Official @ClaudeDevs: Claude Code adds claude plugin eval—author test cases, score a plugin/skill against a no-plugin baseline (terminal + HTML), then claude update. Docs at code.claude.com/docs/en/plugin-evals. Evals burn tokens; MCP/hooks run as configured.

Key Takeaways

  • ✓Official claude plugin eval command to quantify plugin/skill value.
  • ✓Test cases with plugin vs no-plugin baseline; terminal + HTML reports.
  • ✓Requires Claude Code update; evals use tokens and run MCP/hooks.
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Up NextClaude Code 2.1.274: 108 CLI changes, tool_use_id loop fix, MCP and memory warnings
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