Create package.json

package.json

@@ -0,0 +1,13 @@
+{
+  "name": "vertex-claude-api",
+  "version": "1.0.0",
+  "description": "Vertex Claude API proxy",
+  "main": "app.js",
+  "dependencies": {
+    "express": "^4.17.1",
+    "node-fetch": "^2.6.1"
+  },
+  "scripts": {
+    "start": "node app.js"
+  }
+}