PRD to Issues
Break a PRD into independently-grabbable GitHub issues using vertical slices (tracer bullets).
Process
1. Locate the PRD
Ask the user for the PRD GitHub issue number (or URL). Fetch it with gh issue view <number>. Read and internalize the full PRD content (with all comments).
2. Explore the codebase
Read the key modules and integration layers referenced in the PRD. Identify:
- The distinct integration layers the feature touches (e.g. DB/schema, API/backend, UI, tests, config)
- Existing patterns for similar features
- Natural seams where work can be parallelized
3. Draft vertical slices
Break the PRD into tracer bullet issues. Each issue is a thin vertical slice that cuts through ALL integration layers end-to-end, NOT a horizontal slice of one layer.
<vertical-slice-rules> - Each slice delivers a narrow but COMPLETE path through every layer (schema, API, UI, tests) - A completed slice is demoable or verifiable on its own - Prefer many thin slices over few thick ones - The first slice should be the simplest possible end-to-end path (the "hello world" tracer bullet) - Later slices add breadth: edge cases, additional user stories, polish </vertical-slice-rules>4. Quiz the user
Present the proposed breakdown as a numbered list. For each slice, show:
- Title: short descriptive name
- Layers touched: which integration layers this slice cuts through
- Blocked by: which other slices (if any) must complete first
- User stories covered: which user stories from the PRD this addresses
Ask the user:
- Does the granularity feel right? (too coarse / too fine)
- Are the dependency relationships correct?
- Should any slices be merged or split further?
- Is the ordering right for the first tracer bullet?
- Are there any slices missing?
Iterate until the user approves the breakdown.
5. Create the GitHub issues
For each approved slice, create a GitHub issue using gh issue create. Use the issue body template.
Create issues in dependency order (blockers first) so you can reference real issue numbers in the "Blocked by" field.
After creating all issues, print a summary table:
| # | Title | Blocked by | Status |
|---|-------|-----------|--------|
| 42 | Basic widget creation | None | Ready |
| 43 | Widget listing | #42 | Blocked |
Do NOT close or modify the parent PRD issue.