input schema判断逻辑修改

Author: relat-ivity

framework/fel/java/plugins/tool-mcp-server/src/main/java/modelengine/fel/tool/mcp/server/DefaultMcpServer.java

@@ -148,9 +148,8 @@ public void onToolAdded(String name, String description, Map<String, Object> par
             return;
         }
         if (!(parameters.get(TYPE) instanceof String)
-                || !(parameters.get(PROPERTIES) instanceof Map)
-                || !(parameters.get(REQUIRED) instanceof List)) {
-
+                || parameters.get(PROPERTIES) != null && !(parameters.get(PROPERTIES) instanceof Map)
+                || parameters.get(REQUIRED) != null && !(parameters.get(REQUIRED) instanceof List)) {
             log.warn("Invalid parameter schema. [toolName={}]", name);
             return;
         }