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 |
|---|---|---|
v2.1.275tool.call |
Documentation arrivedAnthropic's documentation has since written up tool.call, on Configure a custom OpenTelemetry collector.
the line in the docs| `tool.caller` | `direct` for tools the add-in runs, or `server_tool` for tools the model provider runs | |
|
v2.1.283/ide |
Documentation arrivedAnthropic's documentation has since written up /ide, on Troubleshoot federated cloud access.
the line in the docs| Issuer | Exactly `https://identity.anthropic.com/agents`, including the path. A verifier configured with any other issuer value, such as the bare host, a different path, or a trailing slash, rejects every token, including the connection … |
|
v2.1.265Jira |
Documentation arrivedAnthropic's documentation has since written up Jira, on Per-service connection guides.
the line in the docs| Jira and Confluence | Issue tracking | [Connect Jira and Confluence](/docs/claude-tag/admins/connections/atlassian) | |
|
v2.1.265Confluence |
Documentation arrivedAnthropic's documentation has since written up Confluence, on Per-service connection guides.
the line in the docs| Jira and Confluence | Issue tracking | [Connect Jira and Confluence](/docs/claude-tag/admins/connections/atlassian) | |
|
v2.1.265Asana |
Documentation arrivedAnthropic's documentation has since written up Asana, on Per-service connection guides.
the line in the docs| Asana | Issue tracking | [Connect Asana](/docs/claude-tag/admins/connections/asana) | |
|
v2.1.283/mcp |
Documentation arrivedA small documentation edit on Connect Claude Code to tools via MCP touched a line naming /mcp after this was published.
the line in the docsAnthropic also provides some connectors itself, without you or an admin adding them. On accounts where [Claude Docs](/docs/en/artifacts#write-a-document-with-claude-docs) is available, `/mcp` lists `claude.ai Claude Docs` with no setup, an… |
|
v2.1.283/mcp |
Documentation arrivedA small documentation edit on Connect Claude Code to tools via MCP touched a line naming /mcp after this was published.
the line in the docsAnthropic also provides some connectors itself, without you or an admin adding them. On accounts where [Claude Docs](/docs/en/artifacts#write-a-document-with-claude-docs) is available, `/mcp` lists `claude.ai Claude Docs` with no setup, an… |
|
v2.1.265/slides |
Documentation arrivedA small documentation edit on Commands touched a line naming /slides after this was published.
the line in the docs| `/slides [brief]` | **[Skill](/docs/en/skills#bundled-skills).** Make a new presentation as a Claude Slides [artifact](/docs/en/artifacts#make-a-slide-deck) filled from your brief, for example `/slides a quarterly review of the platform … |
|
v2.1.273slides |
Documentation arrivedA small documentation edit on Commands touched a line naming slides after this was published.
the line in the docs| `/design [brief]` | **[Skill](/docs/en/skills#bundled-skills).** Draft UI mockups, screen flows, landing pages, or posters as artboards on one canvas, published as a Claude Design [artifact](/docs/en/artifacts#draft-a-design-canvas), for… |
|
v2.1.273slides |
Documentation arrivedA small documentation edit on Commands touched a line naming slides after this was published.
the line in the docs| `/design [brief]` | **[Skill](/docs/en/skills#bundled-skills).** Draft UI mockups, screen flows, landing pages, or posters as artboards on one canvas, published as a Claude Design [artifact](/docs/en/artifacts#draft-a-design-canvas), for… |
|
v2.1.282/artifacts |
Documentation arrivedA small documentation edit on Commands touched a line naming /artifacts after this was published.
the line in the docs| `/design [brief]` | **[Skill](/docs/en/skills#bundled-skills).** Draft UI mockups, screen flows, landing pages, or posters as artboards on one canvas, published as a Claude Design [artifact](/docs/en/artifacts#draft-a-design-canvas), for… |
|
v2.1.281/artifacts |
Documentation arrivedA small documentation edit on Commands touched a line naming /artifacts after this was published.
the line in the docs| `/design [brief]` | **[Skill](/docs/en/skills#bundled-skills).** Draft UI mockups, screen flows, landing pages, or posters as artboards on one canvas, published as a Claude Design [artifact](/docs/en/artifacts#draft-a-design-canvas), for… |
|
v2.1.281/artifacts |
Documentation arrivedA small documentation edit on Commands touched a line naming /artifacts after this was published.
