Spec Coding Skill

A spec-driven methodology for LLM agents to define, plan, and implement coding work with quality and consistency. Uses round-based iterative execution — when problems arise during implementation, they are logged and resolved in subsequent rounds rather than silently deviating from the plan. Includes automatic task sizing — trivial fixes skip document ceremony, while complex features get the full structured flow.

STOP — Mandatory Startup Sequence

Do each step in order. Do not skip any step. Each step is a hard gate — the next step depends on information from the previous one.

Step 1 — Read Global Agent Rules (DO NOT SKIP)

MUST read 00-agent-execution.md before doing anything else. This file defines rules that override all phase-specific instructions: Task Sizing, Phase Transition Re-read Discipline, Self-Check, Deviation Protocol, and Round-based Execution Model. If you skip this file, you will miss mandatory rules and violate the process.

Step 2 — Check Project State

Check if .dev/blueprint.md exists: