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 |
|---|---|---|
v2.1.299tengu_glowing_lark |
Flag reading movedThe flag server now returns off for tengu_glowing_lark, read as this account. | |
v2.1.265tengu_curious_tower_stateless_models |
Flag reading movedThe flag server now returns "fable-5-1, opus-5, opus-4-8" for tengu_curious_tower_stateless_models, read as this account. | |
v2.1.304cleanupPeriodDays |
Documentation arrivedA small documentation edit on Monitoring touched a line naming cleanupPeriodDays after this was published.
the line in the docs* `"remote_settings_unknowable"`: A session in Claude Desktop's Code tab on a third-party deployment requested [server-managed settings](https://code.claude.com/docs/en/server-managed-settings.md). It received no usable response, so `clean… |
|
v2.1.299/restart |
Documentation arrivedA small documentation edit on Interactive mode touched a line naming /restart after this was published.
the line in the docs* **The conversation changes hands**: you switch accounts with `/login`, clear or rewind the conversation, `/resume` another session, pull one with `/teleport`, relaunch with `/tui` or [`/restart`](https://code.claude.com/docs/en/commands#… |
|
v2.1.288/restart |
Documentation arrivedA small documentation edit on Interactive mode touched a line naming /restart after this was published.
the line in the docs* **The conversation changes hands**: you switch accounts with `/login`, clear or rewind the conversation, `/resume` another session, pull one with `/teleport`, relaunch with `/tui` or [`/restart`](https://code.claude.com/docs/en/commands#… |
|
v2.1.288/restart |
Documentation arrivedA small documentation edit on Interactive mode touched a line naming /restart after this was published.
the line in the docs* **The conversation changes hands**: you switch accounts with `/login`, clear or rewind the conversation, `/resume` another session, pull one with `/teleport`, relaunch with `/tui` or [`/restart`](https://code.claude.com/docs/en/commands#… |
|
v2.1.288/restart |
Documentation arrivedA small documentation edit on Interactive mode touched a line naming /restart after this was published.
the line in the docs* **The conversation changes hands**: you switch accounts with `/login`, clear or rewind the conversation, `/resume` another session, pull one with `/teleport`, relaunch with `/tui` or [`/restart`](https://code.claude.com/docs/en/commands#… |
|
v2.1.288/restart |
Documentation arrivedA small documentation edit on Interactive mode touched a line naming /restart after this was published.
the line in the docs* **The conversation changes hands**: you switch accounts with `/login`, clear or rewind the conversation, `/resume` another session, pull one with `/teleport`, relaunch with `/tui` or [`/restart`](https://code.claude.com/docs/en/commands#… |
|
v2.1.307/resume |
Documentation arrivedA small documentation edit on Interactive mode touched a line naming /resume after this was published.
the line in the docs* **The conversation changes hands**: you switch accounts with `/login`, clear or rewind the conversation, `/resume` another session, pull one with `/teleport`, relaunch with `/tui` or [`/restart`](https://code.claude.com/docs/en/commands#… |
|
v2.1.310/teleport |
Documentation arrivedA small documentation edit on Interactive mode touched a line naming /teleport after this was published.
the line in the docs* **The conversation changes hands**: you switch accounts with `/login`, clear or rewind the conversation, `/resume` another session, pull one with `/teleport`, relaunch with `/tui` or [`/restart`](https://code.claude.com/docs/en/commands#… |
|
v2.1.300/teleport |
Documentation arrivedA small documentation edit on Interactive mode touched a line naming /teleport after this was published.
the line in the docs* **The conversation changes hands**: you switch accounts with `/login`, clear or rewind the conversation, `/resume` another session, pull one with `/teleport`, relaunch with `/tui` or [`/restart`](https://code.claude.com/docs/en/commands#… |
|
v2.1.300/teleport |
Documentation arrivedA small documentation edit on Interactive mode touched a line naming /teleport after this was published.
