REST and GraphQL API design with comprehensive OpenAPI 3.1 specifications and architectural guidance.
Automate repetitive workflows and reduce manual effort
Example: Generate reports, summarize documents, draft communications
Save 3-5 hours per week on routine tasks
Learn new skills, understand complex topics, get expert guidance
Example: Explain concepts, provide examples, suggest learning resources
Accelerate learning and skill development by 2x
Enhance output quality through reviews, suggestions, and refinements
Example: Review drafts, suggest improvements, catch errors
Improve work quality by 30-40% with less effort
Time estimate: 15-45 minutes depending on use case complexity
Prerequisites
Submit your Claude Code skill and start earning
epx add jeffallan/claude-skills --skill api-designerCompatible with
Supported agents
Covers resource modeling, endpoint design, HTTP method semantics, and URI patterns with strict REST principles
Includes OpenAPI 3.1 templates, RFC 7807 error response standards, and validation workflows using Redocly and Prism mock servers
Provides reference guides for versioning strategies, pagination patterns (cursor, offset, keyset), and backward-compatibility planning
Enforces
AI-first code editor with Composer
Before installing skills in Cursor, ensure your development environment meets these requirements:
node --versionapi-designerExecute the skills CLI command in your project's root directory to begin installation:
epx add jeffallan/claude-skills --skill api-designerFetches api-designer from jeffallan/claude-skills and configures it for Cursor.
The CLI shows a list of agents. Use arrow keys and space to select Cursor:
Confirm successful installation by checking the skill directory location:
.cursor/skills/api-designer
Restart Cursor to activate api-designer. Access via /api-designerin your agent's command palette.
Learn more:View source on GitHubSkills CLI docsAbout CursorWhat are agent skills?
Steps
Common Pitfalls
✓ Do
✗ Don't
💡 Pro Tips
✓ Use when
Use when skill capabilities match your task, clear ROI on time saved, and you can validate outputs. Best for repetitive tasks, learning, and quality improvement.
✗ Avoid when
Avoid when task requires deep expertise you can't validate, involves sensitive decisions, or when learning process is more valuable than speed of completion.
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Useful defaults in api-designer — fewer surprises than typical one-off scripts, and it plays nicely with `npx skills` flows.
api-designer reduced setup friction for our internal harness; good balance of opinion and flexibility.
api-designer reduced setup friction for our internal harness; good balance of opinion and flexibility.
We added api-designer from the explainx registry; install was straightforward and the SKILL.md answered most questions upfront.
Solid pick for teams standardizing on skills: api-designer is focused, and the summary matches what you get after install.
I recommend api-designer for anyone iterating fast on agent tooling; clear intent and a small, reviewable surface area.
Solid pick for teams standardizing on skills: api-designer is focused, and the summary matches what you get after install.
We added api-designer from the explainx registry; install was straightforward and the SKILL.md answered most questions upfront.
Registry listing for api-designer matched our evaluation — installs cleanly and behaves as described in the markdown.
I recommend api-designer for anyone iterating fast on agent tooling; clear intent and a small, reviewable surface area.
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