Sweep 19 Sep 2026 · 02:36Z Build v2.1.278 500 read Stable v2.1.267 Latest v2.1.278 Next v2.1.278 Feeds RSS JSON llms.txt Unofficial
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.

Events4,592dated, and never edited afterwards
Newestthe last time anything moved
WhenEntryWhat happened
v2.1.206 Flag reading movedThe flag server now returns off for tengu_umber_kestrel, read as this account. v2.1.239 Flag reading movedThe flag server now returns {"enabled":false,"version":0} for tengu_toasty_breeze, read as this account. v2.1.239 Flag reading movedThe flag server now returns {"enabled":false,"version":0} for tengu_toasty_breeze, read as this account. v2.1.248 Flag reading movedThe flag server now returns {"enabled":false,"version":0} for tengu_nifty_lemur, read as this account. v2.1.248 Flag reading movedThe flag server now returns {"enabled":false,"version":0} for tengu_nifty_lemur, read as this account. v2.1.223 Flag reading movedThe flag server now returns off for tengu_juniper_relay, read as this account. v2.1.251 Flag reading movedThe flag server now returns off for tengu_juniper_relay, read as this account. v2.1.206 Flag reading movedThe flag server now returns on for tengu_umber_kestrel, read as this account. v2.1.239 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. v2.1.239 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. v2.1.248 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. v2.1.248 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. v2.1.223 Flag reading movedThe flag server now returns on for tengu_juniper_relay, read as this account. v2.1.251 Flag reading movedThe flag server now returns on for tengu_juniper_relay, read as this account. v2.1.206 Flag reading movedThe flag server now returns off for tengu_umber_kestrel, read as this account. v2.1.239 Flag reading movedThe flag server now returns {"enabled":false,"version":0} for tengu_toasty_breeze, read as this account. v2.1.239 Flag reading movedThe flag server now returns {"enabled":false,"version":0} for tengu_toasty_breeze, read as this account. v2.1.248 Flag reading movedThe flag server now returns {"enabled":false,"version":0} for tengu_nifty_lemur, read as this account. v2.1.248 Flag reading movedThe flag server now returns {"enabled":false,"version":0} for tengu_nifty_lemur, read as this account. v2.1.223 Flag reading movedThe flag server now returns off for tengu_juniper_relay, read as this account. v2.1.251 Flag reading movedThe flag server now returns off for tengu_juniper_relay, read as this account. v2.1.206 Flag reading movedThe flag server now returns on for tengu_umber_kestrel, read as this account. v2.1.239 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. v2.1.239 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. v2.1.248 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. v2.1.248 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. v2.1.223 Flag reading movedThe flag server now returns on for tengu_juniper_relay, read as this account. v2.1.251 Flag reading movedThe flag server now returns on for tengu_juniper_relay, read as this account. v2.1.206 Flag reading movedThe flag server now returns off for tengu_umber_kestrel, read as this account. v2.1.239 Flag reading movedThe flag server now returns {"enabled":false,"version":0} for tengu_toasty_breeze, read as this account. v2.1.239 Flag reading movedThe flag server now returns {"enabled":false,"version":0} for tengu_toasty_breeze, read as this account. v2.1.248 Flag reading movedThe flag server now returns {"enabled":false,"version":0} for tengu_nifty_lemur, read as this account. v2.1.248 Flag reading movedThe flag server now returns {"enabled":false,"version":0} for tengu_nifty_lemur, read as this account. v2.1.223 Flag reading movedThe flag server now returns off for tengu_juniper_relay, read as this account. v2.1.251 Flag reading movedThe flag server now returns off for tengu_juniper_relay, read as this account. v2.1.275 Documentation arrivedAnthropic's documentation has since written up maxTokens, on preserved-thinking. v2.1.206 Flag reading movedThe flag server now returns on for tengu_umber_kestrel, read as this account. v2.1.239 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. v2.1.239 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. v2.1.248 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. v2.1.248 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. v2.1.223 Flag reading movedThe flag server now returns on for tengu_juniper_relay, read as this account. v2.1.251 Flag reading movedThe flag server now returns on for tengu_juniper_relay, read as this account. v2.1.206 Flag