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Sweep 06 Nov 2026 · 01:32Z Build v2.1.319 537 read Stable v2.1.311 Latest v2.1.319 Next v2.1.319 Feeds RSS JSON llms.txt llms-full.txt Unofficial
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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.

Events22,665dated, and never edited afterwards
Newestthe last time anything moved
Flag readings moved17,292a reading is one sample, for one account
Documentation arrived5,263a docs edit touched an entry's names
WhenEntryWhat happened
v2.1.284tengu_lantern_wick_text Flag reading movedThe flag server now returns "Usage limit reached; a short grace allowance remains, then this turn is cut off without warning. Judge what's left: if it's genuinely only a few steps, finish it properly, then stop and say so without extra polishing. Otherwise don't attempt it all: finish the piece in hand and at most two more like it, then stop. The allowance also pays for any subagents you have running: they don't get this message and will keep going, so it's up to you how to handle them. Either way, end by telling the user their usage limit was reached, what's done and what's left." for tengu_lantern_wick_text, read as this account.
v2.1.223tengu_juniper_relay Flag reading movedThe flag server now returns on for tengu_juniper_relay, read as this account.
v2.1.251tengu_juniper_relay Flag reading movedThe flag server now returns on for tengu_juniper_relay, read as this account.
v2.1.265tengu_curious_tower_stateless_models Flag reading movedThe flag server now returns "" for tengu_curious_tower_stateless_models, read as this account.
v2.1.299tengu_steadfast_wren Flag reading movedThe flag server now returns nothing at all, having stopped carrying it for tengu_steadfast_wren, read as this account.
v2.1.299tengu_mellow_heron Flag reading movedThe flag server now returns nothing at all, having stopped carrying it for tengu_mellow_heron, read as this account.
v2.1.287tengu_violin_volute Flag reading movedThe flag server now returns on for tengu_violin_volute, read as this account.
v2.1.299tengu_projects_compact_thread_rule_enabled Flag reading movedThe flag server now returns on for tengu_projects_compact_thread_rule_enabled, read as this account.
v2.1.287tengu_violin_volute Flag reading movedThe flag server now returns off for tengu_violin_volute, read as this account.
v2.1.299tengu_steadfast_wren Flag reading movedThe flag server now returns off for tengu_steadfast_wren, read as this account.
v2.1.299tengu_projects_compact_thread_rule_enabled Flag reading movedThe flag server now returns off for tengu_projects_compact_thread_rule_enabled, read as this account.
v2.1.299tengu_mellow_heron Flag reading movedThe flag server now returns off for tengu_mellow_heron, read as this account.
v2.1.296forceLoginMethod Documentation arrivedAnthropic's documentation has since written up forceLoginMethod, on Claude Code changelog.
the line in the docs

* Fixed `forceLoginOrgUUID` and `forceLoginMethod` from MDM or the managed-settings file being hidden or replaced by server-managed settings
v2.1.295--mcp-config Documentation arrivedAnthropic's documentation has since written up --mcp-config, on Claude Code changelog.
the line in the docs

* Fixed self-hosted runner sessions shutting down MCP servers added through an `--exec-path` wrapper's own `--mcp-config` when connectors change mid-session
v2.1.296prompt.submit Documentation arrivedAnthropic's documentation has since written up prompt.submit, on Claude Code changelog.
the line in the docs

* Added `$.prompt.media` so a `prompt.submit` hook of a mod installed by managed settings can read the bytes of an image or document attached to the prompt
v2.1.299tengu_steadfast_wren Flag reading movedThe flag server now returns nothing at all, having stopped carrying it for tengu_steadfast_wren, read as this account.
v2.1.299tengu_mellow_heron Flag reading movedThe flag server now returns nothing at all, having stopped carrying it for tengu_mellow_heron, read as this account.
v2.1.287tengu_violin_volute Flag reading movedThe flag server now returns on for tengu_violin_volute, read as this account.
v2.1.299tengu_projects_compact_thread_rule_enabled Flag reading movedThe flag server now returns on for tengu_projects_compact_thread_rule_enabled, read as this account.
v2.1.299tengu_merry_tide Flag reading movedThe flag server now returns off for tengu_merry_tide, read as this account.
v2.1.285disableBundledSkills Documentation arrivedA small documentation edit on Extend Claude with skills touched a line naming disableBundledSkills after this was published.
the line in the docs

