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Spec-driven development

3 posts tagged Spec-driven development.

September 10, 2026 · Leif

SpecSync 6.0 is out, and check is still the product

SpecSync 6.0.0 is on GitHub Latest and crates.io. The product is still bidirectional check. The verified change workflow is opt-in, uses slug ids, and ships through one path: new, approve, check --commit, review, ship.
August 23, 2026 · Leif

Three explanations, and the one we never tested

Why spec-sync changes stopped closing on this repo. Two explanations died to commands, one killed itself the moment we acted on it, and the one that matters most is still untested.
June 15, 2026 · Leif

I wanted my specs checked both ways, so I built spec-sync

spec-sync is my own take on spec-driven development: a CLI that checks spec and code against each other in both directions and fails CI when they drift.