reading movedThe flag server now returns off for tengu_umber_kestrel, read as this account. v2.1.239 Flag reading movedThe flag server now returns {"enabled":false,"version":0} for tengu_toasty_breeze, read as this account. v2.1.239 Flag reading movedThe flag server now returns {"enabled":false,"version":0} for tengu_toasty_breeze, read as this account. v2.1.248 Flag reading movedThe flag server now returns {"enabled":false,"version":0} for tengu_nifty_lemur, read as this account. v2.1.248 Flag reading movedThe flag server now returns {"enabled":false,"version":0} for tengu_nifty_lemur, read as this account. v2.1.223 Flag reading movedThe flag server now returns off for tengu_juniper_relay, read as this account. v2.1.251 Flag reading movedThe flag server now returns off for tengu_juniper_relay, read as this account. v2.1.268 Documentation arrivedA small documentation edit on Run Claude Code programmatically touched a line naming tool_use_id after this was published. v2.1.277 Documentation arrivedA small documentation edit on Run Claude Code programmatically touched a line naming /cost after this was published. v2.1.242 Documentation arrivedA small documentation edit on Run Claude Code programmatically touched a line naming --output-format after this was published. v2.1.277 Documentation arrivedA small documentation edit on Extend Claude Code touched a line naming claude-md after this was published. v2.1.246 Documentation arrivedA small documentation edit on Manage costs effectively touched a line naming --max-budget-usd after this was published. v2.1.275 Documentation arrivedA small documentation edit on Manage costs effectively touched a line naming /status after this was published. v2.1.273 Documentation arrivedA small documentation edit on Manage costs effectively touched a line naming /status after this was published. v2.1.273 Documentation arrivedA small documentation edit on Manage costs effectively touched a line naming /status after this was published. v2.1.269 Documentation arrivedAnthropic's documentation has since written up viewMode, on CLI reference. v2.1.267 Documentation arrivedAnthropic's documentation has since written up claude remote-control, on CLI reference. v2.1.265 Documentation arrivedAnthropic's documentation has since written up claude remote-control, on CLI reference. v2.1.275 Documentation arrivedAnthropic's documentation has since written up --remote, on CLI reference. v2.1.248 Documentation arrivedAnthropic's documentation has since written up --ref, on CLI reference. v2.1.273 Documentation arrivedAnthropic's documentation has since written up --no-chrome, on CLI reference. v2.1.273 Documentation arrivedAnthropic's documentation has since written up --no-chrome, on CLI reference. v2.1.277 Documentation arrivedAnthropic's documentation has since written up /mcp, on CLI reference. v2.1.246 Documentation arrivedAnthropic's documentation has since written up --max-budget-usd, on CLI reference. v2.1.278 Documentation arrivedAnthropic's documentation has since written up --verbose, on CLI reference. v2.1.278 Documentation arrivedAnthropic's documentation has since written up --verbose, on CLI reference. v2.1.265 Documentation arrivedAnthropic's documentation has since written up --fallback-model, on CLI reference. v2.1.257 Documentation arrivedAnthropic's documentation has since written up claude -p --continue, on CLI reference. v2.1.277 Documentation arrivedAnthropic's documentation has since written up /loop, on CLI reference. v2.1.273 Documentation arrivedAnthropic's documentation has since written up --chrome, on CLI reference. v2.1.273 Documentation arrivedAnthropic's documentation has since written up --chrome, on CLI reference. v2.1.273 Documentation arrivedAnthropic's documentation has since written up --chrome, on CLI reference. v2.1.273 Documentation arrivedAnthropic's documentation has since written up --chrome, on CLI reference. v2.1.251 Documentation arrivedAnthropic's documentation has since written up --background, on CLI reference. v2.1.277 Documentation arrivedAnthropic's documentation has since written up --tools, on CLI reference. v2.1.273 Documentation arrivedAnthropic's documentation has since written up --tools, on CLI reference. v2.1.257 Documentation arrivedAnthropic's documentation has since written up advisorModel, on CLI reference. v2.1.257 Documentation arrivedAnthropic's documentation has since written up advisorModel, on CLI reference. v2.1.277 Documentation arrivedAnthropic's documentation has since written up pasted_content, on Agent SDK reference - TypeScript. v2.1.275 Documentation arrivedAnthropic's documentation