the line in the docs* **The conversation changes hands**: you switch accounts with `/login`, clear or rewind the conversation, `/resume` another session, pull one with `/teleport`, relaunch with `/tui` or [`/restart`](https://code.claude.com/docs/en/commands#… |
|
v2.1.288/teleport |
Documentation arrivedA small documentation edit on Interactive mode touched a line naming /teleport after this was published.
the line in the docs* **The conversation changes hands**: you switch accounts with `/login`, clear or rewind the conversation, `/resume` another session, pull one with `/teleport`, relaunch with `/tui` or [`/restart`](https://code.claude.com/docs/en/commands#… |
|
v2.1.311/code-review |
Documentation arrivedA small documentation edit on Code Review costs and usage touched a line naming /code-review after this was published.
the line in the docs| Code Review findings | Daily count of [findings by severity level](https://code.claude.com/docs/en/code-review-pull-requests.md#severity-levels), from reviews Claude posted over the selected time range | |
|
v2.1.311ultrathink |
Documentation arrivedA small documentation edit on Customize your status line touched a line naming ultrathink after this was published.
the line in the docs| `effort.level` | Reasoning effort level set for the session (`low`, `medium`, `high`, `xhigh`, or `max`), not one that a skill, a subagent, or `ultrathink` set. If you set a level the model doesn't support, this shows the level Claude Co… |
|
v2.1.309CLAUDE_RUNNER_ALIVE_EVERY_MS |
Documentation arrivedAnthropic's documentation has since written up CLAUDE_RUNNER_ALIVE_EVERY_MS, on Customize sessions in self-hosted environments.
the line in the docs| `CLAUDE_RUNNER_ALIVE_EVERY_MS` | The runner sets how often, in milliseconds, the child reports that it's alive when a [turn starts before the child initializes](https://code.claude.com/docs/en/self-hosted-environments-reference.md#sessio… |
|
v2.1.311ultrathink |
Documentation arrivedAnthropic's documentation has since written up ultrathink, on Hooks reference.
the line in the docs| `effort` | Object whose `level` is the [effort level](https://code.claude.com/docs/en/model-config.md#adjust-effort-level) setting when the hook runs, including a skill's, subagent's, or `ultrathink` level: `"low"`, `"medium"`, `"high"`,… |
|
v2.1.312PreToolUse |
Documentation arrivedAnthropic's documentation has since written up PreToolUse, on Hooks reference.
the line in the docs| `effort` | Object whose `level` is the [effort level](https://code.claude.com/docs/en/model-config.md#adjust-effort-level) setting when the hook runs, including a skill's, subagent's, or `ultrathink` level: `"low"`, `"medium"`, `"high"`,… |
|
v2.1.300/goal |
Documentation arrivedA small documentation edit on Keep Claude working toward a goal touched a line naming /goal after this was published.
the line in the docs> Claude Code reads `ANTHROPIC_DEFAULT_HAIKU_MODEL` everywhere it uses the small fast model, not only for `/goal` evaluation. When you set it, Claude Code also resolves the [`haiku` alias](https://code.claude.com/docs/en/model-config#model… |
|
v2.1.311--resume |
Documentation arrivedAnthropic's documentation has since written up --resume, on Use Claude Code in the cloud.
the line in the docs* **Using `--teleport`**: from the command line, run `claude --teleport` for an interactive session picker, or `claude --teleport <session-id>` to resume a specific session directly. If you have uncommitted changes, you'll be prompted to s… |
|
v2.1.301disallowed_tools |
Documentation arrivedA small documentation edit on Agent SDK reference - Python touched a line naming disallowed_tools after this was published.
the line in the docs**Tool name:** `TaskStop`. You can still use the previous names `KillShell` and `KillBash` in permission rules, in hook matchers, and in the `tools`, `allowed_tools`, and `disallowed_tools` options. |
|
v2.1.299disallowed_tools |
Documentation arrivedA small documentation edit on Agent SDK reference - Python touched a line naming disallowed_tools after this was published.
the line in the docs**Tool name:** `TaskStop`. You can still use the previous names `KillShell` and `KillBash` in permission rules, in hook matchers, and in the `tools`, `allowed_tools`, and `disallowed_tools` options. |
|
v2.1.299disallowed_tools |
Documentation arrivedA small documentation edit on Agent SDK reference - Python touched a line naming disallowed_tools after this was published.
