API Development

Generates FastAPI endpoints with proper Pydantic models, dependency injection, async handlers, and OpenAPI documentation. Use when building Python REST APIs.

Production observability with tracing, OpenTelemetry, and Prometheus metrics including structured logging, instrumented functions, distributed tracing, health checks, and request correlation. Use when adding logging, metrics, tracing, or health endpoints to Rust services.

Create React Router 7 routes with proper type imports, loaders, and actions. Use when adding new pages, API endpoints, layouts, or route files.

RESTful API design principles, data modeling strategies, endpoint architecture, authentication patterns, and best practices for building scalable, maintainable backend APIs. Covers REST conventions, HTTP methods, status codes, and database schema design.

Design RESTful APIs with proper HTTP methods, status codes, pagination, filtering, error responses, and OpenAPI documentation. Follows FastAPI best practices with Pydantic validation.

Reference for PDA Engine taxonomy mapping domain. Use when working with vendor product imports, CSV imports, taxonomy structures, category/attribute mappings, state hash change detection, or understanding the vendor→internal→marketplace mapping flow. Covers data models, workflows, API endpoints, and PostgreSQL bulk insert patterns.

Create new Next.js API routes following project patterns. Use when user mentions "new endpoint", "add API", "create route", or "POST/GET handler".

ALWAYS apply this skill for ANY software development task. Triggers: implement, create, build, add, write, code, function, class, component, API, feature, fix, bug, debug, refactor, improve, clean, review, check, design, architect, structure, test, endpoint, module, service, handler, controller, model, schema, migration, deploy, configure. This skill enforces kadoppe's development principles for all coding work.

REST API design patterns and MicroProfile OpenAPI documentation. Use when designing endpoints, choosing HTTP methods, status codes, or documenting APIs with OpenAPI annotations.

Convert Windev (WLanguage) systems to Go, including procedures, functions, web services, and file operations. Handles initialization code, service endpoints, and database operations. Uses Gin for APIs and Zap for logging. Maintains descriptive comments while ignoring commented code.

Next.js API route development patterns for the digital marketplace including authentication, error handling, validation, and RESTful conventions. Use when creating new API endpoints or modifying existing routes.

Implement REST APIs in ABP Framework with AppServices, DTOs, pagination, filtering, and authorization. Use when building API endpoints for ABP applications.

Review test cases for OAuth/OIDC error handling. Covers authorization endpoint errors, token endpoint errors, error response formats, HTTP status codes, and all error codes per OAuth 2.1 and OIDC Core 1.0.

Design and implement RESTful API endpoints following REST principles with resource-based URLs, appropriate HTTP methods, and consistent naming conventions. Use this skill when creating or modifying API route handlers, endpoint definitions, or REST controllers in files like routes.py, api.ts, controllers/, handlers/, or when implementing HTTP methods (GET, POST, PUT, PATCH, DELETE). Also applies when working on API versioning, request/response validation, status code handling, rate limiting, or any backend endpoint logic that serves HTTP requests to frontend clients or external systems.

Design and implement RESTful API endpoints following best practices for routing, versioning, and HTTP standards. Use this skill when creating or modifying API routes, controllers, or endpoints in files like routes/api.php, API controller files in app/Http/Controllers/Api/, controller files in app/Http/Controllers/, API resource classes, or when implementing REST API functionality. Use when working on URL structures, HTTP method handling (GET, POST, PUT, PATCH, DELETE), API versioning strategies, query parameter handling for filtering/sorting/pagination, HTTP status code responses, rate limiting configuration, or any API endpoint design decisions.

Complete TDD workflow for implementing business logic (use cases) and API endpoints that make tests pass. Covers Zod safeParse validation, async/await patterns, Next.js API routes, service orchestration, and Clean Architecture compliance.

Use when needing to search Slack message history, find past conversations, or retrieve channel messages - provides Slack Web API patterns for search.messages and conversations.history endpoints using WebFetch or curl

Expert knowledge of USA Spending API integration including filter building, award type codes, agency tiers, and API endpoints. Use when modifying API requests, adding search filters, debugging API responses, or extending search functionality.

Designs RESTful APIs following industry best practices for resource naming, HTTP methods, status codes, and error handling. Use when designing new APIs, refactoring existing endpoints, or establishing API standards.

Create API agents that wrap external HTTP services (n8n, LangGraph, CrewAI, OpenAI endpoints). Configure request/response transforms, webhook status tracking, A2A protocol compliance. CRITICAL: Request transforms use template variables ({{userMessage}}, {{conversationId}}, etc.). Response transforms use field extraction. Status webhook URL must read from environment variables.