The [`/doctor`](/docs/en/commands#all-commands) setup checkup stays typable when `disableBundledSkills` is on. To hide it, set the `DISABLE_DOCTOR_COMMAND` environment variable or a [`skillOverrides`](#override-skill-visibility-from-settin…
v2.1.296skillOverrides Documentation arrivedA small documentation edit on Extend Claude with skills touched a line naming skillOverrides after this was published.
the line in the docs

The [`/doctor`](/docs/en/commands#all-commands) setup checkup stays typable when `disableBundledSkills` is on. To hide it, set the `DISABLE_DOCTOR_COMMAND` environment variable or a [`skillOverrides`](#override-skill-visibility-from-settin…
v2.1.285skillOverrides Documentation arrivedA small documentation edit on Extend Claude with skills touched a line naming skillOverrides after this was published.
the line in the docs

The [`/doctor`](/docs/en/commands#all-commands) setup checkup stays typable when `disableBundledSkills` is on. To hide it, set the `DISABLE_DOCTOR_COMMAND` environment variable or a [`skillOverrides`](#override-skill-visibility-from-settin…
v2.1.295--effort Documentation arrivedAnthropic's documentation has since written up --effort, on All settings.
the line in the docs

* **Per-session overrides**: `/effort ultracode` turns ultracode on for one session without this key, and `/effort ultracode off` turns it off for one session when this key is `true`. The `--effort ultracode` flag also turns it on for one …
v2.1.292/workflows Documentation arrivedA small documentation edit on Monitoring touched a line naming /workflows after this was published.
the line in the docs

* `workflow.run_id`: run identifier, prefixed `wf_`, on the API and tool events emitted by agents that belong to a [Workflow](/docs/en/workflows) tool run. Filtering events by one `workflow.run_id` reconstructs that run's API requests and …
v2.1.290/doctor Documentation arrivedA small documentation edit on How Claude remembers your project touched a line naming /doctor after this was published.
the line in the docs

The [`/doctor`](/docs/en/commands#all-commands) checkup proposes trims for a checked-in CLAUDE.md: it cuts content Claude can derive from the codebase, such as directory layouts, dependency lists, and architecture overviews, and keeps pitf…
v2.1.287ANTHROPIC_CUSTOM_HEADERS Documentation arrivedA small documentation edit on Connect Claude Code to an LLM gateway touched a line naming ANTHROPIC_CUSTOM_HEADERS after this was published.
the line in the docs

For a gateway that injects its own `Authorization` header, set `CLAUDE_CODE_SKIP_FOUNDRY_AUTH=1` and leave both credential variables unset. Claude Code then sends requests without an Azure credential and preserves the `Authorization` heade…
v2.1.287ANTHROPIC_CUSTOM_HEADERS Documentation arrivedA small documentation edit on Connect Claude Code to an LLM gateway touched a line naming ANTHROPIC_CUSTOM_HEADERS after this was published.
the line in the docs

For a gateway that injects its own `Authorization` header, set `CLAUDE_CODE_SKIP_FOUNDRY_AUTH=1` and leave both credential variables unset. Claude Code then sends requests without an Azure credential and preserves the `Authorization` heade…
v2.1.284extensions.worktreeConfig Documentation arrivedA small documentation edit on Set up Claude Code in a monorepo or large codebase touched a line naming extensions.worktreeConfig after this was published.
the line in the docs

Sparse checkout requires git to enable `extensions.worktreeConfig` in the repository's shared `.git/config` while a sparse worktree exists. Claude Code removes that entry after the last worktree is removed, but only if Claude Code added it…
v2.1.293ANTHROPIC_DEFAULT_SONNET_MODEL Documentation arrivedA small documentation edit on Claude Code on Google Cloud's Agent Platform touched a line naming ANTHROPIC_DEFAULT_SONNET_MODEL after this was published.
the line in the docs

Opus models have a higher per-token price than Sonnet models, so if you don't pin a primary model, you're billed at the Opus rate. To use Sonnet 4.5 as the primary model, set `ANTHROPIC_MODEL` to its full model ID. A deployment that steers…
v2.1.288ANTHROPIC_DEFAULT_SONNET_MODEL Documentation arrivedA small documentation edit on Claude Code on Google Cloud's Agent Platform touched a line naming ANTHROPIC_DEFAULT_SONNET_MODEL after this was published.
the line in the docs

Opus models have a higher per-token price than Sonnet models, so if you don't pin a primary model, you're billed at the Opus rate. To use Sonnet 4.5 as the primary model, set `ANTHROPIC_MODEL` to its full model ID. A deployment that steers…
v2.1.290/rename Documentation arrivedA small documentation edit on Use Claude Code in the cloud touched a line naming /rename after this was published.
the line in the docs

