Agent skill

mega-plan

Project-level multi-task orchestration system. Manages multiple hybrid:worktree features in parallel with dependency resolution, coordinated PRD generation, and unified merge workflow.

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Install this agent skill to your Project

npx add-skill https://github.com/majiayu000/claude-skill-registry/tree/main/skills/data/mega-plan

SKILL.md

Mega Plan

A project-level orchestration system that sits above hybrid-ralph to manage multiple parallel features as a unified project plan.

Auto-Recovery Protocol (CRITICAL)

At the START of any interaction, perform this check to recover context after compression/truncation:

  1. Check if .mega-execution-context.md exists in the project root

  2. If YES:

    • Read the file content using Read tool
    • Display: "Detected ongoing mega-plan execution"
    • Show current batch and active worktrees from the file
    • CRITICAL: All feature work MUST happen in worktrees, NOT main branch
    • If unsure of state, suggest: /plan-cascade:mega-resume --auto-prd
  3. If NO but mega-plan.json exists:

    • Run: python3 "${CLAUDE_PLUGIN_ROOT}/skills/mega-plan/scripts/mega-context-reminder.py" both
    • This will generate the context file and display current state

This ensures context recovery even after:

  • Context compression (AI summarizes old messages)
  • Context truncation (old messages deleted)
  • New conversation session
  • Claude Code restart

Architecture

Level 1: Mega Plan (Project Level)
    └── Level 2: Features (Feature Level) = hybrid:worktree
              └── Level 3: Stories (Story Level) = hybrid internal parallelism

Quick Start

Create a Mega Plan

Generate a mega-plan from your project description:

/mega:plan Build an e-commerce platform with user authentication, product catalog, shopping cart, and order processing

This will:

  1. Analyze your project description
  2. Break it into features with dependencies
  3. Create mega-plan.json, mega-findings.md, .mega-status.json
  4. Display the plan for review

Approve and Execute

After reviewing the mega-plan:

/mega:approve

Or with automatic PRD approval for all features:

/mega:approve --auto-prd

This will:

  1. Calculate feature batches based on dependencies
  2. Create worktrees for Batch 1 features
  3. Generate PRDs in each worktree
  4. Wait for PRD approvals (or auto-approve with --auto-prd)
  5. Execute story batches within each feature
  6. Progress to next feature batch when complete

Monitor Progress

/mega:status

Shows:

  • Overall project progress percentage
  • Feature status by batch
  • Story progress within each feature
  • Current batch details

Complete and Merge

When all features are complete:

/mega:complete

This will:

  1. Verify all features are complete
  2. Merge features in dependency order
  3. Clean up worktrees and branches
  4. Remove mega-plan files

File Structure

project-root/
├── mega-plan.json              # Project-level plan
├── mega-findings.md            # Shared findings (read-only in worktrees)
├── .mega-status.json           # Execution status
├── .worktree/
│   ├── feature-auth/
│   │   ├── prd.json           # Feature PRD
│   │   ├── findings.md        # Feature-specific findings
│   │   ├── progress.txt       # Story progress
│   │   ├── mega-findings.md   # Read-only link to shared findings
│   │   └── .planning-config.json
│   └── feature-products/
│       └── ...

Commands Reference

/mega:plan

Generate a mega-plan from project description.

/mega:plan <project description>

Example:

/mega:plan Create a blog platform with user accounts, article management, comments, and RSS feeds

/mega:edit

Edit the mega-plan in your default editor.

/mega:edit

/mega:approve

Approve the mega-plan and begin execution.

/mega:approve [--auto-prd]

Options:

  • --auto-prd: Automatically approve all generated PRDs (skip manual review)

Approval Modes:

Mode Trigger Use Case
Manual PRD Review /mega:approve Need to review each feature's PRD
Auto PRD Approval /mega:approve --auto-prd Trust PRD generation, want fast execution

/mega:status

Show detailed execution status.

/mega:status

/mega:complete

Complete the mega-plan and merge all features.

