Enforces REST API design standards for endpoints, validation, responses, and rate limiting.
npx skills add https://github.com/hellowind777/helloagents --skill hello-api
Please help me install this Agent Skill. Skill: hello-api Source: https://github.com/hellowind777/helloagents/tree/main/skills/hello-api Command: npx skills add https://github.com/hellowind777/helloagents --skill hello-api
API code often ships with inconsistent status codes, missing input validation, unpaginated list endpoints, and no rate limiting, leading to fragile integrations and security gaps. This Skill provides a concrete checklist of API design rules so every endpoint follows the same contract.
{ data, meta? }) and error ({ error: { code, message, details? } }) response shapes./users endpoint, the Skill ensures you add pagination, sorting, filter whitelists, and a delivery checklist before marking the work complete.Ask the AI to build or review a REST API endpoint following the hello-api standards, for example: create a paginated GET /v1/users endpoint with validated query parameters.
High-intent search queries and answers about installing and using this skill.
Use plural nouns for resources like /users, nest related resources like /users/:id/posts, and map HTTP methods to semantics: GET reads, POST creates, PUT fully updates, PATCH partially updates, DELETE removes. Return accurate status codes such as 201 for creation and 422 for validation failures.
Validate inputs at the controller layer using a schema validation library such as zod, joi, or ajv. Check types, ranges, formats, and required fields, and also limit file upload sizes and overall request body size.
Every list endpoint must support pagination, either page-based with ?page=1&limit=20 or cursor-based. Also support sorting via ?sort=created_at&order=desc and restrict filter parameters to a whitelist.
Return 200 for success, 201 for creation, 204 for no content, 400 for bad parameters, 401 for unauthenticated, 403 for forbidden, 404 for missing resources, 409 for conflicts, 422 for validation failures, and 500 for server errors.
Apply rate limiting per IP, user, or API key, set timeouts on all external calls, and configure CORS with explicitly allowed origins instead of using a wildcard. Version the API via a URL prefix like /v1/ or a header.
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