diff --git a/packages/llms/src/OpenAIClient.ts b/packages/llms/src/OpenAIClient.ts
index be6f3af..9fe44b9 100644
--- a/packages/llms/src/OpenAIClient.ts
+++ b/packages/llms/src/OpenAIClient.ts
@@ -145,7 +145,7 @@ export class OpenAIClient implements LLMClient {
 		const argString = normalizedChoice.message?.tool_calls?.[0]?.function?.arguments
 		if (!argString) {
 			throw new InvokeError(
-				InvokeErrorType.NO_TOOL_CALL,
+				InvokeErrorType.INVALID_TOOL_ARGS,
 				'No tool call arguments found',
 				normalizedData
 			)
diff --git a/packages/page-agent/src/utils/autoFixer.ts b/packages/page-agent/src/utils/autoFixer.ts
index e9bf91a..698b36f 100644
--- a/packages/page-agent/src/utils/autoFixer.ts
+++ b/packages/page-agent/src/utils/autoFixer.ts
@@ -120,9 +120,9 @@ function safeJsonParse(input: any): any {
 }
 
 /**
- * Retrieve the JSON part from a string.
- * - treat content between the first `{` and the last `}` as JSON.
- * - try to parse as JSON, return the parsed result if successful, otherwise return null.
+ * Extract and parse JSON from a string.
+ * - Treat content between the first `{` and the last `}` as JSON.
+ * - Try to parse that content as JSON and return the parsed value (object/array/primitive) if successful, otherwise return null.
  */
 function retrieveJsonFromString(str: string): any {
 	try {