/code-review</code> with no effort le
<div><code>/review</code> is now an alias of <a href="/docs/en/code-review-local"><code>/code-review</code></a>, and <code>/code-review</code> with no effort level reuses the l
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<div><a href="/docs/en/code-review#review-a-diff-locally"><code>/code-review</code></a> now runs as a background subagent with its own context window, so review work stays out
<div><a href="/docs/en/code-review-local"><code>/code-review</code></a> now runs as a background subagent with its own context window, so review work stays out of your conversa
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web-quickstart
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web-quickstart
Organizations with [Zero Data Retention](/docs/en/zero-data-retention) enabled, or with the [HIPAA configuration](/docs/en/hipaa-setup) applied, cannot use `/web-setup` or other
Organizations with [Zero Data Retention](/docs/en/zero-data-retention) enabled, or with the [HIPAA configuration](/docs/en/hipaa-setup) applied, cannot use `/web-setup` or other
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ultrareview
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Ultrareview requires authentication with a claude.ai account because it runs as a cloud session on Anthropic's infrastructure. If you are signed in with an API key only, run `/logi
Ultrareview requires authentication with a claude.ai account because it runs as a cloud session on Anthropic's infrastructure. If you are signed in with an API key only, run `/logi
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skills
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skills
Claude Code expands the first skill plus up to five more stacked after it. Expansion stops at the first token that isn't an inline user-invocable skill, so a skill that runs as a [
Claude Code expands the first skill plus up to five more stacked after it. Expansion stops at the first token that isn't an inline user-invocable skill, so a skill that runs as a [
A forked skill that runs in the background applies its edits outside your session's [checkpoints](/docs/en/checkpointing), so `/rewind` doesn't undo them; use git to revert them.
A forked skill that runs in the background applies its edits outside your session's [checkpoints](/docs/en/checkpointing#subagent-edits-not-restored). After one, `/rewind` restores
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github-enterprise-server
Go to [claude.ai/admin-settings/claude-code](https://claude.ai/admin-settings/claude-code) and enable [Code Review](/docs/en/code-review#set-up-code-review) for your GHES repos
Go to [claude.ai/admin-settings/claude-code](https://claude.ai/admin-settings/claude-code) and enable [Code Review](/docs/en/code-review-setup) for your GHES repositories using
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desktop
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desktop
In any session, you can also ask Claude in the prompt box to fix what the review found. For what `/code-review` looks for and the arguments it takes, see [Review a diff locally](/d
In any session, you can also ask Claude in the prompt box to fix what the review found. For what `/code-review` looks for and the arguments it takes, see [Review locally with `/cod
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code-review-troubleshooting
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code-review-setup
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code-review-pull-requests
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code-review-local
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code-review-local
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Organizations with [Zero Data Retention](/docs/en/zero-data-retention) enabled, or with the [HIPAA configuration](/docs/en/hipaa-setup) applied, can't use `/web-setup` or other c
Organizations with [Zero Data Retention](/docs/en/zero-data-retention) enabled, or with the [HIPAA configuration](/docs/en/hipaa-setup) applied, can't use `/web-setup` or other c
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checkpointing
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checkpointing
* **Any other subagent**: rewinding doesn't restore the edits. Use git to revert them. This includes a forked skill that runs in the background, the default, and a background [`/co
* **Any other subagent**: rewinding restores only the files Claude had already edited in your conversation. The subagent's edits to other files stay, so use git to revert them. Thi
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analytics
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analytics
Code Review has its own dashboard. For review activity and spend, see [View usage](/docs/en/code-review-costs#view-usage).
