Plan Epic

Epic Planner (Action Graph)

When to activate

Activate when starting a large, multi-file feature, refactor, or migration. It prevents hallucinations and context-loss by forcing Claude to map out dependencies before writing code. Invoked via /plan-epic.

When NOT to use

Do not use for single-file edits, bug fixes, or minor UI adjustments.

Instructions

1. Pause execution. Do not write any application code yet.
2. Create an EPIC_GRAPH.md file in the project root.
3. Use a strict Action Graph format to map out the execution plan. Every step MUST have defined Preconditions (what must be true before this starts) and Postconditions (what must be true when it finishes).
4. Format:

   # Epic: [Name]
   
   ## Step 1: [Task Name]
   - **Agent/Role:** [e.g., Database Admin]
   - **Preconditions:** [e.g., None]
   - **Action:** [What specifically needs to be written/changed]
   - **Postconditions/Verification:** [e.g., Migration script runs without errors, schema matches ERD]
   
   ## Step 2: [Task Name]
   - **Agent/Role:** [e.g., Backend API Developer]
   - **Preconditions:** [e.g., Step 1 Postconditions met]
   - **Action:** [...]
   - **Postconditions/Verification:** [e.g., Unit tests pass with 90% coverage]
   

5. Ask the user to review and approve the EPIC_GRAPH.md before you begin executing Step 1.

Example

User: /plan-epic Implement Role-Based Access Control (RBAC) Claude: [Writes EPIC_GRAPH.md breaking the task into Database Schema, Middleware Logic, Controller Updates, and Frontend Gates]. "Please review the action graph. Should I proceed with Step 1?"