OpenAPI MCP Server

import OASNormalize from "oas-normalize"; import Oas from "oas"; import { OASDocument } from "oas/types"; // Load OpenAPI file export async function loadOpenAPIFile(filePath: string) { if ( !( filePath.endsWith(".yaml") || filePath.endsWith(".yml") || filePath.endsWith(".json") ) ) { throw new Error("Unsupported file format. Use YAML or JSON."); } const oas = await new OASNormalize( filePath, { enablePaths: true } ).dereference(); return new Oas(oas as OASDocument); } // Extract GET operations from OpenAPI file export function extractReadOperations(openAPI: Oas) { return Object.values(openAPI.getPaths()) .filter((op) => op.get) .map((op) => op.get); } // Extract non-GET operations from OpenAPI file export function extractWriteOperations(openAPI: Oas) { const paths = openAPI.getPaths(); return Object.values(paths) .flatMap((path) => { const operations = []; if (path.post) operations.push(path.post); if (path.put) operations.push(path.put); if (path.patch) operations.push(path.patch); if (path.delete) operations.push(path.delete); return operations; }); }