diff --git a/backend/open_webui/utils/tools.py b/backend/open_webui/utils/tools.py
index b2f95a829..6a55a9536 100644
--- a/backend/open_webui/utils/tools.py
+++ b/backend/open_webui/utils/tools.py
@@ -697,9 +697,10 @@ def convert_openapi_to_tool_payload(openapi_spec):
                     "parameters": {"type": "object", "properties": {}, "required": []},
                 }
 
-                # Extract path and query parameters
                 for param in operation.get("parameters", []):
-                    param_name = param["name"]
+                    param_name = param.get("name")
+                    if not param_name:
+                        continue
                     param_schema = param.get("schema", {})
                     description = param_schema.get("description", "")
                     if not description:
@@ -971,8 +972,10 @@ async def execute_tool_server(
         body_params = {}
 
         for param in operation.get("parameters", []):
-            param_name = param["name"]
-            param_in = param["in"]
+            param_name = param.get("name")
+            if not param_name:
+                continue
+            param_in = param.get("in")
             if param_name in params:
                 if param_in == "path":
                     path_params[param_name] = params[param_name]
diff --git a/src/lib/apis/index.ts b/src/lib/apis/index.ts
index 8f35fbf88..92c28e1d9 100644
--- a/src/lib/apis/index.ts
+++ b/src/lib/apis/index.ts
@@ -449,8 +449,9 @@ export const executeToolServer = async (
 
 		if (operation.parameters) {
 			operation.parameters.forEach((param: any) => {
-				const paramName = param.name;
-				const paramIn = param.in;
+				const paramName = param?.name;
+				if (!paramName) return;
+				const paramIn = param?.in;
 				if (params.hasOwnProperty(paramName)) {
 					if (paramIn === 'path') {
 						pathParams[paramName] = params[paramName];
@@ -1674,7 +1675,7 @@ export interface ModelMeta {
 	profile_image_url?: string;
 }
 
-export interface ModelParams {}
+export interface ModelParams { }
 
 export type GlobalModelConfig = ModelConfig[];
 
diff --git a/src/lib/utils/index.ts b/src/lib/utils/index.ts
index 3577eb004..c4046f05d 100644
--- a/src/lib/utils/index.ts
+++ b/src/lib/utils/index.ts
@@ -1277,17 +1277,20 @@ export const convertOpenApiToToolPayload = (openApiSpec) => {
 				// Extract path and query parameters
 				if (operation.parameters) {
 					operation.parameters.forEach((param) => {
-						let description = param.schema.description || param.description || '';
-						if (param.schema.enum && Array.isArray(param.schema.enum)) {
-							description += `. Possible values: ${param.schema.enum.join(', ')}`;
+						const paramName = param?.name;
+						if (!paramName) return;
+						const paramSchema = param?.schema ?? {};
+						let description = paramSchema.description || param.description || '';
+						if (paramSchema.enum && Array.isArray(paramSchema.enum)) {
+							description += `. Possible values: ${paramSchema.enum.join(', ')}`;
 						}
-						tool.parameters.properties[param.name] = {
-							type: param.schema.type,
+						tool.parameters.properties[paramName] = {
+							type: paramSchema.type,
 							description: description
 						};
 
 						if (param.required) {
-							tool.parameters.required.push(param.name);
+							tool.parameters.required.push(paramName);
 						}
 					});
 				}