What problem does it solve?
The TDD skill coordinates the planning phase that turns an approved spec or quickfix request into a concrete, test-first execution plan, so the harness can move from intake to implementation without losing scope or order.
Core Features & Use Cases
- Decides the scenario recipe for each acceptance criterion and clearly names out-of-scope cases.
- Builds the implementation contract, including failing test paths, write set, behavior excerpts, and project conventions.
- Writes the coordinator state file, seeds sequential worker tasks, and prepares inlined verification and drift analysis for a disciplined handoff.
- Use it when a workflow is ready to move from approved spec into scenario design, implementation, verification, and drift checking.
Quick Start
Ask the tdd skill to read the approved spec or quickfix brief and produce the scenario recipe, implementation contract, task seed, and harness continuation state for the next phase.