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
812pages tracked
765 changed this week · last read 23 Oct 2026
Claude Code CLI
228pages tracked
147 changed this week · last read 23 Oct 2026
Claude Documentation
280pages tracked
77 changed this week · last read 23 Oct 2026
Model Context Protocol
357pages tracked
171 changed this week · last read 22 Oct 2026
100 on this page
5,591 of the ledger's changes in claude-code. Show every change
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1 Oct 2026
90 pages
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claude-code
agent-sdk/agent-loop
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agent-sdk/agent-loop
* **Use subagents for subtasks.** Each subagent starts with a fresh conversation (no prior message history, though it does load its own system prompt and project-level context like
* **Use subagents for subtasks.** Each subagent starts with a fresh conversation (no prior message history, though it does load its own system prompt and project-level context like
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debug-your-config
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debug-your-config
Run `/hooks` to list every hook registered for the current session, grouped by event. If a hook you defined doesn't appear, it isn't being read: hooks go under the `"hooks"` key in
Run `/hooks` to list every hook registered for the current session, grouped by event. If a hook you defined doesn't appear, Claude Code didn't load it. Check for these causes:
* The hook is defined in a standalone file. Hooks go under the `"hooks"` key in a [settings file](/docs/en/settings#settings-files).
* The `matcher` value is an array instead of a single string. Claude Code lists the entry as an invalid setting when you start an interactive session and in `claude doctor`. If the
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claude-code
plugins/mods/troubleshoot
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plugins/mods/troubleshoot
### `no command.run hook answered it`
You run a command your mod added, and the reply names the mod and the command, as in `first-mod registered /tally but no command.run hook answered it`, then tells you to add a hook
* **No hook answered the command**: the module has no `command.run` hook, the hook's [filter](/docs/en/plugins/mods/events#filter-which-events-a-hook-handles) names a different com
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plugins/mods/interface
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plugins/mods/interface
| `closeOnEscape` | Makes Esc close the pane. Pass `true` or leave the field out, because Claude Code refuses `false`. |
| `closeOnEscape` | Makes Esc close the pane |
`focus`, `closeOnEscape`, and `holdToasts` are optional and accept only `true`. To leave one off, omit it. Passing `false` throws an error such as `ui.open: focus is true or left o
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costs
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costs
* **Add custom compaction instructions**: `/compact Focus on code samples and API usage` tells Claude what to preserve during summarization. In a fresh session, `/compact` prints `
* **Add custom compaction instructions**: `/compact Focus on code samples and API usage` tells Claude what to preserve during summarization.
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agent-sdk/skills
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agent-sdk/skills
A `compact_boundary` message only arrives when compaction ran. With nothing to summarize, `/compact` reports the reason instead of raising. The run still ends with a `success` re
A `compact_boundary` message only arrives when compaction ran. When a continued session has messages but nothing `/compact` can summarize, the run still ends with a `success` res
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routines
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routines
In the **Update cloud environment** dialog, change **Network access** to **Custom** and enter your domains in **Allowed domains**. Check **Also include default list of common p
In the **Edit cloud environment** dialog, change **Network access** to **Custom** and enter your domains in **Allowed domains**. Check **Also include default list of common pac
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errors
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errors
| `The safety check for domain ... is rate-limited` | [Tool errors](#webfetch-domain-safety-check-failed) |
| `The safety check for domain ... is temporarily rate-limited` | [Tool errors](#webfetch-domain-safety-check-failed) |
| `Unable to verify if domain ... is safe to fetch` | [Tool errors](#webfetch-domain-safety-check-failed) |
* Open the routine for editing, or start a cloud session. Select the cloud icon showing your environment's name, such as **Default**, to open the selector. Hover over your environm
* In the **Update cloud environment** dialog, change **Network access** from **Trusted** to **Custom**, then add the blocked domain to **Allowed domains**. Enter one domain per lin
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desktop
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desktop
You can create custom cloud environments with different network access levels and environment variables. When you start a cloud session, open the environment dropdown in the prompt
You can create custom cloud environments with different network access levels and environment variables. To manage them, open the environment dropdown in the prompt box and select
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cloud-environments
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cloud-environments
Select **Add cloud environment**, or hover over an existing environment and select the settings icon that appears on the right. The dialog includes the name, network access lev
Select **Cloud** to list your environments. Then select **Add cloud environment**, or hover over an existing environment and select the settings icon that appears on the right.
