Follow Discord
Sweep 06 Nov 2026 · 01:32Z Build v2.1.319 537 read Stable v2.1.311 Latest v2.1.318 Next v2.1.319 Feeds RSS JSON llms.txt llms-full.txt Unofficial
HomeReleasesWhat has changed since
What has changed since

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.

Events22,549dated, and never edited afterwards
Newestthe last time anything moved
Flag readings moved17,196a reading is one sample, for one account
Documentation arrived5,243a docs edit touched an entry's names
WhenEntryWhat happened
v2.1.275/plugin install Documentation arrivedAnthropic's documentation has since written up /plugin install, on Error reference.
the line in the docs

You confirmed adding a marketplace through [`/plugin install <plugin> --marketplace <source>`](/docs/en/discover-plugins#add-a-marketplace-and-install-in-one-command), and the catalog Claude Code fetched from that source names itself the s…

v2.1.275/plugin install Documentation arrivedAnthropic's documentation has since written up /plugin install, on Error reference.
the line in the docs

You confirmed adding a marketplace through [`/plugin install <plugin> --marketplace <source>`](/docs/en/discover-plugins#add-a-marketplace-and-install-in-one-command), and the catalog Claude Code fetched from that source names itself the s…

v2.1.275/plugin install Documentation arrivedAnthropic's documentation has since written up /plugin install, on Error reference.
the line in the docs

You confirmed adding a marketplace through [`/plugin install <plugin> --marketplace <source>`](/docs/en/discover-plugins#add-a-marketplace-and-install-in-one-command), and the catalog Claude Code fetched from that source names itself the s…

v2.1.275/plugin install Documentation arrivedAnthropic's documentation has since written up /plugin install, on Error reference.
the line in the docs

You confirmed adding a marketplace through [`/plugin install <plugin> --marketplace <source>`](/docs/en/discover-plugins#add-a-marketplace-and-install-in-one-command), and the catalog Claude Code fetched from that source names itself the s…

v2.1.275remedy Documentation arrivedAnthropic's documentation has since written up remedy, on Error reference.
the line in the docs

Every form of the message starts with the same words, followed by a remedy that depends on how your session authenticates. With no competing credential it reads:

v2.1.274/usage-credits Documentation arrivedAnthropic's documentation has since written up /usage-credits, on Error reference.
the line in the docs

* Where the message names `/usage-credits`, run it to turn on metered billing for the 1M variant on Pro and Max, or to request usage credits from your admin on Team and Enterprise. Once usage credits are on, restart Claude Code or start a …

v2.1.275otelHeadersHelper Documentation arrivedAnthropic's documentation has since written up otelHeadersHelper, on Error reference.
the line in the docs

| `otelHeadersHelper failed; telemetry is not being exported. See /status: ...` | [Configuration warnings](#otelheadershelper-failed) |

v2.1.251includeGitInstructions Documentation arrivedA small documentation edit on Environment variables touched a line naming includeGitInstructions after this was published.
the line in the docs

| `CLAUDE_CODE_DISABLE_GIT_INSTRUCTIONS` | Set to `1` to remove built-in commit and PR workflow instructions and the git status snapshot from Claude's context. Useful when using your own git workflow skills. Takes precedence over the [`inc…

v2.1.251CLAUDE_CODE_DISABLE_GIT_INSTRUCTIONS Documentation arrivedA small documentation edit on Environment variables touched a line naming CLAUDE_CODE_DISABLE_GIT_INSTRUCTIONS after this was published.
the line in the docs

| `CLAUDE_CODE_DISABLE_GIT_INSTRUCTIONS` | Set to `1` to remove built-in commit and PR workflow instructions and the git status snapshot from Claude's context. Useful when using your own git workflow skills. Takes precedence over the [`inc…

v2.1.277claude plugin marketplace add Documentation arrivedA small documentation edit on Discover and install prebuilt plugins through marketplaces touched a line naming claude plugin marketplace add after this was published.
the line in the docs

To add a marketplace from that list in your shell instead, run `claude plugin marketplace add` with the `--claudeai` flag and the name the list shows:

v2.1.261--claudeai Documentation arrivedA small documentation edit on Discover and install prebuilt plugins through marketplaces touched a line naming --claudeai after this was published.
the line in the docs

