# AppId

Services in the cloud require an `appId` be passed to the service. The following services require an `appId`:

- Token (see auth)
- Medium (see media.json)
- Blackout (see validation)

## How To

The `appId` value can be specified on the config `metadata`:

    var player = TOP.createAndInitPlayer({
        config : {
            metadata : {
                appId : "<your-app-id-here>"
            }
        }
    };

The above `config` snippet will pass the configured `appId` value to all configured services that require it.