An entry is only as true as the day it was written.
Flags move on the server after a release ships. Anthropic's own notes land days later and their documentation later still. Sometimes an entry turns out to be wrong and gets corrected by hand. All of that is recorded against the entry it happened to, and this is the whole of it in the order it happened.
Nothing here replaces an entry. Every line links to the page its release published, still saying what that release said, because a correction is added and dated rather than swapped in.
| When | Entry | What happened |
|---|---|---|
v2.1.284opusplan |
Documentation arrivedAnthropic's documentation has since written up opusplan, on Claude Code changelog.
the line in the docs* Fixed switching between Opus 5.5 and Sonnet 5.5 (`/model`, `opusplan`) rewriting earlier MCP tool announcements, which could drop earlier extended thinking |
|
v2.1.286/model |
Documentation arrivedAnthropic's documentation has since written up /model, on Claude Code changelog.
the line in the docs* Fixed Bedrock and Vertex startup model checks ignoring an enforced `availableModels` list, which could collapse `/model` to one Opus row |
|
v2.1.281bareElicitationCapability |
Documentation arrivedAnthropic's documentation has since written up bareElicitationCapability, on Claude Code changelog.
the line in the docs* Added URL prompts from MCP servers on the 2025-11-25 protocol, for example to sign in. If a server no longer connects after this update, add "bareElicitationCapability": true to its MCP config entry |
|
v2.1.281bareElicitationCapability |
Documentation arrivedAnthropic's documentation has since written up bareElicitationCapability, on Claude Code changelog.
the line in the docs* Added URL prompts from MCP servers on the 2025-11-25 protocol, for example to sign in. If a server no longer connects after this update, add "bareElicitationCapability": true to its MCP config entry |
|
v2.1.286cc-plugin-you-should-know |
Documentation arrivedAnthropic's documentation has since written up cc-plugin-you-should-know, on Claude Code changelog.
the line in the docs* 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-know@builtin` (for first-party sessions with telemetry on) |
|
v2.1.286cc-plugin-you-should-know |
Documentation arrivedAnthropic's documentation has since written up cc-plugin-you-should-know, on Claude Code changelog.
the line in the docs* 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-know@builtin` (for first-party sessions with telemetry on) |
|
v2.1.286extraKnownMarketplaces |
Documentation arrivedAnthropic's documentation has since written up extraKnownMarketplaces, on All settings.
the line in the docs"extraKnownMarketplaces": { |
|
v2.1.286managed-settings.json |
Documentation arrivedAnthropic's documentation has since written up managed-settings.json, on All settings.
the line in the docs```json managed-settings.json theme={null} |
|
v2.1.268sec-default@builtin |
Documentation arrivedAnthropic's documentation has since written up sec-default@builtin, on All settings.
the line in the docsList the managed plugins whose [mods](/docs/en/plugins/mods/overview) run before every mod a user installs, in the listed order. When you set this key in managed settings, name `sec-default@builtin` in the list to keep the built-in guard. … |
|
v2.1.268prependPlugins |
Documentation arrivedAnthropic's documentation has since written up prependPlugins, on All settings.
the line in the docs| [`prependPlugins`](#prependplugins) | Run your organization's [mods](/docs/en/plugins/mods/admin) before every mod a user installs | Plugins and skills | User or managed | |
|
v2.1.268prependPlugins |
Documentation arrivedAnthropic's documentation has since written up prependPlugins, on All settings.
the line in the docs| [`prependPlugins`](#prependplugins) | Run your organization's [mods](/docs/en/plugins/mods/admin) before every mod a user installs | Plugins and skills | User or managed | |
|
v2.1.268prependPlugins |
Documentation arrivedAnthropic's documentation has since written up prependPlugins, on All settings.
the line in the docs| [`prependPlugins`](#prependplugins) | Run your organization's [mods](/docs/en/plugins/mods/admin) before every mod a user installs | Plugins and skills | User or managed | |
|
v2.1.259prependPlugins |
Documentation arrivedAnthropic's documentation has since written up prependPlugins, on All settings.
the line in the docs| [`prependPlugins`](#prependplugins) | Run your organization's [mods](/docs/en/plugins/mods/admin) before every mod a user installs | Plugins and skills | User or managed | |
|
v2.1.268appendPlugins |
Documentation arrivedAnthropic's documentation has since written up appendPlugins, on All settings.
the line in the docs| [`appendPlugins`](#appendplugins) | Run your organization's [mods](/docs/en/plugins/mods/admin) after every mod a user installs | Plugins and skills | User or managed | |
|
v2.1.259appendPlugins |
Documentation arrivedAnthropic's documentation has since written up appendPlugins, on All settings.