To add a marketplace from that list in your shell instead, run `claude plugin marketplace add` with the `--claudeai` flag and the name the list shows:

v2.1.246.gitignore Documentation arrivedA small documentation edit on Use Claude Code in VS Code touched a line naming .gitignore after this was published.
the line in the docs

| `respectGitIgnore` | `true` | Exclude .gitignore patterns from file searches and from [selection context](#reference-files-and-folders) |

v2.1.273/update Documentation arrivedA small documentation edit on Commands touched a line naming /update after this was published.
the line in the docs

| `/update-config [request]` | **[Skill](/docs/en/skills#bundled-skills).** Describe a settings change, such as allowing a command, setting an environment variable, or adding a [hook](/docs/en/hooks), and Claude edits the matching [`settin…

v2.1.247git worktree add Documentation arrivedAnthropic's documentation has since written up git worktree add, on Run parallel sessions with worktrees.
the line in the docs

All of these apply whether you create the worktree with `--worktree`, with `git worktree add`, or through the [desktop app](/docs/en/desktop#work-in-parallel-with-sessions).

v2.1.247git worktree add Documentation arrivedAnthropic's documentation has since written up git worktree add, on Run parallel sessions with worktrees.
the line in the docs

All of these apply whether you create the worktree with `--worktree`, with `git worktree add`, or through the [desktop app](/docs/en/desktop#work-in-parallel-with-sessions).

v2.1.251CLAUDE_CODE_SUBAGENT_MODEL Documentation arrivedAnthropic's documentation has since written up CLAUDE_CODE_SUBAGENT_MODEL, on Create custom subagents.
the line in the docs

An alias in `CLAUDE_CODE_SUBAGENT_MODEL` always resolves to the version the alias points to, even when it names the main conversation's family.

v2.1.248duration_ms Documentation arrivedA small documentation edit on Customize your status line touched a line naming duration_ms after this was published.
the line in the docs

| `cost.total_duration_ms` | Total wall-clock time the session has been running, in milliseconds. Accumulates across resumes and doesn't include time while the session isn't running |

v2.1.257xargs Documentation arrivedAnthropic's documentation has since written up xargs, on All settings.
the line in the docs

* A command starting with `sudo`, `eval`, or `xargs`

v2.1.277effortLevel Documentation arrivedAnthropic's documentation has since written up effortLevel, on All settings.
the line in the docs

In an interactive session on your machine, when you save `low`, `medium`, `high`, or `xhigh` as your default with `/effort` or the `/model` picker's effort slider, Claude Code writes that level here under the model you're using, so you rar…

v2.1.277sandbox.excludedCommands Documentation arrivedAnthropic's documentation has since written up sandbox.excludedCommands, on All settings.
the line in the docs

| [`sandbox.excludedCommands`](#sandbox-excludedcommands) | Name commands Claude Code can run outside the [sandbox](/docs/en/sandboxing) | Sandbox settings | Any file |

v2.1.274isolation Documentation arrivedAnthropic's documentation has since written up isolation, on Configure the sandboxed Bash tool.
the line in the docs

The session temp directory is writable inside the sandbox by default, alongside the working directory. Unless you [disable filesystem isolation](#disable-filesystem-isolation), Claude Code sets `$TMPDIR` to this directory for sandboxed com…

v2.1.273isolation Documentation arrivedAnthropic's documentation has since written up isolation, on Configure the sandboxed Bash tool.
the line in the docs

The session temp directory is writable inside the sandbox by default, alongside the working directory. Unless you [disable filesystem isolation](#disable-filesystem-isolation), Claude Code sets `$TMPDIR` to this directory for sandboxed com…

v2.1.269WebSearch Documentation arrivedA small documentation edit on Test plugins with evals touched a line naming WebSearch after this was published.
the line in the docs

Runs never stop to ask for permission. Built-in tools that need a grant you didn't give, such as `Bash`, `Write`, `Edit`, `WebFetch`, and `WebSearch`, are removed from the session, so Claude can't call them at all.

