fix: add error handling to api_call for better debugging

src/monarch_mcp_custom/server.py

@@ -266,8 +266,12 @@ async def api_call(method: str, params: str = "{}") -> str:
         parsed_params = json.loads(params) if params else {}
     except json.JSONDecodeError as e:
         return serialize_json({"error": f"Invalid JSON in params: {e}"})
-    result = await method_func(**parsed_params)
-    return serialize_json(result)
+    try:
+        result = await method_func(**parsed_params)
+        return serialize_json(result)
+    except Exception as e:
+        logger.error(f"api_call failed for method={method}: {e}")
+        return serialize_json({"error": str(e), "method": method})
 
 
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