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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.

Events22,566dated, and never edited afterwards
Newestthe last time anything moved
Flag readings moved17,208a reading is one sample, for one account
Documentation arrived5,248a docs edit touched an entry's names
WhenEntryWhat happened
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.
v2.1.286/fast Documentation arrivedA small documentation edit on Claude Tag for Claude Code users touched a line naming /fast after this was published.
the line in the docs

| `/fast` | Once an Owner [allows fast mode](/docs/claude-tag/admins/customize#allow-fast-mode), you [turn it on for one thread](/docs/claude-tag/users/models#run-a-thread-in-fast-mode) with `@Claude !fast` |

v2.1.286/model Documentation arrivedA small documentation edit on Claude Tag for Claude Code users touched a line naming /model after this was published.
the line in the docs

| `/fast` | Once an Owner [allows fast mode](/docs/claude-tag/admins/customize#allow-fast-mode), you [turn it on for one thread](/docs/claude-tag/users/models#run-a-thread-in-fast-mode) with `@Claude !fast` |

v2.1.286/fast Documentation arrivedAnthropic's documentation has since written up /fast, on Customize Claude Tag.
the line in the docs

* **Cost**: a channel thread in fast mode bills to your organization like other [channel work](/docs/claude-tag/admins/set-spend-limit#how-claude-tag-usage-is-billed), at the [fast mode rates](https://code.claude.com/docs/en/fast-mode#unde…

v2.1.286cc-plugin-you-should-know Documentation arrivedA small documentation edit on Mods overview touched a line naming cc-plugin-you-should-know after this was published.
the line in the docs

| `cc-plugin-you-should-know` | Runs a side agent that watches your back while Claude works on longer tasks. When it finds something worth knowing that you might miss, it shows you a note above the prompt. | Disabled by default. Listed in …

v2.1.286cc-plugin-you-should-know Documentation arrivedA small documentation edit on Mods overview touched a line naming cc-plugin-you-should-know after this was published.
the line in the docs

| `cc-plugin-you-should-know` | Runs a side agent that watches your back while Claude works on longer tasks. When it finds something worth knowing that you might miss, it shows you a note above the prompt. | Disabled by default. Listed in …

v2.1.285alwaysLoad Documentation arrivedAnthropic's documentation has since written up alwaysLoad, on Claude Code changelog.
the line in the docs

* Changed MCP server `alwaysLoad: false` to defer all of that server's tools behind tool search

v2.1.286claude remote-control Documentation arrivedAnthropic's documentation has since written up claude remote-control, on Claude Code changelog.
the line in the docs

* Fixed `claude remote-control` failing to register behind an HTTP proxy with a misleading "Check your organization permissions" error (anthropics/claude-code#97352)

v2.1.286/ultrareview Documentation arrivedAnthropic's documentation has since written up /ultrareview, on Claude Code changelog.
the line in the docs

* Fixed `/ultrareview` giving advice about `.git/info/attributes` when the upload stops on a committed `.gitattributes` it cannot read, such as one saved as UTF-16

v2.1.286/ultrareview Documentation arrivedAnthropic's documentation has since written up /ultrareview, on Claude Code changelog.
the line in the docs

* Fixed `/ultrareview` giving advice about `.git/info/attributes` when the upload stops on a committed `.gitattributes` it cannot read, such as one saved as UTF-16

v2.1.286/ultrareview Documentation arrivedAnthropic's documentation has since written up /ultrareview, on Claude Code changelog.
the line in the docs

* Fixed `/ultrareview` giving advice about `.git/info/attributes` when the upload stops on a committed `.gitattributes` it cannot read, such as one saved as UTF-16

v2.1.286/ultrareview Documentation arrivedAnthropic's documentation has since written up /ultrareview, on Claude Code changelog.
the line in the docs

* Fixed `/ultrareview` giving advice about `.git/info/attributes` when the upload stops on a committed `.gitattributes` it cannot read, such as one saved as UTF-16

v2.1.286/rewind Documentation arrivedAnthropic's documentation has since written up /rewind, on Claude Code changelog.
the line in the docs

* Fixed screen reader mode refusing Enter with nothing typed on /rewind's summarize options, whose added context is optional

v2.1.277__proto__ Documentation arrivedAnthropic's documentation has since written up __proto__, on Claude Code changelog.
the line in the docs

* Fixed organization per-tool permission ceilings being silently dropped for an MCP tool named `__proto__`

v2.1.284opusplan Documentation arrivedAnthropic's documentation has since written up opusplan, on Claude Code changelog.
the line in the docs

* Fixed switching between Opus 5.5 and Sonnet 5.5 (`/model`, `opusplan`) rewriting earlier MCP tool announcements, which could drop earlier extended thinking

v2.1.286/model Documentation arrivedAnthropic's documentation has since written up /model, on Claude Code changelog.
the line in the docs

* Fixed Bedrock and Vertex startup model checks ignoring an enforced `availableModels` list, which could collapse `/model` to one Opus row

v2.1.281bareElicitationCapability Documentation arrivedAnthropic's documentation has since written up bareElicitationCapability, on Claude Code changelog.
the line in the docs

* Added URL prompts from MCP servers on the 2025-11-25 protocol, for example to sign in. If a server no longer connects after this update, add "bareElicitationCapability": true to its MCP config entry

v2.1.281bareElicitationCapability Documentation arrivedAnthropic's documentation has since written up bareElicitationCapability, on Claude Code changelog.
the line in the docs

