> For the complete documentation index, see [llms.txt](https://integrations.impact.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://integrations.impact.com/agency-v3/readme/passthrough.md).

# Passthrough

The *Agencies* *API* includes a passthrough feature for agencies that manage Brand (or *Advertiser*) accounts on impact.com.

To access a managed brand account, you'll need:

* Your Agency `AccountSID` & `AuthToken` values
* The managed brand account's Account ID value (use the [Retrieve an Advertiser](broken://spaces/3an35NjrMgGKemtN6H10/pages/ff3982c431436da3564afbcb01af94c883ec51fe#get-agencies-accountsid-a-dvertiser-advertiseraccountid) endpoint to retrieve the `Id` value)

Requests append the Brand API endpoints to standard Agency API requests, like so:

```
https://api.impact.com/Agencies/<AccountSID>/Advertisers/<AdvertiserAccountID>/
```

Refer to the [Brand API documentation](/brand-api-reference/brand-api-reference-v13/readme/introduction.md) for details on using those endpoints. All brand endpoints are supported via the API passthrough.

#### Example request

{% tabs %}
{% tab title="cURL" %}

```bash
curl 'https://api.impact.com/Agencies/<AccountSID>/Advertisers/2747168/Campaigns' \
  -X GET \
  -u '<AccountSid>:<AuthToken>' \
  -H 'Accept: application/json'
```

{% endtab %}
{% endtabs %}


---

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