has since written up autoAllowBashIfSandboxed, on Agent SDK reference - Python. v2.1.277 Documentation arrivedA small documentation edit on Configure your agent touched a line naming effortLevel after this was published. v2.1.257 Documentation arrivedA small documentation edit on Configure your agent touched a line naming localSettings after this was published. v2.1.257 Documentation arrivedA small documentation edit on Configure your agent touched a line naming updateSettings after this was published. v2.1.206 Flag reading movedThe flag server now returns on for tengu_umber_kestrel, read as this account. v2.1.239 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. v2.1.239 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. v2.1.248 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. v2.1.248 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. v2.1.223 Flag reading movedThe flag server now returns on for tengu_juniper_relay, read as this account. v2.1.251 Flag reading movedThe flag server now returns on for tengu_juniper_relay, read as this account. v2.1.265 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. v2.1.277 Documentation arrivedAnthropic's documentation has since written up claude-md, on Use Claude Code in VS Code. v2.1.271 Documentation arrivedA small documentation edit on Create custom subagents touched a line naming breakdown after this was published. v2.1.251 Documentation arrivedAnthropic's documentation has since written up includeGitInstructions, on All settings. v2.1.277 Documentation arrivedA small documentation edit on How Claude remembers your project touched a line naming CLAUDE.md after this was published. v2.1.277 Documentation arrivedA small documentation edit on How Claude remembers your project touched a line naming CLAUDE.md after this was published. v2.1.277 Documentation arrivedA small documentation edit on Hooks reference touched a line naming pasted_content after this was published. v2.1.247 Documentation arrivedA small documentation edit on Hooks reference touched a line naming UserPromptSubmit after this was published. v2.1.260 Documentation arrivedAnthropic's documentation has since written up --fork-session, on Error reference. v2.1.275 Documentation arrivedAnthropic's documentation has since written up /plugin marketplace remove, on Error reference. v2.1.275 Documentation arrivedAnthropic's documentation has since written up /plugin install, on Error reference. v2.1.275 Documentation arrivedAnthropic's documentation has since written up /plugin install, on Error reference. v2.1.275 Documentation arrivedAnthropic's documentation has since written up /plugin install, on Error reference. v2.1.275 Documentation arrivedAnthropic's documentation has since written up /plugin install, on Error reference. v2.1.275 Documentation arrivedAnthropic's documentation has since written up remedy, on Error reference. v2.1.274 Documentation arrivedAnthropic's documentation has since written up /usage-credits, on Error reference. v2.1.275 Documentation arrivedAnthropic's documentation has since written up otelHeadersHelper, on Error reference. v2.1.251 Documentation arrivedA small documentation edit on Environment variables touched a line naming includeGitInstructions after this was published. v2.1.251 Documentation arrivedA small documentation edit on Environment variables touched a line naming CLAUDE_CODE_DISABLE_GIT_INSTRUCTIONS after this was published. v2.1.277 Documentation arrivedA small documentation edit on Discover and install prebuilt plugins through marketplaces touched a line naming claude plugin marketplace add after this was published. v2.1.261 Documentation arrivedA small documentation edit on Discover and install prebuilt plugins through marketplaces touched a line naming --claudeai after this was published. v2.1.246 Documentation arrivedA small documentation edit on Use Claude Code in VS Code touched a line naming .gitignore after this was published. v2.1.273 Documentation arrivedA small documentation edit on Commands touched a line naming /update after this was published. v2.1.247 Documentation arrivedAnthropic's documentation has since written up git worktree add, on Run parallel sessions with worktrees. v2.1.247 Documentation arrivedAnthropic's documentation has since written up git worktree add, on Run parallel sessions with worktrees. v2.1.251 Documentation arrivedAnthropic's documentation has since written up CLAUDE_CODE_SUBAGENT_MODEL, on Create custom subagents. v2.1.248 Documentation arrivedA small documentation edit on Customize your status line touched a line naming duration_ms after this was published.