The dialog includes the name, network access level, environment variables, and setup script. When you edit an existing cloud environment on a Pro or Max plan, the dialog also i
* Without it, you see a note instead of the credential list, on your own environments too. Ask an Owner to add the credential to a shared environment and run your sessions there
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plugins/anthropic-marketplaces
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plugins/anthropic-marketplaces
> * **How to install a plugin**: see [Install plugins](/docs/en/plugins/install)
> * **A failed install**: see [Troubleshoot plugins](/docs/en/plugins/troubleshooting)
> * **How to install a plugin**: see [Install plugins](/docs/en/plugins/install.md)
> * **A failed install**: see [Troubleshoot plugins](/docs/en/plugins/troubleshooting.md)
| How you get it | Claude Code adds it the first time you start an interactive terminal session, unless a [managed policy](/docs/en/plugins/org#allow-the-official-marketplace-and-y
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plugins/anthropic-marketplaces
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plugins/anthropic-marketplaces
<Note>
These cases are covered on other pages:
* **How to install a plugin**: see [Install plugins](/docs/en/plugins/install)
* **A failed install**: see [Troubleshoot plugins](/docs/en/plugins/troubleshooting)
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plugins/overview
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plugins/overview
To try a plugin now, run `/plugin` in a Claude Code terminal session and install one from the **Discover** tab, which lists the plugins from Anthropic's official marketplace and an
To try a plugin now, run `/plugin` in a Claude Code terminal session and install one from the **Discover** tab, which lists the plugins from your marketplaces. From there:
Claude Code adds Anthropic's official marketplace the first time you start an interactive terminal session, unless a [managed policy](/docs/en/plugins/org#allow-the-official-market
Claude Code adds Anthropic's official marketplace the first time you start an interactive terminal session, unless a [managed policy](/docs/en/plugins/org#allow-the-official-market
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plugins/install
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plugins/install
To browse instead, run `/plugin` with no plugin name: the panel opens on the **Discover** tab, which lists plugins from every marketplace you've added, and you can type to
To browse instead, run `/plugin` with no plugin name: the panel opens on the **Discover** tab, which lists the plugins from your marketplaces, and you can type to search, t
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plugins/anthropic-marketplaces
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plugins/anthropic-marketplaces
If a tutorial or an older set of instructions tells you to run `/plugin marketplace add anthropics/claude-code`, that adds the demo marketplace, named `claude-code-plugins`. It isn
If a tutorial or an older set of instructions tells you to run `/plugin marketplace add anthropics/claude-code`, that adds the demo marketplace, named `claude-code-plugins`. It isn
The official marketplace, `claude-plugins-official`, is the one Claude Code adds for you. Most of what it lists comes from partners and other authors rather than from Anthropic: to
By default, Claude Code adds the official marketplace, `claude-plugins-official`, for you. Most of what it lists comes from partners and other authors rather than from Anthropic: t
* **In Claude Code, by browsing**: run `/plugin` in an interactive session. Its **Discover** tab lists the plugins from the marketplaces you've added.
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tools-reference
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tools-reference
### WebFetch availability
On Claude Code v2.1.285 or later, set [`CLAUDE_CODE_DISABLE_WEB_FETCH`](/docs/en/env-vars#variables) to `1` to turn WebFetch off.
If you sign in with a Team or Enterprise claude.ai account and don't connect through an [LLM gateway](/docs/en/llm-gateway), WebFetch also depends on your organization's policy, wh
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plugins/mods/reference
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plugins/mods/reference
The complete reference is the set of TypeScript declarations that Claude Code writes for your version. Their comments describe every event, field, method, and element, with example
To open them, load a mod with `claude --plugin-dir`, as in `claude --plugin-dir ./first-mod`, then open `.claude-plugin/types/claude-code/index.d.ts` in the mod's directory. [Get t
<Note>
The complete reference is Claude Code's [TypeScript declarations for mods](https://github.com/anthropics/claude-code/blob/main/mods/types/claude-code.d.ts), which describe every
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plugins/mods/overview
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plugins/mods/overview
| The Code tab of the Desktop app | Yes | Yes, except elements the [elements table](/docs/en/plugins/mods/reference#elements) marks terminal-only |
| The Code tab of the Desktop app, except in a WSL session | Yes | Yes, except elements the [elements table](/docs/en/plugins/mods/reference#elements) marks terminal-only |
| A [WSL session](/docs/en/desktop-wsl) in the Desktop app | No, because plugins aren't available in WSL sessions | No |
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plugins/mods/interface
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plugins/mods/interface
Claude Code limits how often it redraws, so your mod can call `$.ui.invalidate` as often as its data changes:
| Site | Redraws a second, at most |
| :- | :- |
| The visible pane and the band | 30 |
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plugins/mods/create
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plugins/mods/create
Each time Claude Code loads or reloads a mod from a directory you pass to `--plugin-dir`, or a mod [Claude wrote for you](#ask-claude-for-a-mod), it writes TypeScript declaration f
Each time Claude Code loads or reloads a mod from a directory you pass to `--plugin-dir`, or a mod [Claude wrote for you](#ask-claude-for-a-mod), it writes TypeScript declaration f
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changelog
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changelog
* Added You should know, an opt-in plugin where a side agent watches your back and flags things you or Claude might miss. Turn it on with `/plugin enable cc-plugin-you-should-kno
* Added You should know, a built-in mod where a side agent watches your back and flags things you or Claude might miss. Turn it on with `/plugin enable cc-plugin-you-should-know@
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plugins/mods/overview
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plugins/mods/overview
| `cc-plugin-you-should-know` | Runs a side agent that watches your back while Claude works on longer tasks. When it finds something worth knowing that you might miss, it shows you
The source of these mods is public in the [`mods` directory of the Claude Code repository](https://github.com/anthropics/claude-code/tree/main/mods). Each one is a complete plugin
The source of four of these mods is public in the [`mods` directory of the Claude Code repository](https://github.com/anthropics/claude-code/tree/main/mods). Each one is a complete