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agent-sdk/file-checkpointing
| Subagent edits | Edits a [subagent](/docs/en/agent-sdk/subagents) applies aren't tracked or restored, except a skill with `context: fork` running in the foreground; use git to re
| Subagent edits | Edits a [subagent](/docs/en/agent-sdk/subagents) applies aren't tracked, except a skill with `context: fork` running in the foreground. A rewind reverts them onl
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<Update label="0.1.63" description="October 14, 2026">
* Tabs in the right pane are now all one width, and the tab you're viewing always shows its close button
* Newly saved artifacts now list more of their input files in Provenance when the code that created them read many files
* Linux: Claude Science now detects an NVIDIA GPU only if `nvidia-smi` can run without your `LD_LIBRARY_PATH` and is in `/usr/bin` or one of a few other fixed folders (`/usr/loca
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Next, create the script at `scripts/install_pkgs.sh`. It exits immediately outside the cloud, then installs your dependencies:
Next, create the script at `scripts/install_pkgs.sh`. It exits immediately outside the cloud, then installs your dependencies. It skips `npm install` while `package.json`, `package
npm install
cd "$CLAUDE_PROJECT_DIR" || exit 1
hashes=node_modules/.install_pkgs.sha256
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claude-science/overview
Claude Science is a desktop application that pairs Claude with an analysis environment on your computer. Available in beta on macOS, Windows, and Linux. You install it separately f
Claude Science is a desktop application that pairs Claude with an analysis environment on your computer. Available in beta on macOS, Windows, and Linux. You install it separately f
Claude Science isn't limited to the life sciences. Besides biology, chemistry, and clinical and medical research, it supports computer science and machine learning, engineering, ma
Claude Science isn't limited to the life sciences. Besides biology, chemistry, and clinical and medical research, it supports computer science and machine learning, engineering, ma
* **Remote compute.** For long-running or heavy analyses, Claude can run jobs on [a workstation or Slurm cluster you reach over SSH](/docs/claude-science/remote-compute-clusters.md
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claude-science/enable-claude-science
Claude Science is a desktop app for scientific research. It's off by default for Team and Enterprise organizations, and on by default for organizations on the [Claude Team plan for
Claude Science is a desktop app for scientific research. It's off by default for Team and Enterprise organizations, and on by default for organizations on the [Claude Team plan for
On the Claude Team plan for scientists, members can [download Claude Science](https://claude.com/product/claude-science) and sign in with their claude.ai account without any admin
On the Claude Team plan for scientists, members can [download Claude Science](https://claude.com/product/claude-science) and sign in with their claude.ai account without any admin
Review the [organization settings](/docs/claude-science/admin-controls.md#organization-settings) below the toggle, which unlock once Claude Science is on.\
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claude-science/overview
Claude Science is a desktop application that pairs Claude with an analysis environment on your computer. Available in beta on macOS, Windows, and Linux. You install it separately f
Claude Science is a desktop application that pairs Claude with an analysis environment on your computer. Available in beta on macOS, Windows, and Linux. You install it separately f
Claude Science isn't limited to the life sciences. Besides biology, chemistry, and clinical and medical research, it supports computer science and machine learning, engineering, ma
Claude Science isn't limited to the life sciences. Besides biology, chemistry, and clinical and medical research, it supports computer science and machine learning, engineering, ma
* **Remote compute.** For long-running or heavy analyses, Claude can run jobs on [a workstation or Slurm cluster you reach over SSH](/docs/claude-science/remote-compute-clusters),
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claude-science/enable-claude-science
Claude Science is a desktop app for scientific research. It's off by default for Team and Enterprise organizations, and on by default for organizations on the [Claude Team plan for
Claude Science is a desktop app for scientific research. It's off by default for Team and Enterprise organizations, and on by default for organizations on the [Claude Team plan for
On the Claude Team plan for scientists, members can [download Claude Science](https://claude.com/product/claude-science) and sign in with their claude.ai account without any admin
On the Claude Team plan for scientists, members can [download Claude Science](https://claude.com/product/claude-science) and sign in with their claude.ai account without any admin
Review the [organization settings](/docs/claude-science/admin-controls#organization-settings) below the toggle, which unlock once Claude Science is on.\
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<Note>
Claude can make mistakes. The reviewer reduces, but doesn't eliminate, errors. It checks claims against the execution record and doesn't re-run analyses. Verify results before re
</Note>
> [!NOTE]
>