* **`/model`, `/effort`, `/color`, and `/rename`**: pass the value as an argument, for example `/model sonnet`, instead of opening the terminal picker or slider. The argument forms follow each command's [availability notes](/docs/en/comman…
v2.1.287--json Documentation arrivedA small documentation edit on Troubleshoot plugins touched a line naming --json after this was published.
the line in the docs

To see these programmatically, run `claude plugin list --json` in your shell. Plugins with problems carry an `errors` field with the messages and an `errorDetails` field with a `type` for each: the first three rows are `dependency-unsatisf…
v2.1.287--json Documentation arrivedA small documentation edit on Troubleshoot plugins touched a line naming --json after this was published.
the line in the docs

To see these programmatically, run `claude plugin list --json` in your shell. Plugins with problems carry an `errors` field with the messages and an `errorDetails` field with a `type` for each: the first three rows are `dependency-unsatisf…
v2.1.285--json Documentation arrivedA small documentation edit on Troubleshoot plugins touched a line naming --json after this was published.
the line in the docs

To see these programmatically, run `claude plugin list --json` in your shell. Plugins with problems carry an `errors` field with the messages and an `errorDetails` field with a `type` for each: the first three rows are `dependency-unsatisf…
v2.1.285--json Documentation arrivedA small documentation edit on Troubleshoot plugins touched a line naming --json after this was published.
the line in the docs

To see these programmatically, run `claude plugin list --json` in your shell. Plugins with problems carry an `errors` field with the messages and an `errorDetails` field with a `type` for each: the first three rows are `dependency-unsatisf…
v2.1.296allow_large Documentation arrivedAnthropic's documentation has since written up allow_large, on Agent SDK reference - TypeScript.
the line in the docs

allow_large?: boolean;
v2.1.296claude_code_version Documentation arrivedAnthropic's documentation has since written up claude_code_version, on Agent SDK reference - TypeScript.
the line in the docs

claude_code_version?: string;
v2.1.296claude_code_version Documentation arrivedAnthropic's documentation has since written up claude_code_version, on Agent SDK reference - TypeScript.
the line in the docs

claude_code_version?: string;
v2.1.296claude_code_version Documentation arrivedAnthropic's documentation has since written up claude_code_version, on Agent SDK reference - TypeScript.
the line in the docs

claude_code_version?: string;
v2.1.280CLAUDE_CODE_MAX_MCP_DESCRIPTION_LENGTH Documentation arrivedAnthropic's documentation has since written up CLAUDE_CODE_MAX_MCP_DESCRIPTION_LENGTH, on Connect Claude Code to tools via MCP.
the line in the docs

To change the limits for every MCP server in your session, set [`CLAUDE_CODE_MAX_MCP_DESCRIPTION_LENGTH`](/docs/en/env-vars#variables) to a number of characters. The number you set replaces both limits: `8192`, for example, raises the shor…
v2.1.286allow_remote_sessions Documentation arrivedAnthropic's documentation has since written up allow_remote_sessions, on Use Claude Code in the cloud.
the line in the docs

| `Cloud sessions are disabled by your organization's policy. Contact your organization admin to enable them.` | Your organization's `allow_remote_sessions` policy is off; see [Cloud sessions are disabled by your organization's policy](/do…
v2.1.299tengu_merry_tide Flag reading movedThe flag server now returns nothing at all, having stopped carrying it for tengu_merry_tide, read as this account.
v2.1.287tengu_violin_volute Flag reading movedThe flag server now returns off for tengu_violin_volute, read as this account.
v2.1.246tengu_ticklish_whisper Flag reading movedThe flag server now returns off for tengu_ticklish_whisper, read as this account.
v2.1.299tengu_steadfast_wren Flag reading movedThe flag server now returns off for tengu_steadfast_wren, read as this account.
v2.1.282tengu_smooth_chipmunk Flag reading movedThe flag server now returns off for tengu_smooth_chipmunk, read as this account.
v2.1.281tengu_smooth_chipmunk Flag reading movedThe flag server now returns off for tengu_smooth_chipmunk, read as this account.
v2.1.281tengu_smooth_chipmunk Flag reading movedThe flag server now returns off for tengu_smooth_chipmunk, read as this account.
v2.1.269tengu_smooth_chipmunk Flag reading movedThe flag server now returns off for tengu_smooth_chipmunk, read as this account.
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