/**
* Vercel API route handler - catch-all route for MCP server
* Vercel passes the path segments as req.query.path (array or string)
*/
import type { VercelRequest, VercelResponse } from '@vercel/node';
import handler from '../src/httpServer.js';
export default async function vercelHandler(
req: VercelRequest,
res: VercelResponse
): Promise<void> {
// Reconstruct the URL path from Vercel's path parameter
// The [...path] catch-all receives path segments as req.query.path
const pathSegments = req.query.path;
let url = '/';
// If path segments exist, reconstruct the URL
if (pathSegments) {
if (Array.isArray(pathSegments)) {
// Multiple path segments: ['message'] or ['api', 'message']
url = '/' + pathSegments.join('/');
} else if (typeof pathSegments === 'string') {
// Single path segment: 'message'
url = '/' + pathSegments;
}
} else {
// No path segments means root path
url = '/';
}
// Remove any query string that might be in the original req.url
// Vercel sometimes includes ?path=... in req.url
if (req.url) {
const urlWithoutQuery = req.url.split('?')[0];
// If req.url already has a path, use it (but clean it)
if (urlWithoutQuery && urlWithoutQuery !== '/api' && urlWithoutQuery !== '/api/') {
url = urlWithoutQuery;
}
}
// Ensure URL starts with /
if (!url.startsWith('/')) {
url = '/' + url;
}
// Set the URL on the request object (Vercel's req is compatible with Node.js)
(req as any).url = url;
// Log for debugging
console.log(`[VERCEL] Reconstructed URL: ${url} from path segments:`, pathSegments);
// Call the original handler - Vercel's req/res are compatible with Node.js types
return handler(req as any, res as any);
}
