skill-engineer-v1

Build and test Claude Code skills using a red-green-refactor workflow that writes failing eval cases first, then implements the skill logic until all tests pass deterministically. It processes skill-guidance handoff specifications to generate fully built skills.

Yes, Node.js 18+ is required to run scaffold scripts, eval harnesses, and trigger-eval measurement tools against the skill-principle knowledge base for deterministic verification.

Yes, the test-driven workflow applies to both deterministic script skills and LLM-behavioral skills, supporting eval cases, trigger measurement, and build reports for pipeline handoff.

Verify skills deterministically by running re-runnable eval harnesses and mutation spot-checks that prove the skill actually works, rather than relying on manual inspection or guesswork.

The skill serves as Stage 2 of a skill-building pipeline, handing off a build report to skill-zipper for compression after completing the red-green-refactor implementation and verification cycle.

Writing failing eval cases first ensures skills are built test-first with deterministic verification, preventing guesswork and proving the implementation satisfies the skill-guidance handoff specification.