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Add MCP server guardrails skill and prompt for coding agents - #79
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Adds a Skillbook entry and a matching Promptbook entry for locking down the MCP servers that coding agents use.
coding-agent-mcp-server-guardrails: where MCP config lives for Copilot (VS Code and cloud agent), Claude Code, and Codex; an approved, owned server list; exact version pins instead of@latest; tool allowlists that start read-only; approvals for write tools; credentials by reference with least-privilege tokens; tool output treated as untrusted; MCP config files reviewed like code; explicit config for headless CI runs; timeouts, output caps, and sandboxed local servers.harden-coding-agent-mcp-config: step-by-step audit that inventories servers, pins and scopes them, sets tool and approval policy per tool, moves secrets to references, locks down CI, and adds CODEOWNERS plus a config check, with containment tests.Catalogs go to 43 skills and 43 prompts. Catalog validation from
scripts/site-check.mjspasses locally.