Individual skill

tool-design-checker

Grades MCP tool definitions the way a model reads them: a clear purpose, described parameters, safe annotations such as readOnlyHint, and the token size of every tool. Use when an author wants to lint, grade, or review an MCP server's tools, tool descriptions, or input schemas before release; when a user asks which MCP servers are installed, or how many tools and tokens they add to the context window in Claude Code, Codex, Cursor, Gemini CLI, or OpenCode; when tools overlap or collide across servers and the model picks the wrong one; or when checking an OpenAI or Anthropic function list. Runs locally; starts servers only with --launch and contacts remote servers only with --remote.

skills/tool-design-checker/SKILL.md

Source commit 63e563fed765f82e93df916a12e24e8520b0b37c

What was checked

Matches the observed repository HEAD

Yes

Scanner rules are current

Yes

Repository scan complete

No

Skill scan complete

No

Observed behavior

Network or broad shell

Last checked

Nov 9, 2026

These are observations at the recorded commit, not a guarantee of safety. Review the source before running it.

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An install command is unavailable: current rules, complete repository and skill scans, an eligible behavior level and a permitted license are required.