# Balance

This method is called by THNDR to initialise or refresh the balance of a player in a game.

#### Endpoint

```url
GET {operatorURL}/thndr/users/{userId}/balance
```

#### Path Parameters

* `operatorURL` - Base URL of the Operator’s API.
* `userId` -  Player identifier on the Operator’s platform.

#### Query Parameters

* `sessionId` - The session ID provided by the operator during user authentication.
* `currency` - Player's wallet currency (read more in [currencies](https://docs.thndr.io/integration/server-webhooks/currencies "mention")).

#### Expected Response

```json
{
    "balance": 12050
}
```

* `balance` - Balance in the smallest unit of the currency (e.g., cents for USD, pence for GBP)

#### Signature Verification

Verify the request signature using userId as the request payload. More in the [request-signing](https://docs.thndr.io/integration/server-webhooks/request-signing "mention") section.