gsd-spec-phase

SkillDev tools

Lets your agent score and clarify what a project phase should deliver and produce a SPEC.md file.

Available today. Use it from your connected AI after setup.

Connect ahel once, and every AI you use reads what you have installed.

Then ask your AI: use the gsd-spec-phase skill

About this capability

Clarify WHAT a phase delivers with ambiguity scoring; produces a SPEC.md before discuss-phase.

What this skill tells your AI

The instructions your AI receives, as published by open-gsd/gsd-core in skills/gsd-spec-phase/SKILL.md and read by ahel’s review.

Position in workflow: spec-phase → discuss-phase → plan-phase → execute-phase → verify

How it works:

  1. Load phase context (PROJECT.md, REQUIREMENTS.md, ROADMAP.md, STATE.md)
  2. Scout the codebase — understand current state before asking questions
  3. Run Socratic interview loop (up to 6 rounds, rotating perspectives)
  4. Score ambiguity across 4 weighted dimensions after each round
  5. Gate: ambiguity ≤ 0.20 AND all dimensions meet minimums → write SPEC.md
  6. Commit SPEC.md — discuss-phase picks it up automatically on next run

Output: {phase_dir}/{padded_phase}-SPEC.md — falsifiable requirements that lock "what/why" before discuss-phase handles "how"

<execution_context> @/.claude/gsd-core/workflows/spec-phase.md @/.claude/gsd-core/templates/spec.md </execution_context>

<runtime_note> Copilot (VS Code): Use vscode_askquestions wherever this workflow calls AskUserQuestion. They are equivalent. </runtime_note>

Flags:

  • --auto — Skip interactive questions; Claude selects recommended defaults and writes SPEC.md
  • --text — Use plain-text numbered lists instead of TUI menus (required for /rc remote sessions)

Context files are resolved in-workflow using init phase-op.

MANDATORY: Read the workflow file BEFORE taking any action. The workflow contains the complete step-by-step process including the Socratic interview loop, ambiguity scoring gate, and SPEC.md generation. Do not improvise from the objective summary above.

<success_criteria>

  • Codebase scouted for current state before questioning begins
  • All 4 ambiguity dimensions scored after each interview round
  • Gate passed: ambiguity ≤ 0.20 AND all dimension minimums met
  • SPEC.md written with falsifiable requirements, explicit boundaries, and acceptance criteria
  • SPEC.md committed atomically
  • User knows they can now run /gsd-discuss-phase which will load SPEC.md automatically </success_criteria>

Signals

GitHub stars
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Forks
671
Last commit
Sep 2026
Advanced
Catalog kind
skill
Gateway key
gsd-spec-phase
Source
github.com/open-gsd/gsd-core