Build and run an eval harness for an agent skill or prompt LOCALLY with Overfit — deterministic (seeded/greedy), offline, zero API cost, with schema-guaranteed rubric grading. Use when asked to test/evaluate/score a skill or prompt, catch prompt regressions, or measure whether a prompt change helped.
$npx -y skills add devonbike/overfit --skill overfit-skill-evalInstalls into the current project.
Run `npx skills use "https://github.com/devonbike/overfit" --skill "devonbike/overfit/overfit-skill-eval"` 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/devonbike/overfit" that are relevant to the current task. Run `npx skills add "https://github.com/devonbike/overfit"` and select the relevant skills, then follow their instructions.