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changelog
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changelog
<Update label="2.1.287" description="October 1, 2026">
* Added Claude Mods: plugins may now modify deeper behavior
* Added You should know, an opt-in plugin where a side agent watches your back and flags things you or Claude might miss. Turn it on with `/plugin enable cc-plugin-you-should-kno
* Added an `n:<text>` filter to the agents view that matches session names and tasks; a filter now shows matches in collapsed sections and Enter opens the first match
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plugins/mods/troubleshoot
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plugins/mods/troubleshoot
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plugins/mods/test
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plugins/mods/test
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plugins/mods/reference
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plugins/mods/overview
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plugins/mods/interface
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plugins/mods/events
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plugins/mods/events
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plugins/mods/create
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plugins/mods/api
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plugins/mods/admin
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plugins/marketplace-reference
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plugins/marketplace-reference
| `Plugin name "x" is reserved: it passes as one of Anthropic's own` | Error | `plugins[i].name`. See the manifest's [`name`](/docs/en/plugins/manifest-reference#name) for the rese
| `Plugin name "x" reads as one of Anthropic's own` | Warning | `plugins[i].name` |
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plugins/manifest-reference
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plugins/manifest-reference
| `types` | Path | A `.d.ts` file that declares the `$.state` values and `$` nouns of a [mod](/docs/en/plugins/mods/reference#files) |
`claude plugin validate` also checks that the name doesn't pass as one of Anthropic's own plugins. The check ignores case and treats any run of separators as one:
| Name | Result |
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plugins/components
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plugins/components
To write hooks as JavaScript functions that run inside Claude Code and can draw in its interface, list a module file under a `modules` key in the same `hooks/hooks.json`. A plugin
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permissions
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permissions
Hook decisions don't bypass permission rules. Claude Code evaluates deny and ask rules regardless of what a PreToolUse hook returns: a matching deny rule blocks the call, and a mat
PreToolUse hook decisions don't bypass permission rules. Claude Code evaluates deny and ask rules regardless of what a PreToolUse hook returns: a matching deny rule blocks the call
That precedence covers hooks in settings files and in a plugin's `hooks/hooks.json`. A [mod](/docs/en/plugins/mods/overview) you install that hooks `tool.check` answers after the r
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permission-modes
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permission-modes
A [mod](/docs/en/plugins/mods/overview) you install that hooks `tool.check` can approve an action before step 3, and the classifier doesn't check an action the mod approves. Se
* A directory you loaded with [`--plugin-dir`](/docs/en/plugins/mods/create#change-a-mod-with-claude), because Claude Code reloads and runs a mod's code from it when a file changes
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hooks-guide
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hooks-guide
The reverse is not true: a hook returning `"allow"` doesn't bypass deny rules from settings, and it can't suppress the prompt for MCP tools marked [`requiresUserInteraction`](/docs
The reverse is not true: a hook returning `"allow"` doesn't bypass deny rules from settings, and it can't suppress the prompt for MCP tools marked [`requiresUserInteraction`](/docs
A [mod](/docs/en/plugins/mods/overview) you install that hooks `tool.check` can approve a call that your `PreToolUse` hook blocked, unless the hook is in managed settings. [Extend
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hooks
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hooks
A plugin can also register hooks as JavaScript functions that Claude Code calls in its own process, which can draw in the interface as well as act on events. A plugin that does is
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claude-directory
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claude-directory
| `dev-mods/<session>/` | [Mods that Claude wrote](/docs/en/plugins/mods/create#ask-claude-for-a-mod) during the session |
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settings-reference
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settings-reference
| [`appendPlugins`](#appendplugins) | Run your organization's [mods](/docs/en/plugins/mods/admin) after every mod a user installs | Plugins and skills | User or managed |
| [`prependPlugins`](#prependplugins) | Run your organization's [mods](/docs/en/plugins/mods/admin) before every mod a user installs | Plugins and skills | User or managed |
* **Force-enabled plugin hooks run**: hooks from plugins your managed settings force-enable through [`enabledPlugins`](#enabledplugins). Claude Code matches on the full `plugin@mar
* **Everything else is blocked**: user, project, and local hooks, hooks from other plugins, and hooks declared in agent frontmatter
* **Force-enabled plugin hooks run**: hooks from plugins your managed settings force-enable through [`enabledPlugins`](#enabledplugins). Claude Code matches on the full `plugin@mar
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plugins/troubleshooting
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plugins/troubleshooting
| `Plugin name "<name>" is reserved: it passes as one of Anthropic's own` | The plugin's `name` is one of the [reserved names](/docs/en/plugins/manifest-reference#name). | Rename t
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plugins/security
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plugins/security
* **Mods**: a plugin's [mod](/docs/en/plugins/mods/overview) runs JavaScript inside Claude Code with your permissions. To list what a mod does before you install it, see [Decide wh
* **Claude's tool calls**: a call to one of the plugin's MCP tools, and a Bash command that runs an executable from the plugin's `bin/`, are tool calls, so your permission rules ap
* **Claude's tool calls**: a call to one of the plugin's MCP tools, and a Bash command that runs an executable from the plugin's `bin/`, are tool calls, so your permission rules ap
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plugins/overview
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plugins/overview
* [**A hooks module**](/docs/en/plugins/mods/overview): hooks written as JavaScript functions, which can also draw panes and add commands. A plugin that has one is called a mod
This diagram shows a plugin named `my-plugin` that holds one of each of those components, and what you get from each file once the plugin loads.
