Copilot Clinic — GitHub Copilot instructions, prompts & chat mode review

Paste your GitHub Copilot customization kit - .github/copilot-instructions.md, .github/instructions/*.instructions.md, *.prompt.md, *.chatmode.md, AGENTS.md, .vscode/mcp.json - and get a senior developer-experience engineer's review: a posture (ready-to-commit / tighten-first / not-working-as-written), the inventory of every file, rule, glob, variable, tool and server, prioritized findings with corrected frontmatter, and the whole .github/copilot-instructions.md handed back rewritten, sectioned and falsifiable. A free instant prescan parses the files in your browser first - real YAML frontmatter parsing, glob validation, rule extraction and mcp.json JSON parsing - and flags the applyTo glob written without quotes that silently kills a file's scope, scopes that are missing or set to **, overlapping applyTo sets, unterminated frontmatter, prompt files stuck in ask mode, empty tool lists, missing descriptions, frontmatter keys Copilot never reads, ${variables} the editor never substitutes, rules stated twice, rules that contradict each other, unenforceable phrasing, persona padding, instruction bloat, paths outside the repository, an AGENTS.md with no commands, and unpinned, plaintext or credential-carrying MCP servers. Derived from the @github/awesome-copilot skill (MIT).

Every public app is built from a security-scanned skill and must pass a clean scan — skill and frontend — before it can be listed. Have a skill of your own? Turn it into an app — or read the step-by-step walkthrough.