Api design

Skill subhansh-dev/agent-maxxing/engineering/api-design

95+ agent skills, 19 UI components, 7 system prompts from Claude Fable 5, GPT-5.5, Gemini CLI & more. Self-fine-tune your agent: paste one prompt and it reads every skill, internalizes patterns, and becomes elite. Works with Claude Code, Codex, Cursor, OpenCode + 60 more agents.

Install

npx -y skills add subhansh-dev/agent-maxxing --skill api-design

Assembled from the repository path, not quoted from the project. Check it against their README if it does not work.

2 things to look at

28 days oldThe repository was created 28 days ago. New is not bad, but a brand new repository carrying a familiar-sounding name is the shape a typosquat arrives in, and there has been no time for anyone else to find a problem with it.
2 stars2 stars. Stars are a popularity signal and not a quality one, but at this level it is likely that nobody has read this closely except its author, and you would be relying on your own review.

What its author says it does

Copied from the file, not written here

REST API design patterns — naming, versioning, error handling, pagination, authentication.

SKILL.md

1.7 KB, as published. Nobody here has run it

API Design Patterns

Naming

Use nouns, not verbs: /users not /getUsers
Use plural: /users not /user
Use kebab-case for multi-word: /user-profiles
Nest for relationships: /users/123/posts

HTTP Methods

GET — read (idempotent)
POST — create
PUT — replace (idempotent)
PATCH — partial update
DELETE — remove (idempotent)

Status Codes

200 — OK
201 — Created
204 — No Content (successful DELETE)
400 — Bad Request (validation error)
401 — Unauthorized (no token)
403 — Forbidden (no permission)
404 — Not Found
409 — Conflict (duplicate)
422 — Unprocessable (valid JSON, invalid data)
429 — Too Many Requests
500 — Internal Server Error

Error Response

{
  "error": {
    "code": "VALIDATION_ERROR",
    "message": "Email is required",
    "details": [
      { "field": "email", "message": "Required" }
    ]
  }
}

Pagination

GET /users?page=2&limit=20

{
  "data": [...],
  "pagination": {
    "page": 2,
    "limit": 20,
    "total": 150,
    "totalPages": 8
  }
}

Authentication

Use Bearer tokens: Authorization: Bearer <token>
Return 401 for missing/invalid tokens
Return 403 for insufficient permissions

Versioning

URL path: /v1/users (simplest, most common)
Header: Accept: application/vnd.api.v1+json

Rate Limiting

Return headers:

X-RateLimit-Limit: max requests per window
X-RateLimit-Remaining: requests left
X-RateLimit-Reset: when the window resets