* Added URL prompts from MCP servers on the 2025-11-25 protocol, for example to sign in. If a server no longer connects after this update, add "bareElicitationCapability": true to its MCP config entry

v2.1.286cc-plugin-you-should-know Documentation arrivedAnthropic's documentation has since written up cc-plugin-you-should-know, on Claude Code changelog.
the line in the docs

* Added You should know, an opt-in plugin where a side agent watches your back and flags things you or Claude might miss. Turn it on with `/plugin enable cc-plugin-you-should-know@builtin` (for first-party sessions with telemetry on)

v2.1.286cc-plugin-you-should-know Documentation arrivedAnthropic's documentation has since written up cc-plugin-you-should-know, on Claude Code changelog.
the line in the docs

* Added You should know, an opt-in plugin where a side agent watches your back and flags things you or Claude might miss. Turn it on with `/plugin enable cc-plugin-you-should-know@builtin` (for first-party sessions with telemetry on)

v2.1.247tengu_plugin_hooks_modules Flag reading movedThe flag server now returns on for tengu_plugin_hooks_modules, read as this account.
v2.1.247tengu_plugin_hooks_modules Flag reading movedThe flag server now returns on for tengu_plugin_hooks_modules, read as this account.
v2.1.246tengu_plugin_hooks_modules Flag reading movedThe flag server now returns on for tengu_plugin_hooks_modules, read as this account.
v2.1.242tengu_plugin_hooks_modules Flag reading movedThe flag server now returns on for tengu_plugin_hooks_modules, read as this account.
v2.1.242tengu_plugin_hooks_modules Flag reading movedThe flag server now returns on for tengu_plugin_hooks_modules, read as this account.
v2.1.242tengu_plugin_hooks_modules Flag reading movedThe flag server now returns on for tengu_plugin_hooks_modules, read as this account.
v2.1.242tengu_plugin_hooks_modules Flag reading movedThe flag server now returns on for tengu_plugin_hooks_modules, read as this account.
v2.1.242tengu_plugin_hooks_modules Flag reading movedThe flag server now returns on for tengu_plugin_hooks_modules, read as this account.
v2.1.242tengu_plugin_hooks_modules Flag reading movedThe flag server now returns on for tengu_plugin_hooks_modules, read as this account.
v2.1.242tengu_plugin_hooks_modules Flag reading movedThe flag server now returns on for tengu_plugin_hooks_modules, read as this account.
v2.1.283tengu_plugin_hooks_modules Flag reading movedThe flag server now returns on for tengu_plugin_hooks_modules, read as this account.
v2.1.283tengu_plugin_hooks_modules Flag reading movedThe flag server now returns on for tengu_plugin_hooks_modules, read as this account.
v2.1.280tengu_plugin_hooks_modules Flag reading movedThe flag server now returns on for tengu_plugin_hooks_modules, read as this account.
v2.1.275tengu_plugin_hooks_modules Flag reading movedThe flag server now returns on for tengu_plugin_hooks_modules, read as this account.
v2.1.275tengu_plugin_hooks_modules Flag reading movedThe flag server now returns on for tengu_plugin_hooks_modules, read as this account.
v2.1.259tengu_plugin_hooks_modules Flag reading movedThe flag server now returns on for tengu_plugin_hooks_modules, read as this account.
v2.1.287tengu_encapsulated_pebble Flag reading movedThe flag server now returns on for tengu_encapsulated_pebble, read as this account.
v2.1.284tengu_drifting_reef Flag reading movedThe flag server now returns {"browserClicks":true,"browserSummary":true,"computerUseChecks":true,"computerUseSummary":true} for tengu_drifting_reef, read as this account.
v2.1.284tengu_drifting_reef Flag reading movedThe flag server now returns {"browserClicks":true,"browserSummary":true,"computerUseChecks":true,"computerUseSummary":true} for tengu_drifting_reef, read as this account.
v2.1.284tengu_drifting_reef Flag reading movedThe flag server now returns {"browserClicks":true,"browserSummary":true,"computerUseChecks":true,"computerUseSummary":true} for tengu_drifting_reef, read as this account.
v2.1.287tengu_buzzing_pike Flag reading movedThe flag server now returns null for tengu_buzzing_pike, read as this account.
v2.1.286extraKnownMarketplaces Documentation arrivedAnthropic's documentation has since written up extraKnownMarketplaces, on All settings.
the line in the docs

"extraKnownMarketplaces": {

v2.1.286managed-settings.json Documentation arrivedAnthropic's documentation has since written up managed-settings.json, on All settings.
the line in the docs

```json managed-settings.json theme={null}

v2.1.268sec-default@builtin Documentation arrivedAnthropic's documentation has since written up sec-default@builtin, on All settings.
the line in the docs

List the managed plugins whose [mods](/docs/en/plugins/mods/overview) run before every mod a user installs, in the listed order. When you set this key in managed settings, name `sec-default@builtin` in the list to keep the built-in guard. …

v2.1.268prependPlugins Documentation arrivedAnthropic's documentation has since written up prependPlugins, on All settings.
the line in the docs

| [`prependPlugins`](#prependplugins) | Run your organization's [mods](/docs/en/plugins/mods/admin) before every mod a user installs | Plugins and skills | User or managed |

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