Mmcp.market

planning-design skill

by a5c-ai·a5c-ai/babysitter·1.8k stars·MIT

Design technical architecture, select technology stack, and define implementation strategy from specifications and constitution constraints.

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Install the planning-design skill

A skill is a folder. Copy it into your agent's skills folder and the agent loads it when the task matches its description. 

git clone --depth 1 https://github.com/a5c-ai/babysitter.git /tmp/babysitter
mkdir -p ~/.claude/skills
cp -r /tmp/babysitter/library/methodologies/spec-kit/skills/planning-design ~/.claude/skills/planning-design
available in every project

In the Claude apps, zip the folder and upload it from the Skills settings. The folder on GitHub

The instructions your agent would load

SKILL.md as published, without the frontmatter. Read it on GitHub

  • When evaluating technology stack options for a feature
  • When designing system architecture for new components
  • When assessing implementation risks and defining mitigations

Key Principle

Architecture decisions must be traceable to specification requirements. Technology choices must comply with constitution constraints. Trade-offs must be documented for every significant decision.

Process

  1. Assess technology stack - Evaluate options against constitution requirements
  2. Design architecture - Components, interfaces, data model, integration points
  3. Define strategy - Phases, milestones, testing strategy, deployment approach
  4. Assess risks - Identify risks and define mitigations
  5. Human review - Approve architecture and strategy before task breakdown

Tool Use

Invoke via babysitter process: methodologies/spec-kit/spec-kit-planning Full pipeline: methodologies/spec-kit/spec-kit-orchestrator

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