Nothing to try yetTier: how much it should matter to you
2Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
Rate LimitsArea: what it touches
In DevelopmentKind: in v2.1.280,
In DevelopmentSection of the release
Unclear Whether this heartbeat message is actually shown depends on the tengu_rustling_sunset gate, which has not been read for this account.
What
Claude Code recognizes a new kind of system message with subtype api_retry.
While a request is waiting to retry after hitting a rate limit, new logic polls the pending retry on a timer and emits this synthetic system/api_retry message, including the attempt number, max retries, retry delay in milliseconds, and the error type (rate_limit).
This gives a visible heartbeat in the UI so that when Claude Code is silently waiting to retry a rate-limited request, you can see that it's actually working through the wait rather than appearing stuck.
Read from
Feature flag
tengu_rustling_sunsetNot enough to say
Nothing 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 v2.1.280: on
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.
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubtWhether this heartbeat message is actually shown depends on the `tengu_rustling_sunset` gate, which has not been read for this account.
The name it cites is new in this buildNew in this build: tengu_rustling_sunset
