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+## API Documentation
+___
+> Values required in **`bold`**.
+
+### **Accounts** | `account` 
+| field         | data type         | metadata                                            |
+| :-------------| :---------------- | :-------------------------------------------------- |
+| id            | unsigned integer  | primary key, auto-increments, generated by database |
+| username      | string            | required                                            |
+| email         | string            | required                                            |
+| password      | string            | required                                            |
+| timezone      | string            |                                                     |
+| earliest_time | string            |                                                     |
+| latest_time   | string            |                                                     |
+| created_at    | datetime          | generated by database                               |
+
+#### Add an account
+**`POST /api/account`**
+
+##### Request
+A json object for the user to register with **`username`**, **`email`**, **`password`**, `timezone`, `earliest_time` and `latest_time`.
+
+```
+{
+  "username": "jean,
+  "email": "jean@example.com",
+  "password": "really-strong-password",
+  "timezone": "Europe/Brussels",
+  "earliest_time":"09:30 AM",
+  "latest_time":"10:00 PM"
+}
+```
+
+##### Response
+A json object for the registered user with `id`, `username`, `email`, `timezone`, `earliest_time` and `latest_time`.
+
+```
+{
+  "id": 1,
+  "username": "jean",
+  "email": "jean@example.com",
+  "timezone": "Europe/Brussels",
+  "earliest_time":"09:30 AM",
+  "latest_time":"10:00 PM"
+}
+```
+
+#### Update an account
+**`PUT /api/account/:id`**
+
+##### Request
+A json object for the user to register with `id` and any of `username`, `email`, `password`, `timezone`, `earliest_time`, `latest_time`.
+
+```
+{
+  "id": 15,
+  "earliest_time":"08:30 AM",
+  "latest_time":"08:00 PM"
+}
+```
+
+##### Response
+A json object for the registered user with `id`, `username`, `email`, `timezone`, `earliest_time` and `latest_time`.
+
+```
+{
+  "id": 1,
+  "username": "jean",
+  "email": "jean@example.com",
+  "timezone": "Europe/Brussels",
+  "earliest_time":"09:30 AM",
+  "latest_time":"10:00 PM"
+}
+```
+
+#### Delete an account
+**`DELETE /api/account/:id`**
+
+##### Request
+A json object for the user to delete with `id`.
+
+```
+{
+  "id": 15
+}
+```
+
+##### Response
+A json object for the deleted user with `username` and `email`.
+
+```
+{
+  "username": "jean",
+  "email": "jean@example.com"
+}
+```
+
+#### Log in an account
+**`POST /api/account`**
+
+##### Request
+A json object for the user to login with either **`email`** or **`username`**, and **`password`** .
+
+```
+{
+  "username": "jean",
+  "password": "super-strong-password"
+}
+```
+
+##### Response
+A json object with the logged in user with `username` and `email`.
+
+```
+{
+  "id": 1,
+  "username": "jean",
+  "email": "jean@example.com",
+  "timezone": "Europe/Brussels",
+  "earliest_time":"09:30 AM",
+  "latest_time":"10:00 PM"
+}
+```
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