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prp-plan

Create comprehensive feature implementation plan with codebase analysis and pattern extraction

Kind
Prompt
Works with
Claude Code, Codex
Source
affaan-m/ECC @ d3b8a3e90890
Path
commands/prp-plan.md
License
MIT
Jobs
Planning, Implementation, Review
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> Adapted from PRPs-agentic-eng by Wirasm. Part of the PRP workflow series.

# PRP Plan

Create a detailed, self-contained implementation plan that captures all codebase patterns, conventions, and context needed to implement a feature in a single pass.

**Core Philosophy**: A great plan contains everything needed to implement without asking further questions. Every pattern, every convention, every gotcha — captured once, referenced throughout.

**Golden Rule**: If you would need to search the codebase during implementation, capture that knowledge NOW in the plan.

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## Phase 0 — DETECT

Determine input type from `$ARGUMENTS`:

| Input Pattern | Detection | Action |
|---|---|---|
| Path ending in `.prd.md` | File path to PRD | Parse PRD, find next pending phase |
| Path to `.md` with "Implementation Phases" | PRD-like document | Parse phases, find next pending |
| Path to any other file | Reference file | Read file for context, treat as free-form |
| Free-form text | Feature description | Proceed directly to Phase 1 |
| Empty / blank | No input | Ask user what feature to plan |

### PRD Parsing (when input is a PRD)

1. Read the PRD file with `cat "$PRD_PATH"`
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