OpenAgentSkill Registry Manifest
Skill: gat-milestone
Slug: yuki001-gat-milestone
Category: design-creative
Description: Plan milestone slices from overview + narrative alone (no system GDDs required), create per-milestone directory skeletons and briefs, and write gat/milestone/milestone.md. Runs before per-system design. Stops before technical design, task breakdown, or implementation.

Agent fit:
- Decision: 58/100 Prototype first
- Primary fit: Coding agents
- Role: Fallback candidate

Supply profile:
- Track: Design and creative production
- Scenario: Design and creative
- Applicable agents: Claude Code, CLI, Codex, Cursor
- Maintenance: 3d since push
- Risk: Needs review

Trust:
- Trust score: 67/100 Manual review
- Audit: 73/100 Needs review

Attribution:
- Status: Registry indexed
- Source: recursive skill source sync
- Creator: Yuki001
- Claim URL: https://www.openagentskill.com/skills/yuki001-gat-milestone#claim-this-skill

Install:
npx skills add Yuki001/game-dev-skills --skill gat-milestone

URLs:
- Web: https://www.openagentskill.com/skills/yuki001-gat-milestone
- API: https://www.openagentskill.com/api/agent/skills/yuki001-gat-milestone
- Install API: https://www.openagentskill.com/api/skills/yuki001-gat-milestone/install
- Repository: https://github.com/Yuki001/game-dev-skills/tree/main/gat/.claude/skills/gat-milestone