This diagram shows a plugin named `my-plugin` that holds a skill, an agent, hooks, and an MCP server, and what you get from each file once the plugin loads.
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plugins/org
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plugins/org
Every key in the table is a managed setting, apart from `enabledPlugins`, `syncClaudeAiPlugins`, and `CLAUDE_CODE_DISABLE_OFFICIAL_MARKETPLACE_AUTOINSTALL`:
| [`allowManagedModsOnly`](/docs/en/plugins/mods/admin#stop-user-installed-mods-from-loading) | Stops every installed [mod](/docs/en/plugins/mods/overview) that doesn't [count as y
Every key in the table is a managed setting, apart from `enabledPlugins`, `syncClaudeAiPlugins`, `CLAUDE_CODE_DISABLE_OFFICIAL_MARKETPLACE_AUTOINSTALL`, and `allowManagedModsOnly`:
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desktop-linux
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desktop-linux
### Your sign-in won't be saved on this device
Claude Desktop saves your sign-in in your desktop's keyring, such as GNOME Keyring or KDE Wallet. If it can't reach an unlocked keyring, your sign-in isn't saved and you sign in ag
* **No keyring installed, on a desktop other than KDE Plasma**: if you installed with `--no-install-recommends`, or on a minimal image that skips recommended packages, apt didn't i
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agent-sdk/typescript
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agent-sdk/typescript
| `getContextUsage(opts?)` | Returns an [`SDKControlGetContextUsageResponse`](#sdkcontrolgetcontextusageresponse) breaking down the session's context window usage by category, skil
| `getContextUsage(opts?)` | Returns an [`SDKControlGetContextUsageResponse`](#sdkcontrolgetcontextusageresponse) breaking down the session's context window usage by category, skil
The method's optional `detail` argument chooses how Claude Code counts each category. With the default, `'full'`, Claude Code counts each category with token-counting API requests.
The method's optional `detail` argument chooses how Claude Code counts each category. The `detail` argument requires Agent SDK v0.3.257 or later.
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agent-sdk/python
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agent-sdk/python
async def get_context_usage(self) -> ContextUsageResponse
| `get_context_usage()` | Get a breakdown of context window usage by category, skill, and tool. The same data `/context` shows in an interactive session. Returns [`ContextUsageResp
### `ContextUsageResponse`
Response from [`ClaudeSDKClient.get_context_usage()`](#methods). This is the same payload Claude Code renders for the `/context` command in an interactive session, so alongside the
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claude-tag
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model-config
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model-config
| **`sonnet[1m]`** | Uses Sonnet with a [1 million token context window](https://platform.claude.com/docs/en/build-with-claude/context-windows#context-window-sizes-by-model) for lo
| **`sonnet[1m]`** | Uses Sonnet with a [1 million token context window](https://platform.claude.com/docs/en/build-with-claude/context-windows#context-window-sizes-by-model) for lo
<span id="context-window-behind-a-gateway" />
If you set `ANTHROPIC_BASE_URL` to an [LLM gateway](/docs/en/llm-gateway) or another proxy, Claude Code gives each model it recognizes the same context window the model has on the
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context-window
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context-window
Sonnet 5.5 and Sonnet 5 run with the 1M context window and have no `[1m]` variant to select. See [Sonnet 5.5 and Sonnet 5 context window](/docs/en/model-config#sonnet-5-5-and-sonne
Sonnet 5.5 and Sonnet 5 run with the 1M context window and have no `[1m]` variant to select. See [Sonnet 5.5 and Sonnet 5 context window](/docs/en/model-config#sonnet-5-5-and-sonne
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agent-sdk/python
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agent-sdk/python
`query()` also accepts an async iterable of user message dicts, so you can assemble the prompt at send time or include content blocks such as images. Claude Code starts responding
"""Generate messages dynamically."""
