Ace Commit Message

Generate meaningful commit messages. No story_graph — scope is derived from conversation, changed files, and persisted state (last_commit_scope.json, scope.json).

When to Apply

• User types /commit or requests a commit
• After completing a meaningful change (auto-commit when configured)
• Do NOT commit before completing the user's primary instructions

Key Concepts

• Scope — From last_commit_scope.json, scope.json, conversation, or changed files. Not from story-graph.json.
• Context as scope — When using ace-skills (ace-shaping, ace-context-to-memory, etc.), scope includes: which slice, operation, or output section is being worked on. Chat often reveals this.
• Behavior — Inferred from changed files (code, tests, shape, prioritization, etc.)
• Format — {behavior}.{action}: {meaningful description based on scope}

Commit messages should reflect the active ace-skill, operation, and scope — not generic "update project artifacts".

Output

See content/output.md and docs/ace-commit-msg-output.md for Interaction Tree and State Model.

Build

cd skills/ace-commit-msg
python scripts/build.py