speckit-implement

To execute a spec-kit implementation plan, run the skill to read tasks.md and plan.md, validate prerequisites, and process tasks sequentially in phase order. It enforces dependency constraints and marks completed tasks in the file while reporting progress.

Checklist gating is a validation mechanism that scans project checklists to produce a PASS/FAIL table before executing implementation tasks. It optionally halts the workflow entirely until all required checklist items are marked as completed.

Running implementation tasks with constraints involves reading planning artifacts like tasks.md to respect sequential and parallel execution rules. The skill coordinates file-based dependencies and processes tasks phase-by-phase to maintain correct execution order.

Yes, you need a .specify directory containing prerequisite scripts, extensions.yml for hooks, and planning artifacts like tasks.md and plan.md. The skill validates this repo structure and loads these configuration files before executing implementation phases.

Yes, hook execution from .specify/extensions.yml is honored during the implementation workflow. The skill triggers after-implement hooks automatically, but only after requiring completion validation for the preceding task.

Your implementation plan stops running because checklist gating detects incomplete items and halts execution. The prerequisite checker may also fail if required planning artifacts like tasks.md or plan.md are missing from the project structure.