"""Assemble the prompt at send time and yield it as one user message."""
readings = {"Temperature": "25°C", "Humidity": "60%"}
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agent-sdk/hooks
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agent-sdk/hooks
To confirm the block, register the callback under `PreToolUse` with a `Write|Edit` matcher and ask the agent to create a file under `/etc`: the Write tool's result in the message s
The example below registers three independent checks for every tool call:
The example below registers three independent checks for every tool call. The hook names in it, such as `audit_logger` in Python or `auditLogger` in TypeScript, stand in for callba
Use multi-tool matchers to share one callback across related tools. This example registers three matchers with different scopes:
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worktrees
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worktrees
Claude Code writes a marker into the git metadata of every worktree it creates with git, and the sweep keeps any worktree without one, including a worktree a [`WorktreeCreate` hook
Claude Code writes a marker into the git metadata of every worktree it creates with git, and the sweep keeps any worktree without one, including a worktree a [`WorktreeCreate` hook
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ultrareview
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ultrareview
For repositories on `github.com`, the sandbox clones with the GitHub account connected to your Claude account, so the account must be able to read the PR's repository. Claude Code
For repositories on `github.com`, the sandbox clones with the GitHub account connected to your Claude account, so the account must be able to read the PR's repository.
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tools-reference
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tools-reference
* **Bash, PowerShell, and Monitor**: Claude Code keeps Bash, PowerShell, and Monitor tool commands under the cap whatever you list
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settings-reference
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settings-reference
Add your own tips to the [spinner tips](#spinnertipsenabled) that Claude Code shows while Claude works, or replace the built-in tips with yours. Claude Code puts your tips in the s
Add your own tips to the [spinner tips](#spinnertipsenabled) that Claude Code shows while Claude works, or replace the built-in tips with yours. Claude Code puts your tips in the s
Tip objects, `tipsFile`, `label`, and the Scope line's rule that project and local settings contribute plain strings only require Claude Code v2.1.247 or later. On earlier versions
Tip objects, `tipsFile`, `label`, and the Scope line's rule that project and local settings contribute plain strings only require Claude Code v2.1.247 or later.
* `true`: Claude Code turns the Artifact tool off for every session the file applies to, and no other file turns it back on. Before v2.1.242, a higher-precedence file could overr
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self-hosted-environments
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self-hosted-environments
* **Claude Tag channel sessions**: Claude runs them with no user account attached, so the owner is the [Claude Tag agent](https://claude.com/docs/claude-tag/concepts/glossary#agent
* **Claude Tag channel sessions**: Claude runs them with no user account attached, so the owner is the [Claude Tag agent](https://claude.com/docs/claude-tag/concepts/glossary#agent
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scheduled-tasks
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scheduled-tasks
Dynamically chosen intervals and the [built-in maintenance prompt](#run-the-built-in-maintenance-prompt) work on every provider, and with [feature-flag fetching](/docs/en/env-var
Dynamically chosen intervals and the [built-in maintenance prompt](#run-the-built-in-maintenance-prompt) work on every provider, and with [feature-flag fetching](/docs/en/env-var
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permissions
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permissions
| Inline [`mcpServers`](/docs/en/sub-agents#scope-mcp-servers-to-a-subagent) in the frontmatter of a subagent from the repository or an `--add-dir` directory. Before v2.1.238, Clau
| Inline [`mcpServers`](/docs/en/sub-agents#scope-mcp-servers-to-a-subagent) in the frontmatter of a subagent from the repository or an `--add-dir` directory | Not used, and no dia
| A [`headersHelper`](/docs/en/mcp#trust-a-folder-before-its-headershelper-runs) on a server in `.mcp.json`. Before v2.1.238, Claude Code ran the helper in both situations | Not ru
| A [`headersHelper`](/docs/en/mcp#trust-a-folder-before-its-headershelper-runs) on a server in `.mcp.json` | Not run until you accept the trust dialog, which appears again naming
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network-config
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network-config
| `*.frame.claudeusercontent.com` | [Artifact](/docs/en/artifacts) content reads. The CLI fetches an artifact's files from this host when Claude opens one, and only when the Artifa
| `*.frame.claudeusercontent.com` | [Artifact](/docs/en/artifacts) content reads. The CLI fetches an artifact's files from this host when Claude opens one, and only when the Artifa
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mcp
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mcp
* `⊘ Disabled for this project (re-enable via /mcp)`: a server that the project's [`disabledMcpServers`](#disable-a-server-without-removing-it) list names. Claude Code shows it in
* `⊘ Disabled for this project (re-enable via /mcp)`: a server that the project's [`disabledMcpServers`](#disable-a-server-without-removing-it) list names. Claude Code shows it in
When an HTTP or SSE server's first connection fails with a transient error, such as a 5xx response, a connection refused, or a timeout, Claude Code retries up to three times. If th
When an HTTP or SSE server's first connection fails with a transient error, such as a 5xx response, a connection refused, or a timeout, Claude Code retries up to three times. If th
Claude Code runs the checks after the [root-level combinator rewrite](#tool-input-schemas-with-a-root-level-combinator), on the schema it would actually send.
