Phase 2 backend ACT skill. Use when implementing API endpoints from the PRD API contract — writes endpoint code, input validation, the 7 standard error responses, and auth wiring, then hands Red/Green/Refactor to test-driven-development.
$npx -y skills add luckyonetwothree/harness-all --skill api-implementationInstalls into the current project.
Run `npx skills use "https://github.com/luckyonetwothree/harness-all" --skill "luckyonetwothree/harness-all/api-implementation"` 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/luckyonetwothree/harness-all" that are relevant to the current task. Run `npx skills add "https://github.com/luckyonetwothree/harness-all"` and select the relevant skills, then follow their instructions.