diff --git a/src/main/services/MCPService.ts b/src/main/services/MCPService.ts
index e2f1ce6f1e..0db4f43228 100644
--- a/src/main/services/MCPService.ts
+++ b/src/main/services/MCPService.ts
@@ -621,6 +621,9 @@ class McpService {
           } catch (e) {
             logger.error('args parse error', args)
           }
+          if (args === '') {
+            args = {}
+          }
         }
         const client = await this.initClient(server)
         const result = await client.callTool({ name, arguments: args }, undefined, {