About API Trench
A developer-first platform built to simplify how APIs are converted, documented, and shared — starting with a universal API format converter.
Free Online API Converter — convert Postman collections, OpenAPI specs, and MCP definitions between formats (JSON or YAML). Supports OpenAPI 3, Postman to OpenAPI, OpenAPI to MCP, and more.
API Trench helps developers transform API specifications quickly: Postman ⇄ OpenAPI ⇄ MCP. No installation, instant conversion, schema validation included.
What it does
API Trench helps developers bridge the gap between different API specification formats. Our first tool — the web converter — seamlessly transforms between Postman, OpenAPI, and MCP formats. It’s lightweight, fast, and built to eliminate the manual hassle of switching between tools.
Key features
- Convert Postman, OpenAPI, and MCP formats instantly
- No installs or setup — use directly in your browser
- Fast, minimal, and developer-friendly interface
- Built to integrate with modern API workflows
What’s next
This is just the first trench in the API world. API Trench will expand into a complete API ecosystem — including automated documentation generation, an open API marketplace, and collaborative tools to streamline every stage of the API lifecycle.