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.
| When | Entry | What happened |
|---|---|---|
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. | |
v2.1.223tengu_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. | |
v2.1.269tengu_lilac_dune |
Flag reading movedThe flag server now returns on for tengu_lilac_dune, read as this account. | |
v2.1.260proactive |
Documentation arrivedAnthropic's documentation has since written up proactive, on Output styles.
the line in the docs| [Proactive](#proactive) | Claude starts work right away and makes reasonable assumptions rather than asking about routine decisions | You want Claude to keep working through routine decisions, and you'll correct course if an assumption i… |
|
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. | |
v2.1.248tengu_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. | |
v2.1.223tengu_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. | |
v2.1.206tengu_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. | |
v2.1.248tengu_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. | |
v2.1.223tengu_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. | |
v2.1.187tengu_startup_announcements |
Flag reading movedThe flag server now returns [{"accentBar":false,"id":"opus-5-5-launch","maxImpressions":10,"priority":0,"requiresModel":"claude-opus-5-5","text":"Get to finished work sooner with Opus 5.5. Switch anytime with `/model`."}] for tengu_startup_announcements, read as this account. | |
v2.1.277claude plugin validate |
Documentation arrivedAnthropic's documentation has since written up claude plugin validate, on Plugins reference.
the line in the docsIf you break any of these rules, the plugin fails to load. Run `claude plugin validate` to see which field breaks which rule. |
|
v2.1.271omitClaudeMd |
Documentation arrivedAnthropic's documentation has since written up omitClaudeMd, on Explore the .claude directory.
the line in the docs| `agents/*.md` | `name`, `description`, `tools`, `disallowedTools`, `model`, `permissionMode`, `maxTurns`, `skills`, `mcpServers`, `hooks`, `memory`, `background`, `effort`, `isolation`, `color`, `initialPrompt`, `omitClaudeMd`, `experime… |
|
v2.1.271omitClaudeMd |
Documentation arrivedAnthropic's documentation has since written up omitClaudeMd, on Explore the .claude directory.
the line in the docs| `agents/*.md` | `name`, `description`, `tools`, `disallowedTools`, `model`, `permissionMode`, `maxTurns`, `skills`, `mcpServers`, `hooks`, `memory`, `background`, `effort`, `isolation`, `color`, `initialPrompt`, `omitClaudeMd`, `experime… |
|
v2.1.271omitClaudeMd |
Documentation arrivedAnthropic's documentation has since written up omitClaudeMd, on Explore the .claude directory.
the line in the docs| `agents/*.md` | `name`, `description`, `tools`, `disallowedTools`, `model`, `permissionMode`, `maxTurns`, `skills`, `mcpServers`, `hooks`, `memory`, `background`, `effort`, `isolation`, `color`, `initialPrompt`, `omitClaudeMd`, `experime… |
|
v2.1.267CLAUDE_CODE_CHILD_SESSION |
Documentation arrivedAnthropic's documentation has since written up CLAUDE_CODE_CHILD_SESSION, on Agent SDK reference - TypeScript.
the line in the docsIf your application runs prompts on its own schedule, declare each run so Claude Code frames the turn to the model as a scheduled task rather than as live input from the user. Start the session with `CLAUDE_CODE_HOST_SCHEDULED_RUN` set to … |
|
v2.1.278ANTHROPIC_BASE_URL |
Documentation arrivedA small documentation edit on Escalate hard decisions with the advisor tool touched a line naming ANTHROPIC_BASE_URL after this was published.
the line in the docs* **Anthropic API only**: the advisor is a server-executed tool. It is not available on Amazon Bedrock, Claude Platform on AWS, Google Cloud's Agent Platform, or Microsoft Foundry. Through an [LLM gateway](/docs/en/llm-gateway) configured … |
|
v2.1.277ANTHROPIC_BASE_URL |
Documentation arrivedA small documentation edit on Escalate hard decisions with the advisor tool touched a line naming ANTHROPIC_BASE_URL after this was published.
