This content originally appeared on DEV Community and was authored by Serif COLAKEL
I’m thrilled to share my latest open-source project that bridges the gap between REST APIs and Large Language Models!
Swagger MCP Adapter is a TypeScript-based MCP (Model Context Protocol) server that seamlessly integrates Swagger/OpenAPI specifications with LLMs like Claude, enabling them to interact with your APIs through standardized tools.
Key Features:
4 Powerful MCP Tools:
-
list_services– Clean markdown-formatted API service listing -
get_service_information– Detailed info for specific endpoints -
get_all_service_information– Comprehensive API documentation -
get_cache_information– Cache monitoring & performance metrics
Production-Ready:
- Intelligent caching system with TTL-based expiration
- Optimized ESM builds for production deployment
- Full Claude Desktop integration
- Comprehensive error handling & logging
Developer Experience:
- Hot reloading during development
- TypeScript-first with full type safety
- Comprehensive test suite (6/6 tests passing)
- Clean, maintainable architecture
Real-World Impact:
This tool transforms how developers and LLMs interact with APIs:
- For Developers: Instant API exploration and documentation
- For LLMs: Structured, validated API interactions
- For Teams: Faster API integration and testing
Tech Stack:
TypeScript, Node.js, MCP SDK, Swagger Parser, Zod, Pino, tsup, Vitest
Perfect for:
- API documentation teams
- LLM application developers
- DevOps engineers
- Backend developers
- AI/ML engineers
Links:
- GitHub: https://github.com/serifcolakel/swagger-mcp-adapter
- Demo: Try with Claude Desktop, GitHub Copilot or any LLM!
- Demo Video on YouTube: https://www.youtube.com/watch?v=Alo34U5axbI
- Docs: Comprehensive README with setup guide
What do you think? Have you worked with MCP servers or API integration tools? I’d love to hear your thoughts! 
This content originally appeared on DEV Community and was authored by Serif COLAKEL