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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.

Events22,638dated, and never edited afterwards
Newestthe last time anything moved
Flag readings moved17,280a reading is one sample, for one account
Documentation arrived5,248a docs edit touched an entry's names
WhenEntryWhat happened
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.
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.
v2.1.284tengu_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.
v2.1.251tengu_juniper_relay Flag reading movedThe flag server now returns on for tengu_juniper_relay, 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.
v2.1.299tengu_glowing_lark Flag reading movedThe flag server now returns on for tengu_glowing_lark, read as this account.
v2.1.299tengu_glowing_lark Flag reading movedThe flag server now returns on for tengu_glowing_lark, 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.
v2.1.309--transport Documentation arrivedAnthropic's documentation has since written up --transport, on Best practices for Claude Code.
the line in the docs

claude mcp add --transport http notion https://mcp.notion.com/mcp
v2.1.310sonnet Documentation arrivedAnthropic's documentation has since written up sonnet, on migration-guide.
the line in the docs

/claude-api migrate this project to claude-sonnet-5-5
v2.1.310haiku Documentation arrivedAnthropic's documentation has since written up haiku, on migration-guide.
the line in the docs

/claude-api migrate this project to claude-haiku-5-5
v2.1.310fable Documentation arrivedAnthropic's documentation has since written up fable, on Or, for Claude Mythos 5.1, which offers the same capabilities to verified organizations:.
the line in the docs

/claude-api migrate this project to claude-fable-5-1
v2.1.310/claude-api Documentation arrivedAnthropic's documentation has since written up /claude-api, on claude-in-amazon-bedrock.
the line in the docs

/claude-api migrate this project to the latest Claude Opus model
v2.1.310/claude-api Documentation arrivedAnthropic's documentation has since written up /claude-api, on claude-in-amazon-bedrock.
the line in the docs

/claude-api migrate this project to the latest Claude Opus model
v2.1.310/claude-api Documentation arrivedAnthropic's documentation has since written up /claude-api, on claude-in-amazon-bedrock.
the line in the docs

/claude-api migrate this project to the latest Claude Opus model
v2.1.310/tasks Documentation arrivedAnthropic's documentation has since written up /tasks, on Extension Support Matrix.
the line in the docs

| Client | [MCP Apps](https://modelcontextprotocol.io/extensions/apps/overview.md) | [OAuth Client Credentials](https://modelcontextprotocol.io/extensions/auth/oauth-client-credentials.md) | [Enterprise Auth](https://modelcontextprotocol.i…
v2.1.310/model Documentation arrivedAnthropic's documentation has since written up /model, on Extension Support Matrix.
the line in the docs

| Client | [MCP Apps](https://modelcontextprotocol.io/extensions/apps/overview.md) | [OAuth Client Credentials](https://modelcontextprotocol.io/extensions/auth/oauth-client-credentials.md) | [Enterprise Auth](https://modelcontextprotocol.i…
v2.1.310CLAUDE_CODE_RETRY_WATCHDOG Documentation arrivedAnthropic's documentation has since written up CLAUDE_CODE_RETRY_WATCHDOG, on Claude Code changelog.
the line in the docs

* Fixed Claude Code retrying requests the API marked not to retry, which could hold a turn for minutes or, in unattended retry mode (`CLAUDE_CODE_RETRY_WATCHDOG`), indefinitely
v2.1.309/rewind Documentation arrivedAnthropic's documentation has since written up /rewind, on Claude Code changelog.
the line in the docs

* Fixed the /rewind confirmation saying the conversation "will be forked" when the later messages are removed from the conversation
v2.1.309--session-id Documentation arrivedAnthropic's documentation has since written up --session-id, on Claude Code changelog.
the line in the docs

* Fixed agent teams sessions showing an empty task list when coming back with `--resume`, `--continue`, `/resume` or `--session-id`, including after `/clear` or a crash, and `/branch` writing to the original session's list
v2.1.309--continue Documentation arrivedAnthropic's documentation has since written up --continue, on Claude Code changelog.
the line in the docs

* Fixed agent teams sessions showing an empty task list when coming back with `--resume`, `--continue`, `/resume` or `--session-id`, including after `/clear` or a crash, and `/branch` writing to the original session's list
v2.1.309/clear Documentation arrivedAnthropic's documentation has since written up /clear, on Claude Code changelog.
the line in the docs

* Fixed agent teams sessions showing an empty task list when coming back with `--resume`, `--continue`, `/resume` or `--session-id`, including after `/clear` or a crash, and `/branch` writing to the original session's list
v2.1.310opus Documentation arrivedAnthropic's documentation has since written up opus, on Claude Code changelog.
the line in the docs

* Improved startup time for launches whose only arguments are options and their values, such as `claude --model opus`
v2.1.310/teleport Documentation arrivedAnthropic's documentation has since written up /teleport, on Claude Code changelog.
the line in the docs

* Improved `/teleport` and `claude --teleport` to warn when a compacted cloud session loads from its last compaction, so the messages it summarized aren't in the local copy
v2.1.311tengu_wobbly_petal Flag reading movedThe flag server now returns null for tengu_wobbly_petal, 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.
v2.1.282tengu_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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