the line in the docs**Tool name:** `TaskStop`. You can still use the previous names `KillShell` and `KillBash` in permission rules, in hook matchers, and in the `tools`, `allowed_tools`, and `disallowed_tools` options. |
|
v2.1.312.claude/settings.local.json |
Documentation arrivedA small documentation edit on Use Claude Code features in the SDK touched a line naming .claude/settings.local.json after this was published.
the line in the docs| `"local"` | CLAUDE.local.md, `.claude/settings.local.json` | `<cwd>/.claude/` for `settings.local.json`, which [can also load from the repository's root](https://code.claude.com/docs/en/settings.md#where-claude-code-keeps-the-local-file-… |
|
v2.1.259tengu_review_bughunter_config |
Flag reading movedThe flag server now returns {"agent_timeout_seconds":600,"cost_note":"$5-$25","duration_note":"~5-15 min","enabled":true,"fleet_size":5,"max_duration_minutes":10,"total_wallclock_minutes":22,"typical_cost_usd":20} for tengu_review_bughunter_config, read as this account. | |
v2.1.259tengu_review_bughunter_config |
Flag reading movedThe flag server now returns {"agent_timeout_seconds":600,"cost_note":"$5-$25","duration_note":"~5-15 min","enabled":true,"fleet_size":5,"max_duration_minutes":10,"total_wallclock_minutes":22,"typical_cost_usd":20} for tengu_review_bughunter_config, read as this account. | |
v2.1.312/login |
Documentation arrivedA small documentation edit on Share session output as artifacts touched a line naming /login after this was published.
the line in the docs| Authentication | The session is backed by a claude.ai account: sign in with `/login` in the CLI or desktop app. Claude Tag sessions need no sign-in step. Sessions using an API key, [gateway token](https://code.claude.com/docs/en/llm-gate… |
|
v2.1.312/login |
Documentation arrivedA small documentation edit on Share session output as artifacts touched a line naming /login after this was published.
the line in the docs| Authentication | The session is backed by a claude.ai account: sign in with `/login` in the CLI or desktop app. Claude Tag sessions need no sign-in step. Sessions using an API key, [gateway token](https://code.claude.com/docs/en/llm-gate… |
|
v2.1.309CLAUDE_CODE_OAUTH_TOKEN |
Documentation arrivedAnthropic's documentation has since written up CLAUDE_CODE_OAUTH_TOKEN, on Persist sessions to external storage.
the line in the docs* **Long-lived token**: if you run the agent yourself under your own Claude subscription, set `CLAUDE_CODE_OAUTH_TOKEN` in `env` to a token from [`claude setup-token`](https://code.claude.com/docs/en/authentication#generate-a-long-lived-to… |
|
v2.1.309CLAUDE_CODE_OAUTH_TOKEN |
Documentation arrivedAnthropic's documentation has since written up CLAUDE_CODE_OAUTH_TOKEN, on Persist sessions to external storage.
the line in the docs* **Long-lived token**: if you run the agent yourself under your own Claude subscription, set `CLAUDE_CODE_OAUTH_TOKEN` in `env` to a token from [`claude setup-token`](https://code.claude.com/docs/en/authentication#generate-a-long-lived-to… |
|
v2.1.311CLAUDE_CONFIG_DIR |
Documentation arrivedAnthropic's documentation has since written up CLAUDE_CONFIG_DIR, on Persist sessions to external storage.
the line in the docsIf you don't want a fresh session to leave a transcript on local disk, set `CLAUDE_CONFIG_DIR` to a new, private temp directory in `options.env`. A run resumed from the store already deletes its local copy, so it needs no such setting. In … |
|
v2.1.311/config |
Documentation arrivedA small documentation edit on Telemetry and egress touched a line naming /config after this was published.
