# POST /tokens/refresh
URL: https://developers.vsee.io/api/user-api/post/tokens/refresh
operationId: refreshToken
Auth: Account Code Only — Only requires the X-AccountCode header. No token needed.

Refresh access token

Use a refresh token to generate a new access token. A new refresh token is also returned for the next refresh.

Parameters:
- X-AccountCode (header, string, required) — Account code

Request body (application/x-www-form-urlencoded):
- refresh_token (string, required) — The refresh token from a previous login or refresh response

Example request:
```json
{
  "refresh_token": "6366a7018a39536a1ef4b63626f8e734"
}
```

Responses:
- 200 — New token pair
```json
{
  "data": {
    "user_id": "201",
    "user_type": "200",
    "token": "b21ab6cb871fa452a1193f0fbcf400d5",
    "expiry": 1426236055,
    "user": {
      "id": "201",
      "code": "55011c6c5b5c4aed99624956c0a801ee",
      "username": "member-201",
      "first_name": "Kristopher",
      "last_name": "Nieves (201)",
      "email": "an+user1@vsee.com",
      "dob": "1960-01-01",
      "gender": "Female"
    }
  }
}
```
- 401 — Unauthorized
```json
{
  "code": 404,
  "message": "Sorry, this page is not available."
}
```