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Generate API mocks and stub servers from OpenAPI specs or code analysis

Create mock endpoints with scenario support.

Explains the standardized API organization pattern for this codebase. Use when creating new API endpoints, API clients, or modifying existing API structure. Covers the 5-file system (endpoint-types, endpoints, api-client, admin-api-client, protected-endpoints), role-based access patterns (admin vs regular users), and TypeScript type safety across the API layer. All API code lives in src/lib/api/ following this exact pattern.

Systematic methodology for debugging pagination issues in API integrations, especially when switching between API versions or endpoints. Auto-activates when pagination stops early, returns duplicate results, or fails to iterate through complete datasets. Covers cursor-based vs page-based pagination, API response structure verification, and efficiency optimization. Trigger keywords: pagination bug, API not paginating, stuck at one page, cursor pagination, nextPageCursor, page-based pagination. (project)

Implement efficient pagination strategies for large datasets using offset/limit, cursor-based, and keyset pagination. Use when returning collections, managing large result sets, or optimizing query performance.

API design principles and decision-making. REST vs GraphQL vs tRPC selection, response formats, versioning, pagination.

Create complete REST API CRUD operations using API Platform 4 with DDD and CQRS patterns. Use when adding new API resources, implementing CRUD endpoints, creating DTOs, configuring operations, or setting up state processors. Follows the repository's hexagonal architecture with YAML resource configuration and command bus pattern.

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Implement API rate limiting strategies using token bucket, sliding window, and fixed window algorithms. Use when protecting APIs from abuse, managing traffic, or implementing tiered rate limits.

Creates professional API documentation using OpenAPI specifications with endpoints, authentication, and interactive examples. Use when documenting REST APIs, creating SDK references, or building developer portals.

Эксперт по API reference документации. Используй для создания справочников по API, описания endpoints и примеров запросов.

Expert API research including discovery, evaluation, integration analysis, and documentation review

Reduce payload size and enable compression.

API response wrapper patterns for consistent, predictable REST APIs in ABP Framework. Use when: (1) designing uniform API response contracts, (2) implementing success/error response wrappers, (3) handling pagination and metadata, (4) standardizing error responses.

api-review

Create a new Next.js API route with x402 micropayment middleware

Implement secure API design patterns including authentication, authorization, input validation, rate limiting, and protection against common API vulnerabilities

Apply rate limiting, input validation, and injection defenses.

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Use when implementing API authentication, authorization, or security patterns. Covers OAuth 2.0, OIDC, JWT, API keys, rate limiting, and common API security vulnerabilities.

Analyzes API documentation from OpenAPI specs to provide TypeScript interfaces, request/response formats, and implementation guidance. Use when implementing API integrations, debugging API errors (400, 401, 404), replacing mock APIs, verifying data types, or when user mentions endpoints, API calls, or backend integration.

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Response wrapping, pagination, and error standardization.

Style and formatting rules for API/SDK documentation, samples, and tutorials.

Follow API development conventions including RESTful design, Fastify patterns, Zod validation, error handling, and versioning. Use when building API endpoints, adding routes, or working with API code.

Strategies for designing comprehensive API tests including contract testing, integration testing, and performance testing

Auto-generate comprehensive API tests for REST and GraphQL endpoints with request/response validation

Generate comprehensive API endpoint tests for REST and GraphQL APIs.

Quick API endpoint testing with comprehensive request/response validation.

You are an API mocking expert specializing in realistic mock services for development, testing, and demos. Design mocks that simulate real API behavior and enable parallel development.

Validate API responses and schemas.

Test FastAPI endpoints with pytest and generate API documentation. Use when creating new APIs or verifying existing endpoints work correctly.

API testing, documentation, and development tools

Helps developers configure API-triggered campaigns in the Clix console and

Эксперт по написанию API-туториалов и документации. Используй для создания гайдов по интеграции API, документации endpoints, примеров кода на разных языках, обработки ошибок и best practices.

Generates TypeScript interfaces from API responses or OpenAPI schemas. Use when the user asks about typing API responses, creating interfaces from JSON, parsing Swagger/OpenAPI, or keeping types in sync with backend.

Any time an external api needs to be understood or queried

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API contract validation and breaking change detection

Apply when validating API request inputs: body, query params, path params, and headers. This skill covers Zod v4 patterns.