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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.

← All of v2.1.30 Home All releases ←olderv2.1.29 v2.1.31newer→
Claude Code v2.1.30

  • Cycle detection in message threading: Prevents infinite loops when building message chains by detecting cycles in the parentUuid chain (search for "Cycle detected in parentUuid chain")
  • WebSocket dead connection detection: New "No pong received, connection appears dead" check for WebSocket MCP transports, improving connection reliability (search for "No pong received, connection appears dead")
  • Idle teammate null reference fix: Guard against null frozenDurationRef for idle teammates (search for "frozenDurationRef is null for idle teammate")
  • Edit tool error message: New specific error message "string to replace not found" for failed Edit operations (search for "string to replace not found")

See this entry in the whole of v2.1.30 →