Design Feature.prompt

GPTClaudeDeepSeek··▲ 834 copies·updated 2026-07-14

design-feature-prompt.prompt

---
mode: 'agent'
description: 'Design a new feature following spec-driven development'
---

I need to design a new feature for this project. Act as the Solutions Architect.

Process to follow:
1. Read `docs/spec.md` for project context
2. Read `docs/decisions.md` for previous decisions
3. Ask me about the feature I need (requirements, users, constraints)
4. Propose at least 2 architectural alternatives with pros/cons
5. Recommend one option with justification
6. Document the decision as a new ADR in `docs/decisions.md`
7. If applicable, update `docs/spec.md` with the new requirements
8. Produce Mermaid diagrams if they help explain the design

Do not write code yet — design first, implementation afterwards.

when to use it

Community prompt sourced from the open-source GitHub repo erniker/understudy (MIT). A "Design Feature.prompt" style prompt — adapt the placeholders and specifics to your task. Imported as-is and not independently retested here, so check the output before relying on it.