diff --git a/API.md b/API.md
index 585abf3fd..46b3da236 100644
--- a/API.md
+++ b/API.md
@@ -973,6 +973,197 @@ return:
 }
 ```
 
+### Audio
+
+- GET `/audio/info`
+
+```json
+{
+  "host": "ip-address",
+  "version": "1",
+  "latest_version": "2",
+  "audio": {
+    "card": [
+      {
+        "name": "...",
+        "index": 1,
+        "driver": "...",
+        "profiles": [
+          {
+            "name": "...",
+            "description": "...",
+            "active": false
+          }
+        ]
+      }
+    ],
+    "input": [
+      {
+        "name": "...",
+        "index": 0,
+        "description": "...",
+        "volume": 0.3,
+        "mute": false,
+        "default": false,
+        "card": "null|int",
+        "applications": [
+          {
+            "name": "...",
+            "index": 0,
+            "stream_index": 0,
+            "stream_type": "INPUT",
+            "volume": 0.3,
+            "mute": false,
+            "addon": ""
+          }
+        ]
+      }
+    ],
+    "output": [
+      {
+        "name": "...",
+        "index": 0,
+        "description": "...",
+        "volume": 0.3,
+        "mute": false,
+        "default": false,
+        "card": "null|int",
+        "applications": [
+          {
+            "name": "...",
+            "index": 0,
+            "stream_index": 0,
+            "stream_type": "OUTPUT",
+            "volume": 0.3,
+            "mute": false,
+            "addon": ""
+          }
+        ]
+      }
+    ],
+    "application": [
+      {
+        "name": "...",
+        "index": 0,
+        "stream_index": 0,
+        "stream_type": "OUTPUT",
+        "volume": 0.3,
+        "mute": false,
+        "addon": ""
+      }
+    ]
+  }
+}
+```
+
+- POST `/audio/update`
+
+```json
+{
+  "version": "VERSION"
+}
+```
+
+- POST `/audio/restart`
+
+- POST `/audio/reload`
+
+- GET `/audio/logs`
+
+- POST `/audio/volume/input`
+
+```json
+{
+  "index": "...",
+  "volume": 0.5
+}
+```
+
+- POST `/audio/volume/output`
+
+```json
+{
+  "index": "...",
+  "volume": 0.5
+}
+```
+
+- POST `/audio/volume/{output|input}/application`
+
+```json
+{
+  "index": "...",
+  "volume": 0.5
+}
+```
+
+- POST `/audio/mute/input`
+
+```json
+{
+  "index": "...",
+  "active": false
+}
+```
+
+- POST `/audio/mute/output`
+
+```json
+{
+  "index": "...",
+  "active": false
+}
+```
+
+- POST `/audio/mute/{output|input}/application`
+
+```json
+{
+  "index": "...",
+  "active": false
+}
+```
+
+- POST `/audio/default/input`
+
+```json
+{
+  "name": "..."
+}
+```
+
+- POST `/audio/default/output`
+
+```json
+{
+  "name": "..."
+}
+```
+
+- POST `/audio/profile`
+
+```json
+{
+  "card": "...",
+  "name": "..."
+}
+```
+
+- GET `/audio/stats`
+
+```json
+{
+  "cpu_percent": 0.0,
+  "memory_usage": 283123,
+  "memory_limit": 329392,
+  "memory_percent": 1.4,
+  "network_tx": 0,
+  "network_rx": 0,
+  "blk_read": 0,
+  "blk_write": 0
+}
+```
+
 ### Auth / SSO API
 
 You can use the user system on homeassistant. We handle this auth system on