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llm-gateway-protocol
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llm-gateway-protocol
* `Authorization`: `ANTHROPIC_AUTH_TOKEN` as a bearer token, otherwise the [`apiKeyHelper`](/docs/en/llm-gateway-connect#rotate-credentials-with-apikeyhelper) value as a bearer tok
* `Authorization`: `ANTHROPIC_AUTH_TOKEN` as a bearer token, otherwise the [`apiKeyHelper`](/docs/en/llm-gateway-connect#rotate-credentials-with-apikeyhelper) value as a bearer tok
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keybindings
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keybindings
Before v2.1.247, pressing a Ctrl shortcut under a non-Latin layout didn't trigger its binding in terminals that use the Kitty keyboard protocol, such as Ghostty, Kitty, WezTerm, an
* Unknown action names, such as a typo of a registered action. Claude Code skips the binding and keeps any default binding for that key in effect. Before v2.1.246, a binding with a
* Unknown action names, such as a typo of a registered action. Claude Code skips the binding and keeps any default binding for that key in effect.
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hooks
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hooks
| `Bash(cat *)` | `echo before $(date) after` | no | a substitution can sit at any argument position, so the full command and `date` are both checked; neither matches `cat *` |
| `Bash(git *)` | `$TOOL git push` | yes | Claude Code can't tell what the command name expands to, so it runs the hook |
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errors
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errors
| `Claude Code's fullscreen renderer didn't finish starting last time on this machine` / `Claude Code's fullscreen renderer has repeatedly failed to start on this machine` | [Confi
| `Claude Code's fullscreen renderer didn't finish starting last time on this machine` / `Claude Code's fullscreen renderer has repeatedly failed to start on this machine` | [Fulls
Claude Code matches these hosts by URL, so the message appears when a server you added with `claude mcp add` or in `.mcp.json` points at one of them.
Before v2.1.251, Claude Code loaded a `commands` path declared in a marketplace entry even when it pointed outside the plugin directory. Claude Code already rejected paths declared
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costs
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costs
* **Misses**: requests that re-processed content the cache already held, with the time of the last miss and how many tokens those requests wrote back to the cache. Claude Code coun
* **Misses**: requests that re-processed content the cache already held, with the time of the last miss and how many tokens those requests wrote back to the cache. [Actions that in
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auto-mode-config
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auto-mode-config
To view and edit classifier rules without opening a settings file, run [`/permissions`](/docs/en/permissions#manage-permissions) and select the **Auto mode** tab. The tab requires
The tab lists the `allow`, `soft_deny`, `hard_deny`, and `environment` entries from each of the [scopes the classifier reads](#where-the-classifier-reads-configuration), and shows
* Add, edit, or delete rules in the `allow`, `soft_deny`, and `hard_deny` sections. When you add the first rule to a section, Claude Code also inserts `"$defaults"` so the [built-i
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artifacts
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artifacts
Once you turn artifacts off in a [`--settings`](/docs/en/cli-reference#cli-flags) file or with `CLAUDE_CODE_DISABLE_ARTIFACT`, or your administrator turns them off in [managed sett
Once you turn artifacts off in a [`--settings`](/docs/en/cli-reference#cli-flags) file or with `CLAUDE_CODE_DISABLE_ARTIFACT`, or your administrator turns them off in [managed sett
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agent-view
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agent-view
#### Terminal host died
On Linux and WSL, the supervisor checks each host process every few seconds, whether or not you open the session, and marks the session failed when the process has exited but its c
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permission-modes
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permission-modes
| `claude -p`, or the [Python Agent SDK](/docs/en/agent-sdk/python#claudeagentoptions) without `permission_mode` | `default` in sessions that [fetch feature flags](/docs/en/env-var
| `claude -p` or the [Agent SDK](/docs/en/agent-sdk/permissions#permission-modes) | `default` in sessions that [fetch feature flags](/docs/en/env-vars#features-that-need-feature-fl
The session's first auto-mode request validates the Sonnet 5 default: if the request succeeds, Sonnet 5 stays the session's classifier model, and if it fails because the model
The session's first auto-mode request validates the Sonnet 5 default: if the request succeeds, Sonnet 5 stays the session's classifier model, and if it fails because the model
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agent-sdk/typescript
