# API tester

> Use the API tester to visually compose an Update customer session, Update customer profile, or Track event CURL request using the Campaign Manager. This can be helpful when troubleshooting a campaign, instead of relying on external software like Postman.

> For the complete documentation index, see [llms.txt](https://docs.talon.one/llms.txt).

<FeatureAccessInfoBox/>

If you prefer using Postman, you can download the following collections:

- [Integration API collection](/docs/dev/integration-api/overview.md#integration-api-postman-collection)
- [Management API collection](/docs/dev/management-api/overview.md#management-api-postman-collection)

## Use the API tester

1. Select the **Customer session**, **Customer profile**, or **Event** tab.
1. Set a value for the fields of your choice.
   To understand the role of each field available on the page, see the following links:
   - [Integration API keys](/docs/product/applications/manage-api-keys.md)
   - [Update customer session][s] endpoint
   - [Update customer profile][p] endpoint
1. The curl request is updated automatically.
1. Click **Copy to clipboard** and paste and run the copied command in your terminal.

You can check the response in the [Integration API logs](/docs/product/account/logs/integration-api-logs.md).

## Related pages

- [Integration API overview](/docs/dev/integration-api/overview.md)

[s]: /integration-api#tag/Customer-sessions/operation/updateCustomerSessionV2
[p]: /integration-api#tag/Customer-profiles/operation/updateCustomerProfileV2