diff --git a/README.md b/README.md
index eb5529e..ca3e135 100644
--- a/README.md
+++ b/README.md
@@ -32,6 +32,16 @@ The document ID is: `1898f455874769eae009581b6bd97f192279bff4`
 
 You can find this ID in the URL of any Baidu Wenku document page. It's the string of characters between `/view/` and `.html` in the URL.
 
+## Test API
+
+A test API endpoint is available for testing PDF downloads:
+
+```
+https://lostjay.xyz/api/get_pdf?doc_id=6bb03e2669dc5022aaea00e5
+```
+
+**Important Note**: Only one PDF can be processed at a time. If the server is busy, you may receive a "Server is busy, please try again later" response.
+
 ## Prerequisites
 
 - Python 3.11 or higher
diff --git a/README_zh.md b/README_zh.md
index 5aee349..c418817 100644
--- a/README_zh.md
+++ b/README_zh.md
@@ -30,6 +30,16 @@ https://wenku.baidu.com/view/1898f455874769eae009581b6bd97f192279bff4.html
 
 您可以在任何百度文库文档页面的 URL 中找到此 ID。它是 URL 中 `/view/` 和 `.html` 之间的字符串。
 
+## 测试 API
+
+提供测试 API 端点用于测试 PDF 下载：
+
+```
+https://lostjay.xyz/api/get_pdf?doc_id=6bb03e2669dc5022aaea00e5
+```
+
+**重要提示**：同一时间只能处理一个 PDF。如果服务器繁忙，您可能会收到"Server is busy, please try again later"的响应。
+
 ## 环境要求
 
 - Python 3.11 或更高版本