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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.

Events22,663dated, and never edited afterwards
Newestthe last time anything moved
Flag readings moved17,290a reading is one sample, for one account
Documentation arrived5,263a docs edit touched an entry's names
WhenEntryWhat happened
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.
v2.1.246tengu_ticklish_whisper Flag reading movedThe flag server now returns off for tengu_ticklish_whisper, read as this account.
v2.1.257tengu_elegant_pancake Flag reading movedThe flag server now returns off for tengu_elegant_pancake, read as this account.
v2.1.248tengu_ccr_no_subscriber_flush_ms Flag reading movedThe flag server now returns null for tengu_ccr_no_subscriber_flush_ms, read as this account.
v2.1.248tengu_ccr_no_subscriber_flush_ms Flag reading movedThe flag server now returns null for tengu_ccr_no_subscriber_flush_ms, read as this account.
v2.1.246tengu_ticklish_whisper Flag reading movedThe flag server now returns on for tengu_ticklish_whisper, read as this account.
v2.1.257tengu_elegant_pancake Flag reading movedThe flag server now returns on for tengu_elegant_pancake, read as this account.
v2.1.248tengu_ccr_no_subscriber_flush_ms Flag reading movedThe flag server now returns 2000 for tengu_ccr_no_subscriber_flush_ms, read as this account.
v2.1.248tengu_ccr_no_subscriber_flush_ms Flag reading movedThe flag server now returns 2000 for tengu_ccr_no_subscriber_flush_ms, read as this account.
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.
v2.1.307tengu_sunny_locket Flag reading movedThe flag server now returns {"mode":"off"} for tengu_sunny_locket, read as this account.
v2.1.302tengu_sunny_locket Flag reading movedThe flag server now returns {"mode":"off"} for tengu_sunny_locket, read as this account.
v2.1.300tengu_sunny_locket Flag reading movedThe flag server now returns {"mode":"off"} for tengu_sunny_locket, read as this account.
v2.1.290tengu_sunny_locket Flag reading movedThe flag server now returns {"mode":"off"} for tengu_sunny_locket, read as this account.
v2.1.283tengu_sunny_locket Flag reading movedThe flag server now returns {"mode":"off"} for tengu_sunny_locket, read as this account.
v2.1.283tengu_sunny_locket Flag reading movedThe flag server now returns {"mode":"off"} for tengu_sunny_locket, read as this account.
v2.1.273tengu_quiet_dolphin Flag reading movedThe flag server now returns off for tengu_quiet_dolphin, 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.
v2.1.284tengu_lantern_wick_text Flag reading movedThe flag server now returns null for tengu_lantern_wick_text, 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.
v2.1.305/effort Documentation arrivedA small documentation edit on prompting-claude-opus-5 touched a line naming /effort after this was published.
the line in the docs

* **Efficiency at lower effort:** `low` and `medium` [effort](https://platform.claude.com/docs/en/build-with-claude/effort) produce strong quality at a fraction of the tokens and latency of higher settings. Start with the default (`high`) …

v2.1.305/usage Documentation arrivedA small documentation edit on overview touched a line naming /usage after this was published.
the line in the docs

You can view your rate limits under [Rate limits in the Claude Console](https://platform.claude.com/usage/limits) and your spend limits on the Console's [Billing](https://platform.claude.com/settings/billing) page. For higher rate limits o…

v2.1.305/usage Documentation arrivedA small documentation edit on overview touched a line naming /usage after this was published.
the line in the docs

You can view your rate limits under [Rate limits in the Claude Console](https://platform.claude.com/usage/limits) and your spend limits on the Console's [Billing](https://platform.claude.com/settings/billing) page. For higher rate limits o…

v2.1.305/usage Documentation arrivedA small documentation edit on overview touched a line naming /usage after this was published.
the line in the docs

You can view your rate limits under [Rate limits in the Claude Console](https://platform.claude.com/usage/limits) and your spend limits on the Console's [Billing](https://platform.claude.com/settings/billing) page. For higher rate limits o…

v2.1.304/reload-plugins Documentation arrivedAnthropic's documentation has since written up /reload-plugins, on Troubleshoot a mod.
the line in the docs

