Best-practice authoring guidance AND a read-only policy gate for AWS Terraform generated by a migration skill. Load during any phase that writes a terraform/ directory — first as the "what to emit" posture rules + security-baseline spec, then after writing as the deterministic policy verdict. Read-only: it reports whether the generated Terraform passes; it never edits .tf files, never touches .phase-status.json, and never decides phase completion. Complements (does not replace) terraform fmt/init/validate.
$npx -y skills add awslabs/startups --skill tf-best-practicesInstalls into the current project.
Run `npx skills use "https://github.com/awslabs/startups" --skill "awslabs/startups/tf-best-practices"` and follow the generated skill instructions now. Read its complete output, redirecting it to a temporary file first if necessary. Resolve relative paths from the supporting-files directory it provides.
Use the skills in "https://github.com/awslabs/startups" that are relevant to the current task. Run `npx skills add "https://github.com/awslabs/startups"` and select the relevant skills, then follow their instructions.