the line in the docs* **Anthropic API only**: the advisor is a server-executed tool. It is not available on Amazon Bedrock, Claude Platform on AWS, Google Cloud's Agent Platform, or Microsoft Foundry. Through an [LLM gateway](/docs/en/llm-gateway) configured … |
|
v2.1.238tengu_violin_strad |
Flag reading movedThe flag server now returns on for tengu_violin_strad, read as this account. | |
v2.1.280tengu_violin_scroll |
Flag reading movedThe flag server now returns on for tengu_violin_scroll, read as this account. | |
v2.1.277tengu_violin_bridgepin |
Flag reading movedThe flag server now returns on for tengu_violin_bridgepin, read as this account. | |
v2.1.277tengu_violin_bridgepin |
Flag reading movedThe flag server now returns on for tengu_violin_bridgepin, read as this account. | |
v2.1.277tengu_violin_bridgepin |
Flag reading movedThe flag server now returns on for tengu_violin_bridgepin, read as this account. | |
v2.1.277tengu_violin_bridgepin |
Flag reading movedThe flag server now returns on for tengu_violin_bridgepin, read as this account. | |
v2.1.277tengu_violin_bridgepin |
Flag reading movedThe flag server now returns on for tengu_violin_bridgepin, read as this account. | |
v2.1.277tengu_violin_bridgepin |
Flag reading movedThe flag server now returns on for tengu_violin_bridgepin, read as this account. | |
v2.1.248tengu_violin_amati |
Flag reading movedThe flag server now returns on for tengu_violin_amati, read as this account. | |
v2.1.242tengu_violin_amati |
Flag reading movedThe flag server now returns on for tengu_violin_amati, read as this account. | |
v2.1.239tengu_violin_amati |
Flag reading movedThe flag server now returns on for tengu_violin_amati, read as this account. | |
v2.1.239tengu_violin_amati |
Flag reading movedThe flag server now returns on for tengu_violin_amati, read as this account. | |
v2.1.239tengu_violin_amati |
Flag reading movedThe flag server now returns on for tengu_violin_amati, read as this account. | |
v2.1.187tengu_startup_announcements |
Flag reading movedThe flag server now returns [{"accentBar":false,"id":"opus-5-5-launch","maxImpressions":3,"priority":0,"requiresModel":"claude-opus-5-5","text":"Get to finished work sooner with Opus 5.5. Switch anytime with `/model`."}] for tengu_startup_announcements, read as this account. | |
v2.1.267SubagentHandback |
Documentation arrivedA small documentation edit on Create custom subagents touched a line naming SubagentHandback after this was published.
the line in the docsThe second filter applies to subagents running in the background. Apart from `Agent` and `ExitPlanMode`, which follow the first filter's conditions wherever the subagent runs, a background subagent keeps every MCP tool but only these built… |
|
v2.1.267SubagentHandback |
Documentation arrivedA small documentation edit on Create custom subagents touched a line naming SubagentHandback after this was published.
the line in the docsThe second filter applies to subagents running in the background. Apart from `Agent` and `ExitPlanMode`, which follow the first filter's conditions wherever the subagent runs, a background subagent keeps every MCP tool but only these built… |
|
v2.1.265NotebookEdit |
Documentation arrivedA small documentation edit on Create custom subagents touched a line naming NotebookEdit after this was published.
the line in the docsThe second filter applies to subagents running in the background. Apart from `Agent` and `ExitPlanMode`, which follow the first filter's conditions wherever the subagent runs, a background subagent keeps every MCP tool but only these built… |
|
v2.1.265ExitPlanMode |
Documentation arrivedA small documentation edit on Create custom subagents touched a line naming ExitPlanMode after this was published.
the line in the docsThe second filter applies to subagents running in the background. Apart from `Agent` and `ExitPlanMode`, which follow the first filter's conditions wherever the subagent runs, a background subagent keeps every MCP tool but only these built… |
|
v2.1.259ExitPlanMode |
Documentation arrivedA small documentation edit on Create custom subagents touched a line naming ExitPlanMode after this was published.
the line in the docsThe second filter applies to subagents running in the background. Apart from `Agent` and `ExitPlanMode`, which follow the first filter's conditions wherever the subagent runs, a background subagent keeps every MCP tool but only these built… |
|
v2.1.257ToolSearch |
Documentation arrivedA small documentation edit on Create custom subagents touched a line naming ToolSearch after this was published.
the line in the docsThe second filter applies to subagents running in the background. Apart from `Agent` and `ExitPlanMode`, which follow the first filter's conditions wherever the subagent runs, a background subagent keeps every MCP tool but only these built… |
|
v2.1.268SendMessage |
Documentation arrivedA small documentation edit on Create custom subagents touched a line naming SendMessage after this was published.
the line in the docsThe second filter applies to subagents running in the background. Apart from `Agent` and `ExitPlanMode`, which follow the first filter's conditions wherever the subagent runs, a background subagent keeps every MCP tool but only these built… |
|
v2.1.268SendMessage |
Documentation arrivedA small documentation edit on Create custom subagents touched a line naming SendMessage after this was published.
the line in the docsThe second filter applies to subagents running in the background. Apart from `Agent` and `ExitPlanMode`, which follow the first filter's conditions wherever the subagent runs, a background subagent keeps every MCP tool but only these built… |