If the reason ends with `; the version loaded before is unloaded`, no version of the mod is running now. Once you fix the error, run [`/reload-plugins`](/docs/en/plugins/cli-reference#reload-plugins) in the session to load the mod again. I…

v2.1.304network.tlsTerminate Documentation arrivedAnthropic's documentation has since written up network.tlsTerminate, on Configure server-managed settings.
the line in the docs

* **Sandbox network and isolation settings**: [sandbox](/docs/en/sandboxing) settings that let the sandbox proxy read, reroute, or authenticate traffic, or that weaken the sandbox's isolation: `sandbox.network.tlsTerminate`, `sandbox.netwo…

v2.1.305sandbox.allowNestedUserNamespaces Documentation arrivedAnthropic's documentation has since written up sandbox.allowNestedUserNamespaces, on Configure the sandboxed Bash tool.
the line in the docs

* To keep Chromium's or Electron's own sandbox, or to run a nested bubblewrap or `unshare`, set [`sandbox.allowNestedUserNamespaces`](/docs/en/settings-reference#sandbox-allownestedusernamespaces) to `true` in `~/.claude/settings.json`, no…

v2.1.305sandbox.allowNestedUserNamespaces Documentation arrivedAnthropic's documentation has since written up sandbox.allowNestedUserNamespaces, on Configure the sandboxed Bash tool.
the line in the docs

* To keep Chromium's or Electron's own sandbox, or to run a nested bubblewrap or `unshare`, set [`sandbox.allowNestedUserNamespaces`](/docs/en/settings-reference#sandbox-allownestedusernamespaces) to `true` in `~/.claude/settings.json`, no…

v2.1.305sandbox.allowNestedUserNamespaces Documentation arrivedAnthropic's documentation has since written up sandbox.allowNestedUserNamespaces, on Configure the sandboxed Bash tool.
the line in the docs

* To keep Chromium's or Electron's own sandbox, or to run a nested bubblewrap or `unshare`, set [`sandbox.allowNestedUserNamespaces`](/docs/en/settings-reference#sandbox-allownestedusernamespaces) to `true` in `~/.claude/settings.json`, no…

v2.1.304allowAllUnixSockets Documentation arrivedAnthropic's documentation has since written up allowAllUnixSockets, on Configure the sandboxed Bash tool.
the line in the docs

* `unshare -U true` prints `unshare: unshare failed: Operation not permitted`. With [`allowAllUnixSockets`](/docs/en/settings-reference#sandbox-network-allowallunixsockets) on, it can print `No space left on device` instead

v2.1.305/sandbox Documentation arrivedAnthropic's documentation has since written up /sandbox, on Configure the sandboxed Bash tool.
the line in the docs

To see most of these paths resolved for your machine, run `/sandbox` and open the **Config** tab, which lists them under **Denied within allowed**, mixed in with your own `denyWrite` entries.

v2.1.305/sandbox Documentation arrivedAnthropic's documentation has since written up /sandbox, on Configure the sandboxed Bash tool.
the line in the docs

To see most of these paths resolved for your machine, run `/sandbox` and open the **Config** tab, which lists them under **Denied within allowed**, mixed in with your own `denyWrite` entries.

v2.1.302strictKnownMarketplaces Documentation arrivedAnthropic's documentation has since written up strictKnownMarketplaces, on Plugin loading reference.
the line in the docs

* **Marketplace sources restricted**: a [`strictKnownMarketplaces`](/docs/en/settings-reference#strictknownmarketplaces) allowlist without a `{ "source": "skills-dir" }` entry, or a [`blockedMarketplaces`](/docs/en/settings-reference#block…

v2.1.305--plugin-dir Documentation arrivedAnthropic's documentation has since written up --plugin-dir, on Plugin loading reference.
the line in the docs

For how to write `--plugin-dir` and skills-directory plugins, see [Create plugins](/docs/en/plugins/create).

v2.1.304claude mcp serve Documentation arrivedAnthropic's documentation has since written up claude mcp serve, on Connect Claude Code to tools via MCP.
the line in the docs