the line in the docs| [`appendPlugins`](#appendplugins) | Run your organization's [mods](/docs/en/plugins/mods/admin) after every mod a user installs | Plugins and skills | User or managed | |
|
v2.1.286pluginConfigs |
Documentation arrivedAnthropic's documentation has since written up pluginConfigs, on Manage Claude Code plugins for your organization.
the line in the docs* **`allowManagedModsOnly`**: this is an option on a built-in plugin, which you set under `pluginConfigs` in managed settings. See [Stop user-installed mods from loading](/docs/en/plugins/mods/admin#stop-user-installed-mods-from-loading). |
|
v2.1.281pluginConfigs |
Documentation arrivedAnthropic's documentation has since written up pluginConfigs, on Manage Claude Code plugins for your organization.
the line in the docs* **`allowManagedModsOnly`**: this is an option on a built-in plugin, which you set under `pluginConfigs` in managed settings. See [Stop user-installed mods from loading](/docs/en/plugins/mods/admin#stop-user-installed-mods-from-loading). |
|
v2.1.285CLAUDE_CODE_DISABLE_OFFICIAL_MARKETPLACE_AUTOINSTALL |
Documentation arrivedAnthropic's documentation has since written up CLAUDE_CODE_DISABLE_OFFICIAL_MARKETPLACE_AUTOINSTALL, on Manage Claude Code plugins for your organization.
the line in the docsEvery key in the table is a managed setting, apart from `enabledPlugins`, `syncClaudeAiPlugins`, `CLAUDE_CODE_DISABLE_OFFICIAL_MARKETPLACE_AUTOINSTALL`, and `allowManagedModsOnly`: |
|
v2.1.284enabledPlugins |
Documentation arrivedAnthropic's documentation has since written up enabledPlugins, on Manage Claude Code plugins for your organization.
the line in the docsEvery key in the table is a managed setting, apart from `enabledPlugins`, `syncClaudeAiPlugins`, `CLAUDE_CODE_DISABLE_OFFICIAL_MARKETPLACE_AUTOINSTALL`, and `allowManagedModsOnly`: |
|
v2.1.283claude plugin init |
Documentation arrivedAnthropic's documentation has since written up claude plugin init, on Plugin manifest reference.
the line in the docsThe error reads `Plugin name "<name>" is reserved: it passes as one of Anthropic's own`, and the warning reads `Plugin name "<name>" reads as one of Anthropic's own`. `claude plugin init` and `claude plugin tag` refuse a name that draws th… |
|
v2.1.286/hooks |
Documentation arrivedAnthropic's documentation has since written up /hooks, on Configure permissions.
the line in the docsThat 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 rules and the `PreToolUse` hooks have decided, and its answe… |
|
v2.1.281hooks.json |
Documentation arrivedAnthropic's documentation has since written up hooks.json, on Configure permissions.
the line in the docsThat 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 rules and the `PreToolUse` hooks have decided, and its answe… |
|
v2.1.269tool.check |
Documentation arrivedAnthropic's documentation has since written up tool.check, on Configure permissions.
the line in the docsThat 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 rules and the `PreToolUse` hooks have decided, and its answe… |
|
v2.1.269tool.check |
Documentation arrivedAnthropic's documentation has since written up tool.check, on Configure permissions.
the line in the docsThat 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 rules and the `PreToolUse` hooks have decided, and its answe… |
|
v2.1.269tool.check |
Documentation arrivedAnthropic's documentation has since written up tool.check, on Configure permissions.
the line in the docsThat 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 rules and the `PreToolUse` hooks have decided, and its answe… |
|
v2.1.269tool.check |
Documentation arrivedAnthropic's documentation has since written up tool.check, on Configure permissions.
the line in the docsThat 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 rules and the `PreToolUse` hooks have decided, and its answe… |
|
v2.1.269tool.check |
Documentation arrivedAnthropic's documentation has since written up tool.check, on Configure permissions.
the line in the docsThat 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 rules and the `PreToolUse` hooks have decided, and its answe… |
|
v2.1.286/plugin |
Documentation arrivedAnthropic's documentation has since written up /plugin, on Configure permissions.
the line in the docsThat 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 rules and the `PreToolUse` hooks have decided, and its answe… |
|
v2.1.286/plugin |
Documentation arrivedAnthropic's documentation has since written up /plugin, on Configure permissions.
the line in the docsThat 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 rules and the `PreToolUse` hooks have decided, and its answe… |
|
v2.1.285PreToolUse |
Documentation arrivedA small documentation edit on Automate actions with hooks touched a line naming PreToolUse after this was published.
the line in the docsA [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 permissions with hooks](/docs/en/permissions#extend-permiss… |
|
v2.1.269tool.check |
Documentation arrivedA small documentation edit on Automate actions with hooks touched a line naming tool.check after this was published.