the line in the docs| `/design [brief]` | **[Skill](/docs/en/skills#bundled-skills).** Draft UI mockups, screen flows, landing pages, or posters as artboards on one canvas, published as a Claude Design [artifact](/docs/en/artifacts#draft-a-design-canvas), for… |
|
v2.1.280/design |
Documentation arrivedA small documentation edit on Commands touched a line naming /design after this was published.
the line in the docs| `/design [brief]` | **[Skill](/docs/en/skills#bundled-skills).** Draft UI mockups, screen flows, landing pages, or posters as artboards on one canvas, published as a Claude Design [artifact](/docs/en/artifacts#draft-a-design-canvas), for… |
|
v2.1.265/slides |
Documentation arrivedAnthropic's documentation has since written up /slides, on Share session output as artifacts.
the line in the docsTo start from a template, describe what you want, such as "turn the migration notes into a deck for Thursday's review" or "write this plan up as a doc for the team". Claude picks the matching template, fills it from your request and from w… |
|
v2.1.274CLAUDE_CODE_MCP_STARTUP_WAIT_MS |
Documentation arrivedAnthropic's documentation has since written up CLAUDE_CODE_MCP_STARTUP_WAIT_MS, on Claude Code changelog.
the line in the docs* Changed the non-interactive first turn to still wait up to 2s for connecting MCP servers named by `--allowedTools` or an `mcp_tool` hook, even when `CLAUDE_CODE_MCP_STARTUP_WAIT_MS` is `0` |
|
v2.1.283/copy |
Documentation arrivedAnthropic's documentation has since written up /copy, on Claude Code changelog.
the line in the docs* Improved lists such as `/tasks`, `/copy` and `/hooks`: the details after each name now line up in one column when they fit, and otherwise sit at the right edge |
|
v2.1.265as_level |
Documentation arrivedAnthropic's documentation has since written up as_level, on Claude Code changelog.
the line in the docs* Fixed artifact database write results telling Claude that every viewer sees a write to a viewer's private `data/users/` subtree, and added a "view" level to `as_level` |
|
v2.1.265as_level |
Documentation arrivedAnthropic's documentation has since written up as_level, on Claude Code changelog.
the line in the docs* Fixed artifact database write results telling Claude that every viewer sees a write to a viewer's private `data/users/` subtree, and added a "view" level to `as_level` |
|
v2.1.265as_level |
Documentation arrivedAnthropic's documentation has since written up as_level, on Claude Code changelog.
the line in the docs* Fixed artifact database write results telling Claude that every viewer sees a write to a viewer's private `data/users/` subtree, and added a "view" level to `as_level` |
|
v2.1.265as_level |
Documentation arrivedAnthropic's documentation has since written up as_level, on Claude Code changelog.
the line in the docs* Fixed artifact database write results telling Claude that every viewer sees a write to a viewer's private `data/users/` subtree, and added a "view" level to `as_level` |
|
v2.1.283/loop |
Documentation arrivedAnthropic's documentation has since written up /loop, on Claude Code changelog.
the line in the docs* Fixed `/loop` status updates in self-paced mode often not being shown because Claude wrote them only in its reasoning; Claude now writes each update, and the outcome when the loop stops, as visible text |
|
v2.1.282/upgrade |
Documentation arrivedAnthropic's documentation has since written up /upgrade, on Claude Code changelog.
the line in the docs* Fixed usage-limit warnings suggesting `/upgrade` to users already on the highest Max plan; the warnings and `/upgrade` itself now point at `/usage-credits` when it is available |
|
v2.1.280SendMessage |
Documentation arrivedAnthropic's documentation has since written up SendMessage, on Claude Code changelog.
the line in the docs* Fixed sessions launched without the `SendMessage` tool (such as by Claude Desktop) still being told to message other sessions with it |
|
v2.1.283ElicitationResult |
Documentation arrivedAnthropic's documentation has since written up ElicitationResult, on Claude Code changelog.
the line in the docs* Fixed `{"decision":"block"}` returned by Elicitation and ElicitationResult hooks being ignored; it now declines the MCP elicitation, as exit code 2 does |
|
v2.1.283Elicitation |
Documentation arrivedAnthropic's documentation has since written up Elicitation, on Claude Code changelog.
