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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
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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.

Events22,542dated, and never edited afterwards
Newestthe last time anything moved
Flag readings moved17,190a reading is one sample, for one account
Documentation arrived5,242a docs edit touched an entry's names
WhenEntryWhat happened
v2.1.314/sandbox Documentation arrivedA small documentation edit on Choose a permission mode touched a line naming /sandbox after this was published.
the line in the docs

* Writes outside the working directories while [`permissions.blockWritesOutsideWorkingDirectories`](https://code.claude.com/docs/en/settings-reference#permissions-blockwritesoutsideworkingdirectories) is on: Claude Code refuses `Write`, `E…
v2.1.311/sandbox Documentation arrivedA small documentation edit on Choose a permission mode touched a line naming /sandbox after this was published.
the line in the docs

* Writes outside the working directories while [`permissions.blockWritesOutsideWorkingDirectories`](https://code.claude.com/docs/en/settings-reference#permissions-blockwritesoutsideworkingdirectories) is on: Claude Code refuses `Write`, `E…
v2.1.315--mcp-config Documentation arrivedAnthropic's documentation has since written up --mcp-config, on Error reference.
the line in the docs

* **A file you passed to `--agents` or `--mcp-config`**: edit it yourself
v2.1.311--mcp-config Documentation arrivedAnthropic's documentation has since written up --mcp-config, on Error reference.
the line in the docs

* **A file you passed to `--agents` or `--mcp-config`**: edit it yourself
v2.1.314permissions.blockWritesOutsideWorkingDirectories Documentation arrivedAnthropic's documentation has since written up permissions.blockWritesOutsideWorkingDirectories, on Error reference.
the line in the docs

| `<path> is outside <dirs>; the permissions.blockWritesOutsideWorkingDirectories setting blocks writes outside the working directories` | [Tool errors](#setting-blocks-writes-outside-the-working-directories) |
v2.1.314blockWritesOutsideWorkingDirectories Documentation arrivedAnthropic's documentation has since written up blockWritesOutsideWorkingDirectories, on Error reference.
the line in the docs

| `<path> is outside <dirs>; the permissions.blockWritesOutsideWorkingDirectories setting blocks writes outside the working directories` | [Tool errors](#setting-blocks-writes-outside-the-working-directories) |
v2.1.314blockWritesOutsideWorkingDirectories Documentation arrivedAnthropic's documentation has since written up blockWritesOutsideWorkingDirectories, on Error reference.
the line in the docs

| `<path> is outside <dirs>; the permissions.blockWritesOutsideWorkingDirectories setting blocks writes outside the working directories` | [Tool errors](#setting-blocks-writes-outside-the-working-directories) |
v2.1.315availableModels Documentation arrivedA small documentation edit on Deploy Claude apps gateway on AWS touched a line naming availableModels after this was published.
the line in the docs

By default, the gateway applies the [first policy that matches](https://code.claude.com/docs/en/claude-apps-gateway-config.md#managed), so a developer in only the two team groups gets the `team-platform` policy. Their sessions on the data …
v2.1.314availableModels Documentation arrivedA small documentation edit on Deploy Claude apps gateway on AWS touched a line naming availableModels after this was published.
the line in the docs

By default, the gateway applies the [first policy that matches](https://code.claude.com/docs/en/claude-apps-gateway-config.md#managed), so a developer in only the two team groups gets the `team-platform` policy. Their sessions on the data …
v2.1.310availableModels Documentation arrivedA small documentation edit on Deploy Claude apps gateway on AWS touched a line naming availableModels after this was published.
the line in the docs

By default, the gateway applies the [first policy that matches](https://code.claude.com/docs/en/claude-apps-gateway-config.md#managed), so a developer in only the two team groups gets the `team-platform` policy. Their sessions on the data …
v2.1.299availableModels Documentation arrivedA small documentation edit on Deploy Claude apps gateway on AWS touched a line naming availableModels after this was published.
the line in the docs

By default, the gateway applies the [first policy that matches](https://code.claude.com/docs/en/claude-apps-gateway-config.md#managed), so a developer in only the two team groups gets the `team-platform` policy. Their sessions on the data …
v2.1.314modelOverrides Documentation arrivedAnthropic's documentation has since written up modelOverrides, on Claude apps gateway configuration.
the line in the docs

* **`env`, `modelOverrides`, and `skillOverrides`**: entries merge by name, and the first-listed matching policy that sets a name supplies its value.
v2.1.310modelOverrides Documentation arrivedAnthropic's documentation has since written up modelOverrides, on Claude apps gateway configuration.
the line in the docs

* **`env`, `modelOverrides`, and `skillOverrides`**: entries merge by name, and the first-listed matching policy that sets a name supplies its value.
v2.1.315input_tagging Documentation arrivedAnthropic's documentation has since written up input_tagging, on Claude apps gateway configuration.
the line in the docs

> By default the gateway adds no input tags to prompts, so a guardrail filter that Amazon Bedrock applies only to tagged input doesn't run on traffic through the gateway. To add the tags, set [`input_tagging`](#add-guardrail-input-tags). F…
v2.1.314/permissions Documentation arrivedA small documentation edit on Best practices for Claude Code touched a line naming /permissions after this was published.
the line in the docs

When auto mode blocks an action, you get a notification and the action shows up under **Recently blocked** in `/permissions`, where you can [approve the action so Claude may retry](https://code.claude.com/docs/en/auto-mode-config.md#review…
v2.1.314PermissionDenied Documentation arrivedAnthropic's documentation has since written up PermissionDenied, on Configure auto mode.
the line in the docs