the line in the docsA [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 permissions with hooks](/docs/en/permissions#extend-permiss… |
|
v2.1.269tool.check |
Documentation arrivedA small documentation edit on Automate actions with hooks touched a line naming tool.check after this was published.
the line in the docsA [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 permissions with hooks](/docs/en/permissions#extend-permiss… |
|
v2.1.269tool.check |
Documentation arrivedA small documentation edit on Automate actions with hooks touched a line naming tool.check after this was published.
the line in the docsA [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 permissions with hooks](/docs/en/permissions#extend-permiss… |
|
v2.1.269tool.check |
Documentation arrivedA small documentation edit on Automate actions with hooks touched a line naming tool.check after this was published.
the line in the docsA [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 permissions with hooks](/docs/en/permissions#extend-permiss… |
|
v2.1.269tool.check |
Documentation arrivedA small documentation edit on Automate actions with hooks touched a line naming tool.check after this was published.
the line in the docsA [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 permissions with hooks](/docs/en/permissions#extend-permiss… |
|
v2.1.286/hooks |
Documentation arrivedA small documentation edit on Automate actions with hooks touched a line naming /hooks after this was published.
the line in the docsThe 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/en/mcp#require-approval-for-a-specific-tool) or for connec… |
|
v2.1.281hooks.json |
Documentation arrivedA small documentation edit on Automate actions with hooks touched a line naming hooks.json after this was published.
the line in the docsThe 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/en/mcp#require-approval-for-a-specific-tool) or for connec… |
|
v2.1.286/plugin |
Documentation arrivedA small documentation edit on Explore the .claude directory touched a line naming /plugin after this was published.
the line in the docs| `dev-mods/<session>/` | [Mods that Claude wrote](/docs/en/plugins/mods/create#ask-claude-for-a-mod) during the session | |
|
v2.1.286/plugin |
Documentation arrivedA small documentation edit on Explore the .claude directory touched a line naming /plugin after this was published.
the line in the docs| `dev-mods/<session>/` | [Mods that Claude wrote](/docs/en/plugins/mods/create#ask-claude-for-a-mod) during the session | |
|
v2.1.285/plugin |
Documentation arrivedA small documentation edit on Explore the .claude directory touched a line naming /plugin after this was published.
the line in the docs| `dev-mods/<session>/` | [Mods that Claude wrote](/docs/en/plugins/mods/create#ask-claude-for-a-mod) during the session | |
|
v2.1.260get_context_usage |
Documentation arrivedAnthropic's documentation has since written up get_context_usage, on Agent SDK reference - Python.
the line in the docsasync def get_context_usage(self) -> ContextUsageResponse |
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v2.1.259context_usage |
Documentation arrivedAnthropic's documentation has since written up context_usage, on Agent SDK reference - Python.
the line in the docsasync def get_context_usage(self) -> ContextUsageResponse |
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v2.1.284/mcp |
Documentation arrivedA small documentation edit on Configure permissions touched a line naming /mcp after this was published.
the line in the docs| 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 where the helper is declared. Claude Code connects the serv… |
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v2.1.281mcpServers |
Documentation arrivedA small documentation edit on Configure permissions touched a line naming mcpServers after this was published.
the line in the docs| 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 dialog is offered | Not used | |
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v2.1.285/artifacts |
Documentation arrivedA small documentation edit on Enterprise network configuration touched a line naming /artifacts after this was published.
the line in the docs| `*.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 Artifact tool is [available](/docs/en/artifacts#availability) for… |
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v2.1.285/context |
Documentation arrivedAnthropic's documentation has since written up /context, on Model configuration.
the line in the docs| **`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 long sessions. No effect when `sonnet` already resolves to So… |
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v2.1.285claude mcp get |
Documentation arrivedAnthropic's documentation has since written up claude mcp get, on Connect Claude Code to tools via MCP.
the line in the docs* `⊘ 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 both `claude mcp list` and `claude mcp get <name>`. Turn th… |
|
v2.1.284sonnet-5-5 |
Documentation arrivedA small documentation edit on Explore the context window touched a line naming sonnet-5-5 after this was published.
the line in the docsSonnet 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-sonnet-5-context-window) for their auto-compaction thresholds, a… |
|
v2.1.284sonnet-5-5 |
Documentation arrivedA small documentation edit on Explore the context window touched a line naming sonnet-5-5 after this was published.
the line in the docsSonnet 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-sonnet-5-context-window) for their auto-compaction thresholds, a… |
|
v2.1.285--settings |
Documentation arrivedA small documentation edit on Share session output as artifacts touched a line naming --settings after this was published.
the line in the docsOnce 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 settings](/docs/en/server-managed-settings), no settings file t… |