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DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.

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Claude Code v2.1.246

Later workers on self-hosted runners can prewarm too

Under the hood
Useful2 Signal3
Self-Hosted Runners

Any worker on a self-hosted runner can prewarm, not just the first one.

What

Prewarm eligibility no longer requires being the very first worker; any valid worker number of 1 or above qualifies, and the caller is told whether this is a later one.

Details
  • Applies to self-hosted runners only.
  • New helpers parse a checkpoint hint from the session config, validating repo names and 40 to 64 character hex commit SHAs, capping the list at 64 entries and logging what was dropped.
Evidence

worker epoch unknown (

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

Related

Other releases about the same thing. Found by shared names or similar wording; neither means one caused the other.

See this entry in the whole of v2.1.246 →