A `backgroundOutputPath` field in a Bash or PowerShell result from `claude mcp serve` means the call left its command running [in the background](/docs/en/tools-reference#background-commands). A command runs in the background when your cli…

v2.1.302claude mcp serve Documentation arrivedAnthropic's documentation has since written up claude mcp serve, on Connect Claude Code to tools via MCP.
the line in the docs

A `backgroundOutputPath` field in a Bash or PowerShell result from `claude mcp serve` means the call left its command running [in the background](/docs/en/tools-reference#background-commands). A command runs in the background when your cli…

v2.1.302claude mcp serve Documentation arrivedAnthropic's documentation has since written up claude mcp serve, on Connect Claude Code to tools via MCP.
the line in the docs

A `backgroundOutputPath` field in a Bash or PowerShell result from `claude mcp serve` means the call left its command running [in the background](/docs/en/tools-reference#background-commands). A command runs in the background when your cli…

v2.1.305acceptEdits Documentation arrivedAnthropic's documentation has since written up acceptEdits, on Connect Claude Code to tools via MCP.
the line in the docs

* **Tool set to `ask`**: Claude Code prompts on every call with the reason `Your organization requires approval for this tool`. The prompt appears even in `acceptEdits`, `auto`, and `bypassPermissions` [permission modes](/docs/en/permissio…

v2.1.305headersHelper Documentation arrivedAnthropic's documentation has since written up headersHelper, on Connect Claude Code to tools via MCP.
the line in the docs

* **A server whose [configuration](#mcp-installation-scopes) you can edit**: set it in [`headers`](#example-with-variable-expansion) or return it from a [`headersHelper`](#use-dynamic-headers-for-custom-authentication)

v2.1.305/config Documentation arrivedA small documentation edit on Use Claude Code in the cloud touched a line naming /config after this was published.
the line in the docs

* **`/config`**: in your browser at claude.ai/code, opens the Claude Code section of your settings instead of setting a value, and text after the command, including `key=value`, is ignored. To change a setting for a cloud session, set an […

v2.1.305claude auth login Documentation arrivedAnthropic's documentation has since written up claude auth login, on Authentication.
the line in the docs

* **Earlier sign-in**: you ran [`claude auth login`](/docs/en/cli-reference#cli-commands) in your shell before your first session, or you rebuilt a dev container that keeps your credentials in a [volume](/docs/en/devcontainer#persist-authe…

v2.1.305claude auth login Documentation arrivedAnthropic's documentation has since written up claude auth login, on Authentication.
the line in the docs

* **Earlier sign-in**: you ran [`claude auth login`](/docs/en/cli-reference#cli-commands) in your shell before your first session, or you rebuilt a dev container that keeps your credentials in a [volume](/docs/en/devcontainer#persist-authe…

v2.1.292--add-dir Documentation arrivedA small documentation edit on Error reference touched a line naming --add-dir after this was published.
the line in the docs

* On Windows, map the share to a drive letter and pass the drive at launch. In PowerShell, for example, run `net use Z: \\server\share` and then `claude --add-dir Z:\`.

v2.1.287--add-dir Documentation arrivedA small documentation edit on Error reference touched a line naming --add-dir after this was published.
the line in the docs

* On Windows, map the share to a drive letter and pass the drive at launch. In PowerShell, for example, run `net use Z: \\server\share` and then `claude --add-dir Z:\`.

v2.1.287--add-dir Documentation arrivedA small documentation edit on Error reference touched a line naming --add-dir after this was published.
the line in the docs

* On Windows, map the share to a drive letter and pass the drive at launch. In PowerShell, for example, run `net use Z: \\server\share` and then `claude --add-dir Z:\`.

v2.1.299CLAUDE_CODE_DISABLE_FILE_MENTIONS Documentation arrivedA small documentation edit on Common workflows touched a line naming CLAUDE_CODE_DISABLE_FILE_MENTIONS after this was published.
the line in the docs

To stop `@` references from including file contents and directory listings, set [`CLAUDE_CODE_DISABLE_FILE_MENTIONS`](/docs/en/env-vars#variables) to `1` in your shell or in the [`env` block](/docs/en/env-vars#set-variables-in-settings-fil…

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