What the reviewer found
A documentation guide for building MCP servers; the ~/.aws/credentials check is a debugging one-liner that only tests file existence (never reads content), and 'rm -rf node_modules package-lock.json' is the standard scoped npm-reinstall recipe. The security-best-practices section actively teaches input validation, rate limiting and avoiding hardcoded secrets.
What was read
The file as it ships in ckorhonen/claude-skills:
skills/mcp-builder/SKILL.md
What the static scan said
The scan flagged 3things. The reviewer kept 1 and dismissed 2 as false.
PE3Reaches for credential files — false positiveRMRecursive force delete — false positiveNETMakes network calls — real
How this review was made
Sonnet 5 read the files above on 7 September 2026 and answered three questions: is it dangerous to whoever installs it, is each scanner finding real, and what should the installer know. The verdict is bound to the file's hash; when the file changes, it is scanned afresh and reviewed again. A script that changes while the definition does not is not re-reviewed — that is a known gap. How the scan and the review work.