Allow additional properties and log 5xx errors

Signed-off-by: Marcos Candeia <marrcooos@gmail.com>

Author: mcandeia

apps/mesh/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@decocms/mesh",
-  "version": "1.0.0-alpha.44",
+  "version": "1.0.0-alpha.45",
   "description": "MCP Mesh - Self-hostable MCP Gateway for managing AI connections and tools",
   "license": "MIT",
   "author": "Deco team",

apps/mesh/src/api/app.ts

@@ -130,6 +130,19 @@ export function createApp(options: CreateAppOptions = {}) {
   // Request logging
   app.use("*", logger());
 
+  // Log response body for 5xx errors
+  app.use("*", async (c, next) => {
+    await next();
+    if (c.res.status >= 500) {
+      const clonedRes = c.res.clone();
+      const body = await clonedRes.text();
+      console.error(
+        `[5xx Response] ${c.req.method} ${c.req.path} - ${c.res.status}:`,
+        body,
+      );
+    }
+  });
+
   // ============================================================================
   // Health Check & Metrics
   // ============================================================================

apps/mesh/src/tools/connection/fetch-tools.ts

@@ -69,7 +69,10 @@ export async function fetchToolsFromMCP(
       name: tool.name,
       description: tool.description ?? undefined,
       inputSchema: tool.inputSchema ?? {},
-      outputSchema: tool.outputSchema ?? undefined,
+      outputSchema: tool.outputSchema
+        ? // We strive to have lenient output schemas, so allow additional properties
+          { ...tool.outputSchema, additionalProperties: true }
+        : undefined,
     }));
   } catch (error) {
     console.error(