diff --git a/ztools.api.d.ts b/ztools.api.d.ts
index c4628d1..7094c60 100644
--- a/ztools.api.d.ts
+++ b/ztools.api.d.ts
@@ -38,6 +38,10 @@ interface ZToolsAiOption {
   model?: string;
   messages: ZToolsAiMessage[];
   tools?: ZToolsAiTool[];
+  /** Extra request headers, passed as an object rather than a JSON string. */
+  headers?: Record<string, string>;
+  /** Extra OpenAI-compatible request body fields, passed as an object rather than a JSON string. */
+  extraBody?: Record<string, any>;
 }
 
 interface CookieFilter {