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| `permissionMode` | [`PermissionMode`](#permissionmode) | `'default'` | Permission mode for the session |
| `permissionMode` | [`PermissionMode`](#permissionmode) | `undefined` | Permission mode for the session. If you omit it, the session can start in auto mode. See [Permission modes]
| `toggleMcpServer(serverName, enabled)` | Enable or disable an MCP server by name, with the same name resolution as `reconnectMcpServer()`. Disabling disconnects the server |
| `toggleMcpServer(serverName, enabled)` | Enable or disable an MCP server by name, with the same name resolution as `reconnectMcpServer()`. Disabling a stdio, SSE, or HTTP server
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agent-sdk/permissions
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agent-sdk/permissions
If you don't set one, Claude Code picks the starting permission mode by the rules in [Which mode a session starts in](/docs/en/permission-modes#which-mode-a-session-starts-in):
* A `permissions.defaultMode` from the session's [settings files](/docs/en/settings#where-settings-live) when one applies
* Otherwise the built-in default, which can be [auto mode](/docs/en/permission-modes#eliminate-prompts-with-auto-mode)
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interactive-mode
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interactive-mode
When a command reaches its timeout before it finishes, Claude Code automatically [moves it to the background](/docs/en/tools-reference#foreground-commands-that-move-to-the-backgrou
When a command reaches its timeout before it finishes, Claude Code automatically [moves it to the background](/docs/en/tools-reference#foreground-commands-that-move-to-the-backgrou
To disable all background task functionality, set the `CLAUDE_CODE_DISABLE_BACKGROUND_TASKS` environment variable to `1`. See [Environment variables](/docs/en/env-vars) for details
To disable all background task functionality, set the [`CLAUDE_CODE_DISABLE_BACKGROUND_TASKS`](/docs/en/env-vars#variables) environment variable to `1`. Starting in [bare mode](/do
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vs-code
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vs-code
* **Status Bar**: if you've set [`preferredLocation`](#extension-settings) to `sidebar`, or opened Claude with **Claude Code: Open in Side Bar**, click **✻ Claude Code** in the
* **Status Bar**: click **✻ Claude Code** in the bottom-right corner of the window. This works even when no file is open.
Alternatively, if you've set [`preferredLocation`](#extension-settings) to `sidebar`, or opened Claude with **Claude Code: Open in Side Bar**, click "✻ Claude Code" in the **Status
Alternatively, click **✻ Claude Code** in the **Status Bar** at the bottom-right corner of the window. This works even without a file open. You can also use the **Command Palette**
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model-config
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model-config
When the primary model is overloaded, unavailable, or returns another non-retryable server error, Claude Code can switch to a fallback model instead of failing the request. Authent
When the primary model is overloaded, unavailable, or returns another non-retryable server error, Claude Code can switch to a fallback model instead of failing the request. Authent
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google-vertex-ai
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google-vertex-ai
When these checks find a model your project can't invoke, Claude Code remembers the refusal on this machine for up to a day, and launches during that time skip the remembered model
### When a model is disabled mid-session
If your project loses access to the model your session is running on, for example because an administrator disables it in [Model Garden](https://console.cloud.google.com/vertex-ai/
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errors
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errors
If Claude's answers seem less capable than you expect but no error is shown, the cause is usually conversation state rather than the model itself. Claude Code doesn't silently chan
If Claude's answers seem less capable than you expect but no error is shown, the cause is usually conversation state rather than the model itself. Claude Code doesn't silently chan
* An Amazon Bedrock or Google Cloud's Agent Platform startup check finds your default model unavailable
* An Amazon Bedrock or Google Cloud's Agent Platform startup check finds your default model unavailable, or your account [loses access to it mid-session](/docs/en/amazon-bedrock#wh
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amazon-bedrock
When these checks find a model your account can't invoke, Claude Code remembers the refusal on this machine for up to a day, and launches during that time skip the remembered model
### When a model is disabled mid-session
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mcp-quickstart
* The command starts and waits for input: the server itself works. Run `claude mcp get <name>` and confirm the command shown there matches what you just ran. If the command sho
* The command starts and waits for input: the server itself works.