v2.1.260WebSearch Documentation arrivedA small documentation edit on Test plugins with evals touched a line naming WebSearch after this was published.
the line in the docs

Runs never stop to ask for permission. Built-in tools that need a grant you didn't give, such as `Bash`, `Write`, `Edit`, `WebFetch`, and `WebSearch`, are removed from the session, so Claude can't call them at all.

v2.1.242--allow-tools Documentation arrivedA small documentation edit on Test plugins with evals touched a line naming --allow-tools after this was published.
the line in the docs

The allowlist is the read-only tools the case lists in `allowed_tools`, from `Read`, `Glob`, `Grep`, `NotebookRead`, `Skill`, `Agent`, `TodoWrite`, and the task tools `TaskCreate`, `TaskGet`, `TaskList`, `TaskUpdate`, and `TaskStop`, plus …

v2.1.273CLAUDE_CODE_GATEWAY_HINT_HEADERS Documentation arrivedA small documentation edit on Roll out an LLM gateway for your organization touched a line naming CLAUDE_CODE_GATEWAY_HINT_HEADERS after this was published.
the line in the docs

| `CLAUDE_CODE_GATEWAY_HINT_HEADERS` | Sends the [gateway hint headers](/docs/en/llm-gateway-protocol#gateway-hint-headers), which classify each request for routing and scheduling decisions at the gateway. Requires Claude Code v2.1.273 or …

v2.1.265Tab Documentation arrivedA small documentation edit on Customize keyboard shortcuts touched a line naming Tab after this was published.
the line in the docs

`Chat` bindings on keys the `Footer` context doesn't bind, such as `Shift+Tab` for `chat:cycleMode`, keep working while an item is selected.

v2.1.257bindings Documentation arrivedA small documentation edit on Customize keyboard shortcuts touched a line naming bindings after this was published.
the line in the docs

`Chat` bindings on keys the `Footer` context doesn't bind, such as `Shift+Tab` for `chat:cycleMode`, keep working while an item is selected.

v2.1.247chat:queueSubmit Documentation arrivedA small documentation edit on Customize keyboard shortcuts touched a line naming chat:queueSubmit after this was published.
the line in the docs

While a footer item is selected, such as a row in the agent panel below the prompt, `Enter` opens it even when you rebind `Enter` in the `Chat` context to `chat:queueSubmit` or `chat:newline`.

v2.1.275SubagentStop Documentation arrivedAnthropic's documentation has since written up SubagentStop, on Hooks reference.
the line in the docs

Not every SubagentStop event comes from a subagent Claude spawned. Claude Code also runs internal agents for some of its own features, such as [prompt suggestions](/docs/en/interactive-mode#prompt-suggestions) and [`/btw` side questions](/…

v2.1.277/ultrareview Documentation arrivedAnthropic's documentation has since written up /ultrareview, on Commands.
the line in the docs

| `/code-review [low\|medium\|high\|xhigh\|max\|ultra] [--fix] [--comment] [pr#\|branch\|path]` | **[Skill](/docs/en/skills#bundled-skills).** Review the current diff, or a PR number, branch, or path you pass, for correctness bugs. Dependi…

v2.1.257/simplify Documentation arrivedAnthropic's documentation has since written up /simplify, on Commands.
the line in the docs

| `/code-review [low\|medium\|high\|xhigh\|max\|ultra] [--fix] [--comment] [pr#\|branch\|path]` | **[Skill](/docs/en/skills#bundled-skills).** Review the current diff, or a PR number, branch, or path you pass, for correctness bugs. Dependi…

v2.1.242--comment Documentation arrivedAnthropic's documentation has since written up --comment, on Commands.
the line in the docs

| `/code-review [low\|medium\|high\|xhigh\|max\|ultra] [--fix] [--comment] [pr#\|branch\|path]` | **[Skill](/docs/en/skills#bundled-skills).** Review the current diff, or a PR number, branch, or path you pass, for correctness bugs. Dependi…

v2.1.277/code-review ultra Documentation arrivedAnthropic's documentation has since written up /code-review ultra, on Commands.
the line in the docs