the line in the docs* Fixed `{"decision":"block"}` returned by Elicitation and ElicitationResult hooks being ignored; it now declines the MCP elicitation, as exit code 2 does |
|
v2.1.283claude plugin install |
Documentation arrivedAnthropic's documentation has since written up claude plugin install, on Claude Code changelog.
the line in the docs* Fixed a failed first `claude plugin install` leaving the plugin enabled and recorded when a dependency's version range could not be met |
|
v2.1.282claude plugin install |
Documentation arrivedAnthropic's documentation has since written up claude plugin install, on Claude Code changelog.
the line in the docs* Fixed a failed first `claude plugin install` leaving the plugin enabled and recorded when a dependency's version range could not be met |
|
v2.1.282claude plugin install |
Documentation arrivedAnthropic's documentation has since written up claude plugin install, on Claude Code changelog.
the line in the docs* Fixed a failed first `claude plugin install` leaving the plugin enabled and recorded when a dependency's version range could not be met |
|
v2.1.283allowed-tools |
Documentation arrivedAnthropic's documentation has since written up allowed-tools, on Claude Code changelog.
the line in the docs* Fixed plugins from marketplaces, claude.ai and npm pre-approving their own tools via `allowed-tools` under managed `allowManagedPermissionRulesOnly`; only plugins from an official Anthropic source or a source that managed settings vouch … |
|
v2.1.282allowed-tools |
Documentation arrivedAnthropic's documentation has since written up allowed-tools, on Claude Code changelog.
the line in the docs* Fixed plugins from marketplaces, claude.ai and npm pre-approving their own tools via `allowed-tools` under managed `allowManagedPermissionRulesOnly`; only plugins from an official Anthropic source or a source that managed settings vouch … |
|
v2.1.283claude mcp add |
Documentation arrivedAnthropic's documentation has since written up claude mcp add, on Claude Code changelog.
the line in the docs* Fixed `claude mcp add` reporting success when managed settings restrict MCP servers to plugins; it now refuses and says what to do, instead of saving a server that never loads |
|
v2.1.283/extra-usage |
Documentation arrivedAnthropic's documentation has since written up /extra-usage, on Claude Code changelog.
the line in the docs* Fixed repeated calls to the plan-usage endpoint after it rate-limits or rejects your login: `/usage`, `/extra-usage` and IDE usage views now back off instead of re-asking |
|
v2.1.283/rate-limit-options |
Documentation arrivedAnthropic's documentation has since written up /rate-limit-options, on Claude Code changelog.
the line in the docs* Added `/rate-limit-options` to `/help` and the command menu for claude.ai subscribers, so the usage-limit notices that mention it point to a command you can find |
|
v2.1.283/context |
Documentation arrivedA small documentation edit on claude-on-vertex-ai touched a line naming /context after this was published.
the line in the docsClaude Fable 5.1, Claude Fable 5, Claude Opus 5.5, Claude Opus 5, Claude Opus 4.8, Claude Opus 4.7, Claude Opus 4.6, Claude Sonnet 5.5, Claude Sonnet 5, and Claude Sonnet 4.6 have a [1M-token context window](https://platform.claude.com/doc… |
|
v2.1.283modelOverrides |
Documentation arrivedAnthropic's documentation has since written up modelOverrides, on Model configuration.
the line in the docs* Claude Code must recognize the current model as a fallback source. Fable 5.1 and Fable 5 are recognized when the model ID contains `claude-fable-5`, matches the value of `ANTHROPIC_DEFAULT_FABLE_MODEL`, or is mapped with [`modelOverrides… |
|
v2.1.283ANTHROPIC_DEFAULT_OPUS_MODEL |
Documentation arrivedAnthropic's documentation has since written up ANTHROPIC_DEFAULT_OPUS_MODEL, on Model configuration.
the line in the docs* An Opus target must resolve in your deployment, whichever model refused: set `ANTHROPIC_DEFAULT_OPUS_MODEL`, or keep an Opus 4.8 entry in the provider's model list. Without one, fallback stays off for every source model, including Sonnet… |
|
v2.1.283/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… |
|
v2.1.283claude update |
Documentation arrivedAnthropic's documentation has since written up claude update, on Error reference.
the line in the docs* Run `claude update` and restart Claude Code. Opus 4.7 needs v2.1.111 or later. Opus 4.8 needs v2.1.154 or later. Sonnet 5 needs v2.1.197 or later. Opus 5 needs v2.1.219 or later. Opus 5.5 needs v2.1.280 or later. Sonnet 5.5 needs v2.1.28… |
|
v2.1.283/model |
Documentation arrivedA small documentation edit on Manage costs effectively touched a line naming /model after this was published.