Run `claude mcp get <name>` and confirm the command shown there matches what you just ran. If the command shown differs from what you typed, you likely omitted the `--` separ
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mcp
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mcp
* **Reserved names**: Claude Code reserves the names of its built-in servers, including `workspace`, `claude-in-chrome`, `computer-use`, `Claude Preview`, and `Claude Browser`. If
* **Reserved names**: Claude Code reserves the names of its built-in servers, including `workspace`, `claude-in-chrome`, `computer-use`, `Claude Preview`, and `Claude Browser`. If
For a plugin's stdio server, `claude mcp get` prints `Command: stdio`, an empty `Args:` line, and each environment variable as `NAME=[REDACTED]`. The values are hidden because they
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agent-sdk/python
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agent-sdk/python
| `toggle_mcp_server(server_name, enabled)` | Enable or disable an MCP server mid-session. Disabling removes its tools |
| `toggle_mcp_server(server_name, enabled)` | Enable or disable an MCP server mid-session. Disabling a stdio, SSE, or HTTP server removes its tools |
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statusline
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statusline
<img src="https://mintcdn.com/claude-code/nibzesLaJVh4ydOq/images/statusline-multiline.png?fit=max&auto=format&n=nibzesLaJVh4ydOq&q=85&s=60f11387658acc9ff75158ae85f2ac87" alt="A
<img src="https://mintcdn.com/claude-code/HDAmBwgbrZVk0pOt/images/statusline-multiline.png?fit=max&auto=format&n=HDAmBwgbrZVk0pOt&q=85&s=a9d0a2fe8e446d80b1abc46da3f93270" alt="A
<img src="https://mintcdn.com/claude-code/nibzesLaJVh4ydOq/images/statusline-quickstart.png?fit=max&auto=format&n=nibzesLaJVh4ydOq&q=85&s=696445e59ca0059213250651ad23db6b" alt="A
<img src="https://mintcdn.com/claude-code/HDAmBwgbrZVk0pOt/images/statusline-quickstart.png?fit=max&auto=format&n=HDAmBwgbrZVk0pOt&q=85&s=88a7eab9c1038dd098ee8e284d96b7e6" alt="A
<img src="https://mintcdn.com/claude-code/nibzesLaJVh4ydOq/images/statusline-context-window-usage.png?fit=max&auto=format&n=nibzesLaJVh4ydOq&q=85&s=15b58ab3602f036939145dde3165c6
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agent-view
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agent-view
<img src="https://mintcdn.com/claude-code/1B48Qz2Z9hac4SLG/images/agent-view-light.png?fit=max&auto=format&n=1B48Qz2Z9hac4SLG&q=85&s=7a186c96ed47d6700d084d77e786be65" className="da
<img src="https://mintcdn.com/claude-code/1B48Qz2Z9hac4SLG/images/agent-view-dark.png?fit=max&auto=format&n=1B48Qz2Z9hac4SLG&q=85&s=a5bed7434bae368faea3a8f023b52aa2" className="hid
<img src="https://mintcdn.com/claude-code/HDAmBwgbrZVk0pOt/images/agent-view-light.png?fit=max&auto=format&n=HDAmBwgbrZVk0pOt&q=85&s=d6905012bee31f3e6b3920b09c05dd02" className="da
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| `claude -p` or the [Agent SDK](/docs/en/agent-sdk/permissions) | `default` |
| `claude -p`, or the [Python Agent SDK](/docs/en/agent-sdk/python#claudeagentoptions) without `permission_mode` | `default` in sessions that [fetch feature flags](/docs/en/env-var
On Pro, Max, and Team plans, if your `~/.claude/settings.json` sets a `defaultMode` other than `auto` and no other settings file sets one, your sessions keep starting in that mode.
If your `~/.claude/settings.json` sets a `defaultMode` other than `auto` and no other settings file sets one, your sessions keep starting in that mode. On Pro, Max, and Team plans,
On [Amazon Bedrock](/docs/en/amazon-bedrock), [Google Cloud's Agent Platform](/docs/en/google-vertex-ai), [Microsoft Foundry](/docs/en/microsoft-foundry), and signed-in [Claude app
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Upstream edited 1 Oct 2026 01:07 UTC Recorded here 1 Oct 2026 01:37 UTC
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Use `--allowedTools` to let Claude use certain tools without prompting. This example runs a test suite and fixes failures, allowing Claude to execute Bash commands and read/edit fi
Use `--allowedTools` to let Claude use certain tools without prompting. Listing `Read` and `Edit` lets Claude read and edit files without asking for permission. Listing `Bash` does
To set a baseline for the whole session instead of listing individual tools, pass a [permission mode](/docs/en/permission-modes). For `-p`, the [built-in starting permission mode](
To set a baseline for the whole session instead of listing individual tools, pass a [permission mode](/docs/en/permission-modes). A run where nothing sets a permission mode takes t
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Upstream edited 1 Oct 2026 01:07 UTC Recorded here 1 Oct 2026 01:37 UTC
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This section covers using a gateway product your organization already runs, rather than [Claude apps gateway](/docs/en/claude-apps-gateway). For what a gateway is, how it sits betw
This section covers using a gateway product your organization already runs, rather than [Claude apps gateway](/docs/en/claude-apps-gateway). For what a gateway is, how it sits betw
> * If you're a developer connecting to an existing gateway: [connect Claude Code to your gateway](/docs/en/llm-gateway-connect)
> * If you're an admin rolling out a gateway for your organization: [deploy and distribute a gateway](/docs/en/llm-gateway-rollout)
> * If you're configuring a gateway product: the [gateway compatibility guide](/docs/en/llm-gateway-protocol)
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Upstream edited 1 Oct 2026 01:04 UTC Recorded here 22 Oct 2026 18:07 UTC
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<Note>
* If you're a developer connecting to an existing gateway: [connect Claude Code to your gateway](/docs/en/llm-gateway-connect)
* If you're an admin rolling out a gateway for your organization: [deploy and distribute a gateway](/docs/en/llm-gateway-rollout)
* If you're configuring a gateway product: the [gateway compatibility guide](/docs/en/llm-gateway-protocol)
</Note>
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Upstream edited 1 Oct 2026 01:04 UTC Recorded here 20 Oct 2026 18:37 UTC
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