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
Claude Code v2.1.277 ·

Artifact publishing now gives clearer errors when rate-limited

Publishing an artifact now shows specific messages when it's rate-limited, including retry timing and which step failed

TierYou'll noticehow much it should matter to you
Useful2my rating, 1 to 5
Signal2worth watching, 1 to 5
AreaArtifact Publishwhat it touches
KindImprovementsin v2.1.277,
Group of 2 You'll notice

Publishing an artifact now shows specific messages when it's rate-limited, including retry timing and which step failed

What

The artifact publish tool now detects and reports rate-limit (HTTP 429) responses at each stage of publishing, preflight and upload alike, using a new response-checking helper. When a 429 is hit, a new message builder reports:

  • that nothing was published and the request was rate-limited
  • the reserved slug involved
  • which step was refused (for example, staging a publish's copied files)
  • retry-after-based wait-time information, so the user knows when to try again

A distinct 422 'contract is newer than preferred' handshake message was also added for a separate related failure mode.

Why

Previously a rate-limited or conflicting publish attempt likely surfaced as a generic failure. Now the error clearly explains that nothing was published, why, and when it's safe to retry, making it easier to recover from a failed artifact publish.

See this entry in the whole of v2.1.277 →