Mpx Create Spec

Create Project Specification

Interactive specification creation with intelligent tech stack suggestions.

Iron Law

DOCUMENTATION ONLY. Creates .mpx/SPEC.md only. Never modifies source code.

Workflow

Step 1: Gather Project Idea

Ask the user to describe their project idea in free-form text:

"What would you like to build? Describe your project idea - what it does, who it's for, and any key features you have in mind."

Step 2: Analyze and Extract

From the user's description, identify:

• Core functionality
• Target users
• Key features (list them)
• Potential technical requirements

Step 3: Tech Stack Questions

Use AskUserQuestion to ask about technology choices. Ask contextually relevant questions based on the project type:

Language Selection:

question: "What programming language would you like to use?"
options:
  - TypeScript (Recommended for web projects)
  - Python (Great for backends, data, ML)
  - Go (High-performance services)
  - Other (specify)

If TypeScript/JavaScript selected:

question: "Which package manager do you prefer?"
options:
  - npm (Default, widely supported)
  - yarn (Fast, reliable)
  - pnpm (Efficient disk space)
  - bun (Fast, all-in-one)

Framework (contextual based on project type):

For web frontend:

question: "Which frontend framework?"
options:
  - React (Most popular, large ecosystem)
  - Vue (Progressive, easy to learn)
  - Svelte (Compiled, fast)
  - Vanilla JS (No framework)

For backend API:

question: "Which backend framework?"
options:
  - Express (Node.js, minimal)
  - Fastify (Node.js, fast)
  - FastAPI (Python, modern)
  - Hono (Edge-first, fast)

Database (if needed):

question: "Do you need a database?"
options:
  - SQLite (File-based, simple)
  - PostgreSQL (Robust, scalable)
  - MongoDB (Document-based)
  - None (No database needed)

Testing:

question: "Which testing framework?"
options:
  - Vitest (Fast, Vite-native)
  - Jest (Popular, full-featured)
  - Pytest (Python standard)
  - None (Skip for now)

Step 4: Generate SPEC.md

Create .mpx/SPEC.md with all gathered information:

# Project Specification

## Project Name

[Name from user]

## Description

[User's description, cleaned up]

## Tech Stack

- Language: [selected]
- Package Manager: [selected]
- Framework: [selected]
- Database: [selected]
- Testing: [selected]

## Core Features

1. [Feature 1]
2. [Feature 2]
   ...

## Technical Requirements

- [ ] [Auto-generated based on tech stack]
- [ ] [e.g., "Set up TypeScript configuration"]
- [ ] [e.g., "Configure ESLint and Prettier"]

## Success Criteria

- [Generated from features]

## Notes

[Any additional context from conversation]

Step 5: Summary

Show the user what was created and suggest next steps:

"Created .mpx/SPEC.md with your project specification.

Summary:

• Project: [name]
• Tech: [stack summary]
• Features: [count]

Next steps:

• Run /mpx-parse-spec to generate phased implementation plan

Notes

• Always create SPEC.md in .mpx/ directory
• If .mpx/ doesn't exist, create it
• If SPEC.md already exists, ask before overwriting
• Be helpful with tech stack suggestions based on project type