the line in the docsFor third-party deployments, the export includes session metadata (event names, durations, token counts, result counts, errors) by default, but not message content. It also identifies the signed-in user; see [User attribution](#user-attrib… |
|
v2.1.311/config |
Documentation arrivedA small documentation edit on Telemetry and egress touched a line naming /config after this was published.
the line in the docsFor third-party deployments, the export includes session metadata (event names, durations, token counts, result counts, errors) by default, but not message content. It also identifies the signed-in user; see [User attribution](#user-attrib… |
|
v2.1.312traceparent |
Documentation arrivedA small documentation edit on opentelemetry touched a line naming traceparent after this was published.
the line in the docsExported spans aren’t guaranteed to be a complete record of your API usage. Their delivery is [best effort](https://platform.claude.com/docs/en/manage-claude/opentelemetry/api#delivery-and-health), so a span can be lost. A caller can also … |
|
v2.1.311tengu_wobbly_petal |
Flag reading movedThe flag server now returns {"sdkHosts":false,"sessionModelFamilies":["sonnet","opus","haiku","fable","other"]} for tengu_wobbly_petal, read as this account. | |
v2.1.206tengu_umber_kestrel |
Flag reading movedThe flag server now returns on for tengu_umber_kestrel, read as this account. | |
v2.1.239tengu_toasty_breeze |
Flag reading movedThe flag server now returns {"allowanceNote":"{percent} allowance left","budgetExhaustedCopy":"You've used this week's lower-priority allowance","cooloffMinutes":10,"enabled":true,"label":"Continue now at lower priority","noticeLine":"/low-priority to continue now at lower priority · uses your weekly limit","statusLine":"Lower priority until {reset}","version":3,"waitBanner":"Working at lower priority · waiting for capacity"} for tengu_toasty_breeze, read as this account. | |
v2.1.239tengu_toasty_breeze |
Flag reading movedThe flag server now returns {"allowanceNote":"{percent} allowance left","budgetExhaustedCopy":"You've used this week's lower-priority allowance","cooloffMinutes":10,"enabled":true,"label":"Continue now at lower priority","noticeLine":"/low-priority to continue now at lower priority · uses your weekly limit","statusLine":"Lower priority until {reset}","version":3,"waitBanner":"Working at lower priority · waiting for capacity"} for tengu_toasty_breeze, read as this account. | |
v2.1.307tengu_sunny_locket |
Flag reading movedThe flag server now returns {"mode":"compact"} for tengu_sunny_locket, read as this account. | |
v2.1.302tengu_sunny_locket |
Flag reading movedThe flag server now returns {"mode":"compact"} for tengu_sunny_locket, read as this account. | |
v2.1.300tengu_sunny_locket |
Flag reading movedThe flag server now returns {"mode":"compact"} for tengu_sunny_locket, read as this account. | |
v2.1.290tengu_sunny_locket |
Flag reading movedThe flag server now returns {"mode":"compact"} for tengu_sunny_locket, read as this account. | |
v2.1.283tengu_sunny_locket |
Flag reading movedThe flag server now returns {"mode":"compact"} for tengu_sunny_locket, read as this account. | |
v2.1.283tengu_sunny_locket |
Flag reading movedThe flag server now returns {"mode":"compact"} for tengu_sunny_locket, read as this account. | |
v2.1.282tengu_smooth_chipmunk |
Flag reading movedThe flag server now returns on for tengu_smooth_chipmunk, read as this account. | |
v2.1.281tengu_smooth_chipmunk |
Flag reading movedThe flag server now returns on for tengu_smooth_chipmunk, read as this account. | |
v2.1.281tengu_smooth_chipmunk |
Flag reading movedThe flag server now returns on for tengu_smooth_chipmunk, read as this account. | |
v2.1.269tengu_smooth_chipmunk |
Flag reading movedThe flag server now returns on for tengu_smooth_chipmunk, read as this account. | |
v2.1.261tengu_smooth_chipmunk |
Flag reading movedThe flag server now returns on for tengu_smooth_chipmunk, read as this account. | |
v2.1.261tengu_smooth_chipmunk |
Flag reading movedThe flag server now returns on for tengu_smooth_chipmunk, read as this account. |