Follow Discord
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
HomeReleasesWhat has changed since
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.

Events22,648dated, and never edited afterwards
Newestthe last time anything moved
Flag readings moved17,290a reading is one sample, for one account
Documentation arrived5,248a docs edit touched an entry's names
WhenEntryWhat happened
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.
v2.1.293tengu_violin_lapping Flag reading movedThe flag server now returns on for tengu_violin_lapping, 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.
v2.1.246tengu_ticklish_whisper Flag reading movedThe flag server now returns on for tengu_ticklish_whisper, 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_ochre_wren Flag reading movedThe flag server now returns on for tengu_ochre_wren, read as this account.
v2.1.239tengu_ochre_wren Flag reading movedThe flag server now returns on for tengu_ochre_wren, 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.
v2.1.232tengu_lapis_anchor Flag reading movedThe flag server now returns "padded-countdown" for tengu_lapis_anchor, 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.
v2.1.293haiku Documentation arrivedAnthropic's documentation has since written up haiku, on Model configuration.
the line in the docs

On the Anthropic API, the 1M context window uses standard model pricing with no premium for tokens beyond 200K, except on Haiku 5.5, which [costs more on prompts longer than 100K tokens](#haiku-5-5-context-window-and-pricing). For plans wh…
v2.1.293ANTHROPIC_DEFAULT_SONNET_MODEL Documentation arrivedAnthropic's documentation has since written up ANTHROPIC_DEFAULT_SONNET_MODEL, on Claude Code on Microsoft Foundry.
the line in the docs

Opus 4.6 and Sonnet 4.6 reach the 1M window when you append `[1m]` to the deployment name in `ANTHROPIC_DEFAULT_OPUS_MODEL` or `ANTHROPIC_DEFAULT_SONNET_MODEL`, as [Pin models for third-party deployments](/docs/en/model-config#pin-models-f…
v2.1.290--bare Documentation arrivedAnthropic's documentation has since written up --bare, on Configure server-managed settings.
the line in the docs

A session receives the managed settings of the organization that owns the credential it authenticates with. An API key from the [Claude Console](https://platform.claude.com) belongs to the Console organization it was created in, which is a…
v2.1.290--bare Documentation arrivedAnthropic's documentation has since written up --bare, on Configure server-managed settings.
the line in the docs

A session receives the managed settings of the organization that owns the credential it authenticates with. An API key from the [Claude Console](https://platform.claude.com) belongs to the Console organization it was created in, which is a…
v2.1.292tool.check Documentation arrivedAnthropic's documentation has since written up tool.check, on React to events with a mod.
the line in the docs

At `tool.check` and `plugin.register`, a refusal returned after `next` resolved still holds, so return it without testing `next.called`:
v2.1.292tool.check Documentation arrivedAnthropic's documentation has since written up tool.check, on React to events with a mod.
the line in the docs

At `tool.check` and `plugin.register`, a refusal returned after `next` resolved still holds, so return it without testing `next.called`:
v2.1.292CLAUDE_CODE_PRINT_BG_WAIT_CEILING_MS Documentation arrivedAnthropic's documentation has since written up CLAUDE_CODE_PRINT_BG_WAIT_CEILING_MS, on Run Claude Code programmatically.
the line in the docs

Unless a background command that the main conversation started is still running, Claude Code stops whatever is still running after 10 minutes of continuous idle waiting by default and drops its partial result. To change the 10-minute cap, …
v2.1.275CLAUDE_CODE_PRINT_BG_WAIT_CEILING_MS Documentation arrivedAnthropic's documentation has since written up CLAUDE_CODE_PRINT_BG_WAIT_CEILING_MS, on Run Claude Code programmatically.
the line in the docs

Unless a background command that the main conversation started is still running, Claude Code stops whatever is still running after 10 minutes of continuous idle waiting by default and drops its partial result. To change the 10-minute cap, …
v2.1.268CLAUDE_CODE_PRINT_BG_WAIT_CEILING_MS Documentation arrivedAnthropic's documentation has since written up CLAUDE_CODE_PRINT_BG_WAIT_CEILING_MS, on Run Claude Code programmatically.
the line in the docs

Unless a background command that the main conversation started is still running, Claude Code stops whatever is still running after 10 minutes of continuous idle waiting by default and drops its partial result. To change the 10-minute cap, …
v2.1.295tengu_violin_camber Gate removed from the codev2.1.295 removed the tengu_violin_camber gate from the code while it was still reading on for the account this site reads.
v2.1.292claude plugin Documentation arrivedA small documentation edit on Marketplace reference touched a line naming claude plugin after this was published.
the line in the docs

* **The download folder of a registered GitHub marketplace, `<owner>-<repo>`**: Claude Code downloads a marketplace added from a `github` source such as `acme/x-tools` through a folder named `acme-x-tools`, whatever that marketplace's own …
v2.1.290/run Documentation arrivedAnthropic's documentation has since written up /run, on Recipes.
the line in the docs

-v "$HOME/.config/mcp-inspector/secret-key:/run/secrets/mcp_inspector_secret_key:ro" \
v2.1.292timeout Documentation arrivedAnthropic's documentation has since written up timeout, on Authorization.
the line in the docs

| `--wait-for-auth <sec>` | Poll the state file until a token for `--server-url` appears, then inject it. Times out at `<sec>` with exit `3` (`auth_wait_timeout`). Use after handing a login off to a human. |
v2.1.290--print Documentation arrivedAnthropic's documentation has since written up --print, on Authorization.
the line in the docs

`--print-handoff` (below) prints a `portForwardCmd` for the web Inspector's
v2.1.287--print Documentation arrivedAnthropic's documentation has since written up --print, on Authorization.
the line in the docs

`--print-handoff` (below) prints a `portForwardCmd` for the web Inspector's
v2.1.286--print Documentation arrivedAnthropic's documentation has since written up --print, on Authorization.
the line in the docs

`--print-handoff` (below) prints a `portForwardCmd` for the web Inspector's
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.
v2.1.282tengu_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.
v2.1.223tengu_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.
v2.1.284gatewayInternalNetworks Documentation arrivedAnthropic's documentation has since written up gatewayInternalNetworks, on Claude apps gateway deployment and operations.
the line in the docs

* **Declared block**: if your internal network uses public IPv4 space your organization owns, list the block in the `gatewayInternalNetworks` managed setting. The gateway and the user's machine must both be in that block. See [Allow a gate…
v2.1.281gatewayInternalNetworks Documentation arrivedAnthropic's documentation has since written up gatewayInternalNetworks, on Claude apps gateway deployment and operations.
the line in the docs

* **Declared block**: if your internal network uses public IPv4 space your organization owns, list the block in the `gatewayInternalNetworks` managed setting. The gateway and the user's machine must both be in that block. See [Allow a gate…
Feedback