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Use when designing, reviewing, or evolving API contracts. Provides OpenAPI templates, breaking-change checklists, versioning decision trees, and governance checklists.
Codex または Claude でインストール この Prompt をコピーして Codex、Claude、または他のアシスタントに貼り付けると、Skill ページを確認してインストールできます。
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| name | api-design |
| description | Use when designing, reviewing, or evolving API contracts. Provides OpenAPI templates, breaking-change checklists, versioning decision trees, and governance checklists. |
| compatibility | ["VS Code","Cursor","Windsurf","Claude Code"] |
| metadata | {"category":"Uncategorized","tags":["uncategorized"],"maturity":"beta","audience":["developers"]} |
| allowed-tools | ["bash","git","grep","find"] |
Use this skill when the task involves designing new API contracts, reviewing spec changes for breaking changes, choosing a versioning strategy, or enforcing API governance standards.
Reference this skill by attaching skills/api-design/SKILL.md to your agent context, or instruct the agent:
Use the api-design skill. Apply the OpenAPI template, breaking-change checklist, and governance checklist to the API being designed.
| Template | Purpose |
|---|---|
openapi-template.md | OpenAPI 3.x skeleton for a new REST API resource with full CRUD, pagination, and error envelopes |
breaking-change-checklist.md | Checklist for evaluating whether a spec change is breaking, with mitigation guidance |
versioning-decision-tree.md | Decision tree for choosing the right versioning action for a given change |
api-governance-checklist.md | Governance checklist that every API spec must pass before approval |
This skill is designed to be used alongside the api-designer agent. The agent drives the workflow; this skill provides the reference templates and standards.
For implementation after design, hand off to the backend-dev agent. For data model design, coordinate with the data-tier agent. For consumer integration, share the spec with the frontend-dev agent.