**Before you ship.** `/diff` shows what changed. `/code-review` checks the current diff for correctness bugs and can apply the findings with `--fix`; pass a PR number, such as `/code-review high 1234`, to review a pull request instead. `/r…

v2.1.277/code-review ultra Documentation arrivedAnthropic's documentation has since written up /code-review ultra, on Commands.
the line in the docs

**Before you ship.** `/diff` shows what changed. `/code-review` checks the current diff for correctness bugs and can apply the findings with `--fix`; pass a PR number, such as `/code-review high 1234`, to review a pull request instead. `/r…

v2.1.273/diff Documentation arrivedAnthropic's documentation has since written up /diff, on Commands.
the line in the docs

**Before you ship.** `/diff` shows what changed. `/code-review` checks the current diff for correctness bugs and can apply the findings with `--fix`; pass a PR number, such as `/code-review high 1234`, to review a pull request instead. `/r…

v2.1.274/review Documentation arrivedAnthropic's documentation has since written up /review, on Commands.
the line in the docs

**Before you ship.** `/diff` shows what changed. `/code-review` checks the current diff for correctness bugs and can apply the findings with `--fix`; pass a PR number, such as `/code-review high 1234`, to review a pull request instead. `/r…

v2.1.251extraKnownMarketplaces Documentation arrivedA small documentation edit on Configure cloud environments touched a line naming extraKnownMarketplaces after this was published.
the line in the docs

| Plugins and marketplaces declared in your repo's `.claude/settings.json` | No | A cloud session doesn't install the plugins a repository turns on under [`enabledPlugins`](/docs/en/settings-reference#enabledplugins), including ones from t…

v2.1.275insert Documentation arrivedA small documentation edit on compliance-sessions touched a line naming insert after this was published.
the line in the docs

* `synthetic_marker` marks records generated by the endpoint itself, such as the marker that stands in for the system prompt. When the client rewrites or compacts its conversation history mid-session (for example, after context compaction)…

v2.1.277claude-sonnet-5 Documentation arrivedAnthropic's documentation has since written up claude-sonnet-5, on browser-use-tool.
the line in the docs

- claude-sonnet-5

v2.1.277claude-fable-5-1 Documentation arrivedAnthropic's documentation has since written up claude-fable-5-1, on browser-use-tool.
the line in the docs

- claude-fable-5-1

v2.1.206tengu_umber_kestrel Flag reading movedThe flag server now returns off for tengu_umber_kestrel, read as this account.
v2.1.239tengu_toasty_breeze Flag reading movedThe flag server now returns {"enabled":false,"version":0} for tengu_toasty_breeze, read as this account.
v2.1.239tengu_toasty_breeze Flag reading movedThe flag server now returns {"enabled":false,"version":0} for tengu_toasty_breeze, read as this account.
v2.1.248tengu_nifty_lemur Flag reading movedThe flag server now returns {"enabled":false,"version":0} for tengu_nifty_lemur, read as this account.
v2.1.248tengu_nifty_lemur Flag reading movedThe flag server now returns {"enabled":false,"version":0} for tengu_nifty_lemur, read as this account.
v2.1.223tengu_juniper_relay Flag reading movedThe flag server now returns off for tengu_juniper_relay, read as this account.
v2.1.251tengu_juniper_relay Flag reading movedThe flag server now returns off for tengu_juniper_relay, read as this account.
v2.1.268gatewayInternalNetworks Documentation arrivedA small documentation edit on Configure server-managed settings touched a line naming gatewayInternalNetworks after this was published.
the line in the docs

* **Gateway sign-in keys**: Claude Code never reads [`forceLoginGatewayUrl`](/docs/en/settings-reference#forcelogingatewayurl), [`gatewayInternalNetworks`](/docs/en/settings-reference#gatewayinternalnetworks), or the `"gateway"` value of […

v2.1.268gatewayInternalNetworks Documentation arrivedA small documentation edit on Configure server-managed settings touched a line naming gatewayInternalNetworks after this was published.
the line in the docs

* **Gateway sign-in keys**: Claude Code never reads [`forceLoginGatewayUrl`](/docs/en/settings-reference#forcelogingatewayurl), [`gatewayInternalNetworks`](/docs/en/settings-reference#gatewayinternalnetworks), or the `"gateway"` value of […

Feedback