API → MCP Server Generator
A real working tool that turns any OpenAPI 3.x JSON spec into a runnable Model Context Protocol server. The server-side fetcher downloads the spec, validates it, and extracts up to 15 endpoints with their parameters and bodies. A tightly-prompted LLM call then streams a complete src/index.ts using @modelcontextprotocol/sdk with stdio transport — one MCP tool per endpoint, JSON-Schema inputs derived from the OpenAPI parameter list, native fetch() with path interpolation, query, and body. Combine with `npm create mcp-server@latest` for the package boilerplate and you have a working MCP server for any HTTP API in under five minutes. Lives at /api-to-mcp.
Frontend
Backend
Database
Tools
- • Most APIs don't have MCP servers — engineers manually port each one, repeating the same plumbing
- • OpenAPI specs vary wildly in completeness, naming, and quirks; generating reliable tool code requires careful prompt design
- • Long specs blow LLM context budgets; choosing what to include is half the problem
- • Server-side OpenAPI fetcher + validator that strips the spec to just what a code generator needs
- • Tightly-scoped generator prompt that pins SDK imports, schema shape, fetch patterns — output streams as the model writes
- • Hard cap at 15 endpoints per generation with per-endpoint parameter slicing so context stays cheap
Working MCP server scaffold for any OpenAPI 3.x JSON spec in under a minute
Completes a coherent MCP toolkit alongside create-mcp-server (scaffolder) and portfolio-mcp (reference impl)
Demonstrates LLM-as-code-generator with structured prompting and streaming
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