diff --git a/API.md b/API.md
index 0b0d9d4..596712c 100644
--- a/API.md
+++ b/API.md
@@ -1,7 +1,103 @@
-List of endpoints:
-- `/api/v1/videos`
-- `/api/v1/trending`
-- `/api/v1/top`
-- `/api/v1/channels/:ucid`
-- `/api/v1/channels/:ucid/videos`
-- `/api/v1/search`
+GET `/api/v1/videos/:id`
+> Given :id, return `video`  
+> Schema:  
+```
+{
+  "title": String,
+  "videoId": String,
+  "videoThumbnails": [
+    {    
+      "quality": String,
+      "url": String,
+      "width": Int32,
+      "height": Int32
+    },
+  ],
+
+  "description": String,
+  "descriptionHtml": String,
+  "published": Int64
+  
+  "keywords": Array(String),
+  "viewCount": Int64,
+  "likeCount": Int32,
+  "dislikeCount": Int32,
+  
+  "isFamilyFriendly": Bool,
+  "allowedRegions": Array(String),
+  "genre": String,
+ 
+  "author": String,
+  "authorId": String,
+  "authorUrl": String,
+
+  "lengthSeconds": Int32,
+  "allowRatings": Bool,
+  "rating": Float32,
+  "isListed": Bool,
+
+  "adaptiveFormats": [
+    {
+      "index": String,
+      "bitrate": String,
+      "init": String,
+      "url": String,
+      "itag": String,
+      "type": String,
+      "clen": String,
+      "lmt": String,
+      "projectionType": Int32,
+      "container": String,
+      "encoding": String,
+      "qualityLabel": String?,
+      "resolution": String?
+    },
+  ],
+  "formatStreams": [
+    {
+      "url": String,
+      "itag": String,
+      "type": String,
+      "quality": String,
+      "container": String,
+      "encoding": String,
+      "qualityLabel": String,
+      "resolution": String,
+      "size": String
+    }, 
+  ],
+  "captions": [
+    {
+      "label": String,
+      "languageCode": String
+    },
+  ],
+  "recommendedVideos": [
+    {
+      "videoId": String,
+      "title": String,
+      "videoThumbnails": [
+        {
+          "quality": String,
+          "url": String,
+          "width": Int32,
+          "height": Int32
+        },
+      ],
+      "author": String,
+      "lengthSeconds": Int32,
+      "viewCountText" String
+    }
+  ]
+}
+```
+
+GET `/api/v1/trending`
+
+GET `/api/v1/top`
+
+GET `/api/v1/channels/:ucid`
+
+GET `/api/v1/channels/:ucid/videos`
+
+GET `/api/v1/search`