From 4dd2ce82cd861e1f47b5a7ea6884044e24666283 Mon Sep 17 00:00:00 2001
From: Jurie Smit <smit.jurie@gmail.com>
Date: Mon, 8 Jun 2026 15:36:43 +0200
Subject: [PATCH] fix(mcp): serve streamable HTTP GET

---
 backend/src/mcp/server.ts | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/backend/src/mcp/server.ts b/backend/src/mcp/server.ts
index d148699..eb1cc42 100644
--- a/backend/src/mcp/server.ts
+++ b/backend/src/mcp/server.ts
@@ -60,7 +60,7 @@ function slugify(name: string): string {
 export function mcpRouter(pool: Pool): Router {
   const router = Router();
 
-  router.post('/', async (req: Request, res: Response) => {
+  const handleMcpHttpRequest = async (req: Request, res: Response, body?: unknown) => {
     const secret = process.env.MCP_SECRET;
     if (!secret) {
       return res.status(500).json({ error: 'MCP_SECRET not configured — endpoint disabled' });
@@ -1260,13 +1260,21 @@ export function mcpRouter(pool: Pool): Router {
     try {
       const transport = new StreamableHTTPServerTransport({ sessionIdGenerator: undefined });
       await server.connect(transport);
-      await transport.handleRequest(req, res, req.body);
+      await transport.handleRequest(req, res, body);
     } catch (err) {
       console.error('[MCP] Unhandled error in MCP request handler', { err: String(err) });
       if (!res.headersSent) {
         res.status(500).json({ error: 'MCP handler failed' });
       }
     }
+  };
+
+  router.post('/', async (req: Request, res: Response) => {
+    await handleMcpHttpRequest(req, res, req.body);
+  });
+
+  router.get('/', async (req: Request, res: Response) => {
+    await handleMcpHttpRequest(req, res);
   });
 
   return router;