# Ping the server

Source: https://developer.avalara.com/goods-calculation-en/authentication/ping_the_server/

After you set up your authentication method, use "ping" once to verify that the service is up.

-   Run the [Health API](https://api-gateway.sandbox.avalarabrasil.com.br/portal/health) to verify the portal status:  

    https://api-gateway.sandbox.avalarabrasil.com.br/portal/health

-   Run the [OAuth API](https://api-gateway.sandbox.avalarabrasil.com.br/oauth/health) to verify the OAuth status:  

    https://api-gateway.sandbox.avalarabrasil.com.br/oauth/health

-   Run [AvaTax Brazil API](https://avataxbr.sandbox.avalarabrasil.com.br/v3/ping) to verify AvaTax Brazil status:  
    https://avataxbr.sandbox.avalarabrasil.com.br/v3/ping

**Advice:**

-   You only need to use Ping once. If you want to periodically verify that the service is running, we recommend using a webhook and subscribe to [status.avalara.com](http://status.avalara.com/) instead of pinging multiple times. See the [Ping API](https://developer.avalara.com/api-reference/avatax/rest/v2/methods/Utilities/Ping/) for more details.
-   If you do run multiple Ping jobs, be sure that they run at least 5 minutes apart. If you do it in shorter periods, you may receive an error such as: "Hit Limit".