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All of v2.1.234 Home All releases olderv2.1.233 v2.1.235newer
Claude Code v2.1.234

Background REPL evaluations report back into the conversation

You'll notice
Useful3 Signal3
REPL

Background REPL evaluations now return an id and feed their results back into the conversation.

What

Starting an asynchronous REPL evaluation now returns an evaluation id and the current queue depth, and when the evaluation finishes its output is inserted back into the conversation instead of being lost. Dispatching more than the per-context queue cap allows is rejected outright.

Details
  • The settled output arrives as a repl-eval element, after hooks have had a pass at it.
  • Output is truncated to a byte budget, cut on a UTF-8 character boundary so multi-byte text is not split.
  • If a hook blocks the output, it is withheld with that fact recorded rather than silently dropped.
  • repl_async_settle telemetry separates the withheld case, the hook-failed-open case and the case where the result never reached the conversation.
Evidence

async REPL dispatch rejected: queue depth cap

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 v2.1.234 →