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Reading a new release v2.1.251 Analysing changes · 2/5 Deeper second pass · 0/5 agents 427 findings $12.75 so far

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.

All of v2.1.21 Home All releases olderv2.1.20 v2.1.22newer
Claude Code v2.1.21

  • Fixed stream completion fallback trigger when message_start received but no content blocks completed ("Stream completed with message_start but no content blocks completed - triggering non-streaming fallback")
  • Fixed agent logging to properly identify agent in compact messages ("[inProcessRunner] ${K.agentId} compacting history" now includes agent ID)

See this entry in the whole of v2.1.21 →