---
name: a5c-ai/planning-design
source: https://app.decimal.ai/s/a5c-ai-planning-design@1/SKILL.md
source_sha256: 962b4440af4d
---

- 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`