Source Intelligence

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 v2.1.248

Retry table for cloud session startup failures

Under the hood
Useful2 Signal2
Cloud Sessions

Cloud session startup failures are now classified as retryable or not.

What

Cloud session startup failures now carry a reason and HTTP status, with a table saying which reasons are worth retrying. Epoch conflict, superseded by another worker, session not active and stale epoch are retryable; session not found, expired token and exhausted auth are not. A set of 401, 403, 404 and 429 sits alongside it. The error message itself already existed in the previous build, so what is new here is the classification table.

Evidence

superseded_by_worker

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 v2.1.248 →