/mega:complete [target-branch]

Arguments:

  • target-branch (optional): Override the target branch from mega-plan

mega-plan.json Format

json
{
  "metadata": {
    "created_at": "2026-01-28T10:00:00Z",
    "version": "1.0.0"
  },
  "goal": "Project goal",
  "description": "Original user description",
  "execution_mode": "auto",
  "target_branch": "main",
  "features": [
    {
      "id": "feature-001",
      "name": "feature-auth",
      "title": "User Authentication",
      "description": "Detailed description for PRD generation",
      "priority": "high",
      "dependencies": [],
      "status": "pending"
    }
  ]
}

Feature Status Flow

pending → prd_generated → approved → in_progress → complete
                                           ↓
                                        failed
Status Description
pending Feature not yet started
prd_generated Worktree created, PRD generated
approved PRD approved, ready for execution
in_progress Stories are being executed
complete All stories complete
failed Feature execution failed

Execution Modes

Auto Mode

Features and their story batches execute automatically:

Batch 1 (Features) → PRDs generated → approved → stories execute → complete
         ↓
Batch 2 (Features) → PRDs generated → approved → stories execute → complete
         ↓
All complete → /mega:complete

Manual Mode

Each batch waits for explicit confirmation:

Batch 1 → PRDs generated → [you review] → /approve in each worktree
         ↓
Batch 2 → PRDs generated → [you review] → /approve in each worktree
         ↓
All complete → /mega:complete

Workflows

Complete Workflow

1. /mega:plan "Build e-commerce platform"
   ↓
2. Review generated mega-plan.json
   ↓
3. /mega:edit (if needed) or /mega:approve
   ↓
4. Feature worktrees created (Batch 1)
   ↓
5. PRDs generated in each worktree
   ↓
6. Review and /approve in each worktree (or use --auto-prd)
   ↓
7. Stories execute in parallel
   ↓
8. Monitor with /mega:status
   ↓
9. Batch 2 features start when Batch 1 complete
   ↓
10. All complete → /mega:complete

Multi-Terminal Workflow

bash
# Terminal 1: Main orchestration
/mega:plan "Project description"
/mega:approve
/mega:status  # Monitor progress

# Terminal 2: Feature 1 work
cd .worktree/feature-auth
/approve  # Approve PRD
# ... stories execute ...

# Terminal 3: Feature 2 work (parallel!)
cd .worktree/feature-products
/approve  # Approve PRD
# ... stories execute ...

# Terminal 1: After all complete
/mega:complete

Relationship with Hybrid Ralph

Mega Plan orchestrates multiple hybrid-ralph workflows:

Component Mega Plan Hybrid Ralph
Scope Project-level Feature-level
Unit Features Stories
Files mega-plan.json prd.json
Findings mega-findings.md (shared) findings.md (per-feature)
Worktrees Creates for features Works within worktree
Merge All features → target N/A (handled by mega)

Core Python Modules

mega_generator.py

Generates mega-plan from project descriptions.

bash
# Validate mega-plan
python3 mega_generator.py validate

# Show execution batches
python3 mega_generator.py batches

# Show progress
python3 mega_generator.py progress

mega_state.py

Thread-safe state management.

bash
# Read mega-plan
python3 mega_state.py read-plan

# Read status
python3 mega_state.py read-status

# Sync from worktrees
python3 mega_state.py sync-worktrees

feature_orchestrator.py

Orchestrates feature execution.

bash
# Show execution plan
python3 feature_orchestrator.py plan

# Show status
python3 feature_orchestrator.py status

merge_coordinator.py

Coordinates final merge.

bash
# Verify all complete
python3 merge_coordinator.py verify

# Show merge plan
python3 merge_coordinator.py plan

# Complete (merge & cleanup)
python3 merge_coordinator.py complete

Findings Management

Shared Findings (mega-findings.md)

  • Located at project root
  • Contains findings relevant to all features
  • Read-only copy placed in each worktree
  • Updated only from project root

Feature Findings (findings.md)

  • Located in each feature worktree
  • Contains feature-specific discoveries
  • Tagged with story IDs
  • Independent per feature

Best Practices

  1. Clear Feature Boundaries: Each feature should be independent enough to develop in isolation
  2. Minimize Dependencies: Fewer dependencies mean more parallelism
  3. Meaningful Names: Use descriptive feature names (they become directory names)
  4. Review PRDs: Take time to review generated PRDs before approving
  5. Monitor Progress: Use /mega:status regularly to track execution
  6. Handle Failures: If a feature fails, fix it in its worktree before completing

Troubleshooting

Worktree Conflict

Error: Worktree already exists

Solution: Remove stale worktree or use different feature name.

Merge Conflict

Error: Merge conflict in feature-001

Solution:

  1. Resolve conflict in target branch
  2. Re-run /mega:complete

Incomplete Features

Error: Incomplete features: feature-002, feature-003

Solution:

  1. Check /mega:status for details
  2. Complete stories in incomplete features
  3. Re-run /mega:complete

See Also

  • hybrid-ralph - Feature-level PRD execution
  • planning-with-files - Base planning skill

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