* **Hook**: to capture the exact input of denials programmatically, add a [`PermissionDenied` hook](https://code.claude.com/docs/en/hooks#permissiondenied), which receives it as `tool_input`. If your hook reads `reason`, expect no `Auto mo…
v2.1.314/effort Documentation arrivedAnthropic's documentation has since written up /effort, on effort.
the line in the docs

Where your platform supports it, Claude Haiku 5.5 also lets you [change effort mid-conversation](https://platform.claude.com/docs/en/build-with-claude/effort#change-effort-mid-conversation-beta) with a per-message `output_config`, which pr…
v2.1.314/effort Documentation arrivedAnthropic's documentation has since written up /effort, on effort.
the line in the docs

Where your platform supports it, Claude Haiku 5.5 also lets you [change effort mid-conversation](https://platform.claude.com/docs/en/build-with-claude/effort#change-effort-mid-conversation-beta) with a per-message `output_config`, which pr…
v2.1.314/effort Documentation arrivedAnthropic's documentation has since written up /effort, on effort.
the line in the docs

Where your platform supports it, Claude Haiku 5.5 also lets you [change effort mid-conversation](https://platform.claude.com/docs/en/build-with-claude/effort#change-effort-mid-conversation-beta) with a per-message `output_config`, which pr…
v2.1.314/effort Documentation arrivedA small documentation edit on anthropic-managed touched a line naming /effort after this was published.
the line in the docs

* [Effort](https://platform.claude.com/docs/en/build-with-claude/effort)
v2.1.314/effort Documentation arrivedA small documentation edit on anthropic-managed touched a line naming /effort after this was published.
the line in the docs

* [Effort](https://platform.claude.com/docs/en/build-with-claude/effort)
v2.1.314/effort Documentation arrivedA small documentation edit on anthropic-managed touched a line naming /effort after this was published.
the line in the docs

* [Effort](https://platform.claude.com/docs/en/build-with-claude/effort)
v2.1.312/effort Documentation arrivedA small documentation edit on anthropic-managed touched a line naming /effort after this was published.
the line in the docs

* [Effort](https://platform.claude.com/docs/en/build-with-claude/effort)
v2.1.312/effort Documentation arrivedA small documentation edit on anthropic-managed touched a line naming /effort after this was published.
the line in the docs

* [Effort](https://platform.claude.com/docs/en/build-with-claude/effort)
v2.1.312/effort Documentation arrivedA small documentation edit on anthropic-managed touched a line naming /effort after this was published.
the line in the docs

* [Effort](https://platform.claude.com/docs/en/build-with-claude/effort)
v2.1.312/effort Documentation arrivedA small documentation edit on anthropic-managed touched a line naming /effort after this was published.
the line in the docs

* [Effort](https://platform.claude.com/docs/en/build-with-claude/effort)
v2.1.311/effort Documentation arrivedA small documentation edit on anthropic-managed touched a line naming /effort after this was published.
the line in the docs

* [Effort](https://platform.claude.com/docs/en/build-with-claude/effort)
v2.1.315form Documentation arrivedA small documentation edit on anthropic-managed touched a line naming form after this was published.
the line in the docs

* [Adaptive thinking](https://platform.claude.com/docs/en/build-with-claude/thinking#configuring-thinking)
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.
v2.1.314tengu_sunny_locket Flag reading movedThe flag server now returns {"mode":"compact"} for tengu_sunny_locket, 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.
v2.1.273tengu_quiet_dolphin Flag reading movedThe flag server now returns on for tengu_quiet_dolphin, read as this account.
v2.1.248tengu_nifty_lemur Flag reading movedThe flag server now returns {"autoContinue":true,"enabled":true,"label":"Reset your session limit now","noticeLine":"/limit-reset to reset your session limit now · uses weekly limit · 1/week","spentLine":"Weekly reset used · available again {date}","successLine":"Session limit reset · next reset available {date} · your weekly limit still applies","unavailableLine":"Couldn't reset your session limit right now · try again in a moment","version":1} for tengu_nifty_lemur, read as this account.
v2.1.248tengu_nifty_lemur Flag reading movedThe flag server now returns {"autoContinue":true,"enabled":true,"label":"Reset your session limit now","noticeLine":"/limit-reset to reset your session limit now · uses weekly limit · 1/week","spentLine":"Weekly reset used · available again {date}","successLine":"Session limit reset · next reset available {date} · your weekly limit still applies","unavailableLine":"Couldn't reset your session limit right now · try again in a moment","version":1} for tengu_nifty_lemur, read as this account.
v2.1.246tengu_misty_anchor Flag reading movedThe flag server now returns off for tengu_misty_anchor, read as this account.
v2.1.246tengu_misty_anchor Flag reading movedThe flag server now returns off for tengu_misty_anchor, read as this account.
v2.1.247tengu_misty_anchor Flag reading movedThe flag server now returns off for tengu_misty_anchor, read as this account.
v2.1.271tengu_misty_anchor Flag reading movedThe flag server now returns off for tengu_misty_anchor, read as this account.
v2.1.271tengu_misty_anchor Flag reading movedThe flag server now returns off for tengu_misty_anchor, read as this account.
v2.1.267tengu_misty_anchor Flag reading movedThe flag server now returns off for tengu_misty_anchor, read as this account.
v2.1.267tengu_misty_anchor Flag reading movedThe flag server now returns off for tengu_misty_anchor, read as this account.
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.
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