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* A Claude account on a Pro, Max, Team, or Enterprise plan. On Team and Enterprise plans, an Owner must [enable Claude Science for the organization](/docs/claude-science/enable-cla
* A Claude account on a Pro, Max, Team, or Enterprise plan. The [Claude Team plan for scientists](https://claude.com/programs/team-plan-for-scientists) has Claude Science on by def
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Install Claude Science on your computer, sign in with your Claude account, and run your first analysis. You need a Claude Pro, Max, Team, or Enterprise plan, and on Team and Enterp
Install Claude Science on your computer, sign in with your Claude account, and run your first analysis. You need a Claude Pro, Max, Team, or Enterprise plan. The [Claude Team plan
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Claude Science is a desktop app for scientific research. It's off by default for Team and Enterprise organizations. Turning it on in **Organization settings** > **Claude Science**
Claude Science is a desktop app for scientific research. It's off by default for Team and Enterprise organizations, and on by default for organizations on the [Claude Team plan for
| Claude Team plan for scientists | On; turn off in **Organization settings** |
If your organization has HIPAA compliance enabled, Claude Science app access is also off by default. You can turn it on, but usage isn't covered under your Business Associate Agree
On the Claude Team plan for scientists, members can [download Claude Science](https://claude.com/product/claude-science) and sign in with their claude.ai account without any admin
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claude-science/admin-controls
The [**Organization settings** > **Claude Science**](https://claude.ai/admin-settings/claude-science) page in claude.ai holds the controls that apply to every member of your Team o
The [**Organization settings** > **Claude Science**](https://claude.ai/admin-settings/claude-science) page in claude.ai holds the controls that apply to every member of your Team o
In the **Featured connectors** list, the rows marked **Web** (PubMed, Clinical Trials, ChEMBL, and bioRxiv) are connectors Anthropic hosts in the Claude connector directory rather
In the **Featured connectors** list, the rows marked **Web** (PubMed, Clinical Trials, ChEMBL, and bioRxiv) are connectors Anthropic hosts in the Claude connector directory rather
| Claude Science > Enable for your organization | Supported in Claude Science | Off by default for Team and Enterprise. An Owner or Primary Owner turns it on under **Organization s
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> Enterprise Managed Auth is available on Claude Team and Enterprise plans. After your authorization server supports it, email `[email protected]` to have [your directory li
> Enterprise Managed Auth is available on Claude Team and Enterprise plans. After your authorization server supports it, email `[email protected]` to have [your directory li
Enterprise Managed Auth also works with [lazy authentication](/docs/connectors/building/lazy-authentication.md). When your server returns `401 Unauthorized` for a protected tool ca
Enterprise Managed Auth also works with [lazy authentication](https://claude.com/docs/connectors/building/lazy-authentication.md). When your server returns `401 Unauthorized` for a
Your MCP server returns the same `401` with a `WWW-Authenticate` header as described in the [lazy authentication guide](/docs/connectors/building/lazy-authentication.md#answer-a-pr
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> Enterprise Managed Auth is available on Claude Team and Enterprise plans. After your authorization server supports it, email `[email protected]` to have [your directory li
> Enterprise Managed Auth is available on Claude Team and Enterprise plans. After your authorization server supports it, email `[email protected]` to have [your directory li
Enterprise Managed Auth also works with [lazy authentication](/docs/connectors/building/lazy-authentication). When your server returns `401 Unauthorized` for a protected tool call,
Enterprise Managed Auth also works with [lazy authentication](/docs/connectors/building/lazy-authentication.md). When your server returns `401 Unauthorized` for a protected tool ca
Your MCP server returns the same `401` with a `WWW-Authenticate` header as described in the [lazy authentication guide](/docs/connectors/building/lazy-authentication#answer-a-prote
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<Note>
Enterprise Managed Auth is available on Claude Team and Enterprise plans. After your authorization server supports it, email `[email protected]` to have [your directory li
</Note>
> [!NOTE]
>
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Enterprise Managed Auth is available on Claude Team and Enterprise plans. MCP server developers and identity provider vendors can [register interest](https://docs.google.com/form
Enterprise Managed Auth is available on Claude Team and Enterprise plans. After your authorization server supports it, email `[email protected]` to have [your directory li
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* **Your organization's optional plugins**: the ones you had turned on are turned on again, if they come from your organization's plugins directory or from a marketplace hosted at
* **Your organization's optional plugins**: the ones you had turned on are turned on again, if they come from your organization's plugins directory or from a marketplace hosted at
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Update devices to Claude Desktop 2.37337.1 or later. Earlier releases migrate fewer items.
