diff --git a/.node-version b/.node-version
index 07533ba..9a2a0e2 100644
--- a/.node-version
+++ b/.node-version
@@ -1 +1 @@
-v20.11
+v20
diff --git a/README.md b/README.md
index 92ee74e..b442909 100644
--- a/README.md
+++ b/README.md
@@ -73,6 +73,10 @@ We welcome your contributions and PRs.
 
 [Configuration Docs](./docs/configuration.md)
 
+## 🔌 API
+
+[API Docs](./docs/api.md)
+
 ## 🙋🏻 FAQs
 
 [FAQs](./docs/faqs.md)
diff --git a/docs/api.md b/docs/api.md
new file mode 100644
index 0000000..7dbd60f
--- /dev/null
+++ b/docs/api.md
@@ -0,0 +1,53 @@
+# Sink API
+
+Writing API documentation manually can be very laborious, and we will automatically generate documents after the official release of [Nitro's OpenAPI](https://nitro.unjs.io/config#openapi).
+
+This place provides an example of creating a short link API. Other APIs are currently available for viewing through browser developer tools.
+
+## API Reference
+
+### Create Short Link
+
+```http
+  POST /api/link/create
+```
+
+| Header | Description                |
+| :----- | :------------------------- |
+| `authorization` | `Bearer SinkCool` |
+| `content-type` | `application/json` |
+
+#### Example
+
+```http
+  POST /api/link/create
+  HEADER authorization: Bearer SinkCool
+  HEADER content-type: application/json
+  BODY  {
+          "url": "https://github.com/ccbikai/Sink/issues/14",
+          "slug": "issue14"
+        }
+```
+
+The BODY data must be JSON.
+
+```http
+  RESPONSE 201
+  BODY  {
+          "link": {
+            "id": "xpqhaurv5q",
+            "url": "https://github.com/ccbikai/Sink/issues/14",
+            "slug": "issue14",
+            "createdAt": 1718119809,
+            "updatedAt": 1718119809
+          }
+        }
+```
+
+| Parameter | Type     | Description                |
+| :-------- | :------- | :------------------------- |
+| `id`     | `string` | This is automatically generated by Sink |
+| `url`    | `string`   | This is confirmation of the submitted URL and is required. |
+| `slug`  | `string` | This is slug generated by the system, either automatically or from the input (if provided) |
+| `createdAt`     | `timestamp` | This is automatically generated with a UNIX Timestamp. |
+| `updatedAt`     | `timestamp` | This is automatically generated with a UNIX Timestamp. |
diff --git a/package.json b/package.json
index 9eccaa8..0e4bf33 100644
--- a/package.json
+++ b/package.json
@@ -18,7 +18,7 @@
     "lint-staged": "lint-staged"
   },
   "engines": {
-    "node": ">=20.11.0"
+    "node": ">=20"
   },
   "dependencies": {
     "@unovis/ts": "^1.4.1",