diff --git a/API/client-server/v1/login.md b/API/client-server/v1/login.md
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+POST /v1/login
+
+---
+
+Authenticates the user, and issues an access token for future requests.
+
+---
+
+## Request
+
+No request parameters or request body.
+
+---
+
+### 200 response
+
+|Name|Type|Description|
+|-|-|-|
+|identifier|string|User's gorb ID. One of identifier and email **must** be implemented|
+|email|string|User's email. One of identifier and email **must** be implemented|
+|password|string|**Required**: The user's password (we need to figure out how exactly we're hashing + salting it on the client)|
+|device_name|string|Name to help the user identify the device in their session list|
+
+```json
+{
+    "identifier": "radial_4740",
+    "password": "9r89mhs4czu4",
+    "device_name": "Laptop"
+}
+```
+
+---
+
+## Responses
+
+|Status|Description|
+|-|-|
+|200|Authentication successful|
+|400|The post request included poorly formated data|
+|403|Part of the cridentials are invalid.|
+
+---
+
+### 200
+
+|Name|Type|Description|
+|-|-|-|
+|access_token|string|**Required**: The access token that will be used for further authentication|
+|user_id|string|**Required**: The full gorb ID for the account|
+|expires_in|int|How many seconds until the token expires and is invalidated|
+
+```json
+{
+    "access_token": "gwLhWXD9wrqL3DwxXZ0VHUeOjr8am1yO",
+    "user_id": "@radial_4740:gorb.app",
+    "expires_in": 2592000
+}
+```
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