API Development

Comprehensive Polymarket skill covering prediction markets, API, trading, market data, and real-time WebSocket data streaming. Build applications with Polymarket services, monitor live trades, and integrate market predictions.

Auto-generate OpenAPI 3 documentation for Spring Boot 4.x REST APIs using springdoc-openapi v3.0. Use when API endpoints change, controllers are modified, or user mentions API docs, Swagger, or OpenAPI. Triggers on @RestController changes, documentation requests, endpoint additions. Requires Spring Boot 4.0+ and Java 17+.

Auto-generate OpenAPI 3 documentation for Spring Boot REST APIs using springdoc-openapi. Use when API endpoints change, controllers are modified, or user mentions API docs, Swagger, or OpenAPI. Triggers on @RestController changes, documentation requests, endpoint additions.

Master Python asyncio, concurrent programming, and async/await patterns for high-performance applications. Triggers: asyncio, async/await, coroutines, concurrent programming, async API, I/O-bound, websockets, background tasks, semaphores, async context managers Use when: building async APIs, concurrent systems, I/O-bound applications, implementing rate limiting, async context managers DO NOT use when: CPU-bound optimization - use python-performance instead. DO NOT use when: testing async code - use python-testing async module. Consult this skill for async Python patterns and concurrency.

Apply rigorous test-driven development methodology following the Red-Green-Refactor cycle (write failing test, implement minimal code to pass, refactor while staying green) that ensures tests genuinely verify behavior by requiring observed failure before implementation, preventing untested code and false-positive tests. Use this skill when implementing any new feature or functionality in any programming language, when fixing bugs or resolving defects in existing code, when refactoring code to improve design while preserving behavior, when adding new methods, functions, classes, or modules to a codebase, when modifying existing behavior or business logic, when writing code in any file that will be executed in production environments, when creating API endpoints, service methods, or controller actions, when implementing data validation, transformation, or processing logic, when building user interface components with testable behavior, when writing algorithms, calculations, or business rules, when integrating w

Systematically review completed code implementations against original plans, requirements, and coding standards to ensure quality, plan alignment, and best practices adherence. Use this skill after completing any significant implementation work including features, refactorings, bug fixes, or architectural changes, when a numbered step or phase from a planning document has been finished, after implementing multiple related functions or components that form a logical unit, when finishing work that was specified in a technical specification or design document, after making substantial changes to existing code or architecture, before creating pull requests to validate implementation quality, when completing API endpoints, service layers, or data access implementations, after implementing test suites for new functionality, when refactoring code to ensure no behavior was inadvertently changed, after integrating with external systems or third-party services, when finishing user-facing features to verify requirements

Design and implement RESTful API endpoints following REST principles with proper HTTP methods, status codes, and resource-based URLs. Use this skill when creating or modifying API endpoints, route handlers, controllers, or API configuration files. Apply when working on REST API design, endpoint implementations, API versioning, request/response handling, HTTP method routing (GET, POST, PUT, PATCH, DELETE), query parameter filtering, API rate limiting, or any file that defines API routes such as routes.py, api.js, controllers/, endpoints/, or API documentation files.

Use when working with Crystal language development including WebSocket communication, TLS/SSL configuration, HTTP frameworks, ORM operations, and high-performance concurrent systems.

Unit tests for REST controllers using MockMvc and @WebMvcTest. Test request/response mapping, validation, and exception handling. Use when testing web layer endpoints in isolation.

Generate comprehensive REST API documentation using SpringDoc OpenAPI 3.0 and Swagger UI in Spring Boot 3.x applications. Use when setting up API documentation, configuring Swagger UI, adding OpenAPI annotations, implementing security documentation, or enhancing REST endpoints with examples and schemas.

Provides correct Payload CMS v3 endpoint patterns and logger API usage. Use when writing or fixing REST API endpoints, custom handlers, or when encountering TypeScript errors with req.data, req.cookies, or logger calls.

Write functional tests for Symfony controllers and HTTP endpoints using WebTestCase, BrowserKit, and test clients

Design RESTful APIs following best practices for resource modeling, HTTP methods, status codes, versioning, and documentation. Use when creating new APIs, designing endpoints, or improving existing API architecture.

Schema conversion and type mapping between different formats. Use when converting OpenAPI to GraphQL, mapping data types, or transforming schema definitions.

REST API design patterns, endpoint creation, request/response handling, and HTTP methods. Use when creating REST APIs, designing endpoints, handling HTTP requests, or building web services.

Generate JSON schemas and OpenAPI specs using justfile tasks (just gen, just gen-*-schema). Use when user modifies dataset manifests, API definitions, adds/removes schema fields, or mentions code generation, schemas, OpenAPI specs. Outputs to docs/manifest-schemas/ and docs/openapi-specs/.

Expert on Decibel on-chain perpetual futures trading platform on Aptos. Covers trading engine, orderbook, TypeScript SDK, REST APIs, WebSocket streams, market data, position management, TWAP orders, and vault operations. Triggers on keywords decibel, perpetual futures, aptos trading, on-chain trading, decibel sdk, perps, orderbook, twap, market data, trading api.

Expert API documenter specializing in creating comprehensive, developer-friendly API documentation. Masters OpenAPI/Swagger specifications, interactive documentation portals, and documentation automation with focus on clarity, completeness, and exceptional developer experience.

Internal skill. Use cc10x-router for all development tasks.

REST API specialist for Rails applications. Use when building API endpoints, implementing serialization, API versioning, JWT authentication, or creating API documentation. Focuses on RESTful design, performance, and consistency.