# API Contract Design

> Design backend API contracts that remain stable across dashboard and worker callers.

- Skill: `onfire7777/api-contract-design` (Agent Skill)
- Install (CLI): `npx skillmds@latest add onfire7777/api-contract-design`
- Raw SKILL.md: https://api.skillmd.com/api/skills/onfire7777/api-contract-design/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Integrations & APIs
- Author: onfire7777 (https://skillmd.com/u/onfire7777)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/onfire7777/api-contract-design

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# API Contract Design

- Model resources as typed shared schemas.
- Validate incoming request bodies.
- Keep response envelopes stable.
- Add route-level regression tests for new behavior.
- Coordinate breaking changes through RFC and shared contract updates.