Update devices to Claude Desktop 2.42304.0 or later. Earlier releases migrate fewer items.
* Scheduled tasks from Cowork and Code, except one-time tasks
* Scheduled tasks from Cowork and Code, except one-time tasks whose time has passed
* Optional organization plugins that users turned on from other marketplaces, such as a git repository, if you offer the marketplace from the same repository or URL as your earlier
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| You turned [feature-flag fetching](/docs/en/env-vars#features-that-need-feature-flag-fetching) off | Asks before the first publish of each artifact |
* **Plan mode, or feature-flag fetching turned off**: in [plan mode](/docs/en/permission-modes#analyze-before-you-edit-with-plan-mode), or if you turned [feature-flag fetching](/do
* **Plan mode**: in [plan mode](/docs/en/permission-modes#analyze-before-you-edit-with-plan-mode), Claude Code asks before the Artifact tool reads an artifact someone else in your
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#### Control characters in injected commands
`No shell command in <name> was run` means one of the file's `!` commands contains a raw control character other than tab or newline, so none of them runs. See [how to find and rem
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| `--sandbox`, `--no-sandbox` | Removed in v2.1.300. If you pass either flag, the server [exits with an error](/docs/en/errors#sandbox-is-not-supported-by-claude-remote-control
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* If an `Instruction file not loaded` notice appears, see [what it means and what to do about it](/docs/en/errors#instruction-file-not-loaded).
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Before v2.1.299, some connections to HTTP servers that were up timed out at startup regardless of `MCP_TIMEOUT`. If you use one of those versions and an HTTP server that is up
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To change the limits for every MCP server in your session, set [`CLAUDE_CODE_MAX_MCP_DESCRIPTION_LENGTH`](/docs/en/env-vars#variables) to a number of characters. The number you set
Descriptions and instructions from some of the MCP servers that Anthropic hosts at `api.anthropic.com` reach Claude in full. To change the limits for the other MCP servers in your
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| `Remote Control could not renew this computer's connection` | [Authentication](#remote-control-could-not-renew-this-computers-connection) |
| `--sandbox is not supported by claude remote-control` / `--no-sandbox is not supported by claude remote-control` | [Command-line errors](#sandbox-is-not-supported-by-claude-remot
| `No shell command in <name> was run, because the <tool> tool does not accept one of them` | [Command-line errors](#no-shell-command-was-run) |
| `Instruction file not loaded` | [Configuration warnings](#instruction-file-not-loaded) |
| `"<name>" is a reserved MCP server name and was not loaded` | [Configuration warnings](#mcp-server-name-is-reserved) |
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* **You turn off the WebFetch tool with [`CLAUDE_CODE_DISABLE_WEB_FETCH`](/docs/en/env-vars#variables) or a `WebFetch` [deny rule](/docs/en/permissions#tool-specific-permission-r
To stop them for every mod your users install, [keep user-installed mods from loading](#stop-user-installed-mods-from-loading), or hook `http.fetch` in a [policy mod](#enforce-
Neither covers a program the mod starts with `$.process.run`, which reaches the network with the user's own access.
None of these covers a program the mod starts with `$.process.run`, which reaches the network with the user's own access.
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### Plugins that draw in the panel
A plugin that contains a [mod](/docs/en/plugins/mods/overview) can draw in the chat panel. Drawing requires extension version 2.1.299 or later and a session that [fetches feature f
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