feat: add startup diagnostics for debugging environment and library version

src/monarch_mcp_custom/server.py

@@ -26,6 +26,38 @@ logging.basicConfig(
 )
 logger = logging.getLogger(__name__)
 
+
+def run_startup_diagnostics():
+    """Print startup diagnostics for debugging."""
+    import monarchmoney
+    from monarchmoney import MonarchMoneyEndpoints
+
+    print("\n" + "=" * 50)
+    print("Monarch MCP Server - Startup Diagnostics")
+    print("=" * 50)
+
+    print(f"\n📦 Library Version: monarchmoney {monarchmoney.__version__}")
+
+    print(f"\n🔗 API Endpoints:")
+    print(f"   GraphQL: {MonarchMoneyEndpoints.getGraphQL()}")
+    print(f"   Login:   {MonarchMoneyEndpoints.getLoginEndpoint()}")
+
+    print(f"\n🔐 Environment Variables:")
+    env_vars = ['MONARCH_TOKEN', 'MONARCH_EMAIL', 'MONARCH_PASSWORD', 'MONARCH_MFA_SECRET']
+    for var in env_vars:
+        value = os.getenv(var)
+        if value:
+            masked = value[:8] + "..." if len(value) > 8 else "***"
+            print(f"   {var}: ✓ ({masked})")
+        else:
+            print(f"   {var}: ✗ (not set or empty)")
+
+    print("\n" + "=" * 50 + "\n")
+
+
+# Run startup diagnostics
+run_startup_diagnostics()
+
 # Initialize FastMCP
 mcp = FastMCP("Monarch Money Custom")