the line in the docsFor simpler tasks where deep reasoning isn't needed, you can reduce costs by lowering the [effort level](/docs/en/model-config#adjust-effort-level) with `/effort` or in `/model`, or by disabling thinking in `/config`. You can't turn off th… |
|
v2.1.283/model |
Documentation arrivedA small documentation edit on Manage costs effectively touched a line naming /model after this was published.
the line in the docsFor simpler tasks where deep reasoning isn't needed, you can reduce costs by lowering the [effort level](/docs/en/model-config#adjust-effort-level) with `/effort` or in `/model`, or by disabling thinking in `/config`. You can't turn off th… |
|
v2.1.283claude-opus-5-5 |
Documentation arrivedAnthropic's documentation has since written up claude-opus-5-5, on advisor-tool.
the line in the docs| Claude Haiku 4.5 (claude-haiku-4-5) | Claude Mythos 5.1 (claude-mythos-5-1) Claude Fable 5.1 (claude-fable-5-1) Claude Mythos 5 (claude-mythos-5) Claude Fable 5 (claude-fable-5) Claude Opus 5.5 (claude-opus-5-5) Claude Opus 5 (claude-opu… |
|
v2.1.283claude-opus-5 |
Documentation arrivedAnthropic's documentation has since written up claude-opus-5, on advisor-tool.
the line in the docs| Claude Haiku 4.5 (claude-haiku-4-5) | Claude Mythos 5.1 (claude-mythos-5-1) Claude Fable 5.1 (claude-fable-5-1) Claude Mythos 5 (claude-mythos-5) Claude Fable 5 (claude-fable-5) Claude Opus 5.5 (claude-opus-5-5) Claude Opus 5 (claude-opu… |
|
v2.1.280SendMessage |
Documentation arrivedA small documentation edit on Create custom subagents touched a line naming SendMessage after this was published.
the line in the docs* **Sibling roster**: a [system reminder](/docs/en/glossary#system-reminder) listing `main` and every other named agent in the session, each a valid `to` value for [`SendMessage`](#resume-subagents). Requires Claude Code v2.1.206 or later.… |
|
v2.1.275additionalContext |
Documentation arrivedA small documentation edit on Hooks reference touched a line naming additionalContext after this was published.
the line in the docsThe `additionalContext` field passes a string from your hook into Claude's context window. Claude Code wraps the string in a [system reminder](/docs/en/glossary#system-reminder) and inserts it into the conversation at the point where the h… |
|
v2.1.283/login |
Documentation arrivedA small documentation edit on Claude apps gateway deployment and operations touched a line naming /login after this was published.
the line in the docs| Startup exits with `Administrator policy requires a Cloud gateway sign-in on this machine` | The developer's environment sets `ANTHROPIC_API_KEY` or `ANTHROPIC_AUTH_TOKEN`, their settings configure an [`apiKeyHelper`](/docs/en/settings-r… |
|
v2.1.268suppressAlwaysAllowRule |
Documentation arrivedA small documentation edit on Handle approvals and user input touched a line naming suppressAlwaysAllowRule after this was published.
the line in the docsIn TypeScript, skip the always-allow choice for a request whose options carry [`suppressAlwaysAllowRule: true`](/docs/en/agent-sdk/typescript#canusetool). The hint requires Agent SDK v0.3.268 or later, and the Python `context` doesn't carr… |
|
v2.1.268reload_plugins |
Documentation arrivedAnthropic's documentation has since written up reload_plugins, on Agent SDK reference - TypeScript.
the line in the docs* `local_command`: the name of the command the turn dispatched, on the success result of a turn that a command completed without entering the agent loop, such as `/compact`. The name is folded to lowercase letters and underscores, so `/rel… |
|
v2.1.283/compact |
Documentation arrivedAnthropic's documentation has since written up /compact, on Agent SDK reference - TypeScript.
the line in the docs* `local_command`: the name of the command the turn dispatched, on the success result of a turn that a command completed without entering the agent loop, such as `/compact`. The name is folded to lowercase letters and underscores, so `/rel… |
|
v2.1.268result_index |
Documentation arrivedAnthropic's documentation has since written up result_index, on Agent SDK reference - TypeScript.
the line in the docsresult_index?: number; |