What
A server-controlled system for showing one-time startup messages to users — for example, announcing a new feature or a policy change.
Status
Feature-flagged (gated by tengu_startup_announcements)
Details
- Announcements are fetched from the server as the value of the
tengu_startup_announcementsfeature flag — the flag carries the announcement payload, not just an on/off gate - Each announcement has
id, optionaltitle,text,priority, andmaxImpressionsfields - Claude Code tracks how many times each announcement has been shown (
announcementImpressionsin config) and stops showing it oncemaxImpressionsis reached; multiple announcements can be queued and the highest-priority un-maxed one is selected - Rendered as a named UI component (
startup-announcement) that appears before the session prompt, not inline during a session - Slash-command references in the text are syntax-highlighted
- Model requirements can be attached to an announcement, restricting which sessions see it
Evidence
New announcement component (gated on tengu_startup_announcements flag, search for "startup-announcement")
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
Feature flag
tengu_startup_announcements Not enough to sayNothing here resolved what this flag was doing on this version, so nothing here should be read as on or off.
This account: no value returned · anonymous baseline: no value returned · compiled default in v2.1.187: not a boolean we can read
These values were read against a different version of Claude Code, so treat them as the nearest reading available instead of one taken on this release.
Read once, for one account on one subscription tier, against v2.1.187. It isn't a statement about your account. What a flag value here can and cannot tell you
Flag reading moved
The 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.
A reading is one sample. Claude Code evaluates its flags remotely, so no client sees the targeting rule behind a value and this says nothing about your account.
Flag reading moved
The flag server now returns [] for tengu_startup_announcements, read as this account.
A reading is one sample. Claude Code evaluates its flags remotely, so no client sees the targeting rule behind a value and this says nothing about your account.
Flag reading moved
The 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.
A reading is one sample. Claude Code evaluates its flags remotely, so no client sees the targeting rule behind a value and this says nothing about your account.
Flag reading moved
The 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`."},{"accentBar":true,"id":"anthropic-interviewer-2026-09-public","maxImpressions":6,"priority":-2,"text":"Take 15 min to share your experiences with Anthropic Interviewer. [Start now](https://clau.de/yourthoughts)","title":"Your voice can help guide AI"}] for tengu_startup_announcements, read as this account.
A reading is one sample. Claude Code evaluates its flags remotely, so no client sees the targeting rule behind a value and this says nothing about your account.
Flag reading moved
The 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`."},{"accentBar":true,"id":"anthropic-interviewer-2026-09-public","maxImpressions":6,"priority":-2,"text":"Take 15 min to share your experiences with Anthropic Interviewer. [Start now](https://clau.de/yourthoughts)","title":"Your voice can help guide AI"}] for tengu_startup_announcements, read as this account.
A reading is one sample. Claude Code evaluates its flags remotely, so no client sees the targeting rule behind a value and this says nothing about your account.
Flag reading moved
The 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`."},{"accentBar":true,"id":"anthropic-interviewer-2026-09-public","maxImpressions":3,"priority":-2,"text":"Take 15 min to share your experiences with Anthropic Interviewer. [Start now](https://clau.de/yourthoughts)","title":"Your voice can help guide AI"}] for tengu_startup_announcements, read as this account.
A reading is one sample. Claude Code evaluates its flags remotely, so no client sees the targeting rule behind a value and this says nothing about your account.
Flag reading moved
The 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.
A reading is one sample. Claude Code evaluates its flags remotely, so no client sees the targeting rule behind a value and this says nothing about your account.
Flag reading moved
The 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.
A reading is one sample. Claude Code evaluates its flags remotely, so no client sees the targeting rule behind a value and this says nothing about your account.