The unofficial-but-tolerated Claude Code Changelog bot (@ClaudeCodeLog) posted 2.1.274 with 108 CLI changes. Highlights: a visible critical-memory warning with safe free/restart steps; sessions no longer loop forever on unexpected tool_use_id 400s (transcripts self-heal when possible, else a clear /rewind error ends the loop); MCP 403 insufficient_scope now names missing permissions and points to /mcp re-auth; CLAUDE_CODE_MCP_STARTUP_WAIT_MS bounds how long the first non-interactive turn waits for MCP servers. Many more MCP/stream, /goal resume, self-hosted runner 401, VS Code, and cloud session/routine fixes. Source: anthropics/claude-code CHANGELOG #21274.

Key Takeaways

  • βœ“2.1.274 ships 108 CLI changes: critical-memory warning with safe restart steps
  • βœ“Stops unexpected tool_use_id 400 retry loops; transcripts self-heal or show /rewind
  • βœ“MCP 403 names missing scopes and points to /mcp; CLAUDE_CODE_MCP_STARTUP_WAIT_MS added
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