> For the complete documentation index, see [llms.txt](https://offerslook-api.gitbook.io/api-documentation/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://offerslook-api.gitbook.io/api-documentation/networkapi/offers/sub-resources/postback_url_of_offer.md).

# Postback URL

***Offer’s Postback URL, which is for advertisers to pass back data.***

**NOTE: Which types of postback url can be obtained is related to the types of conversion\_protocol.**

**If offer pricing type is CPC, there is no Postback URL.**

***New parameter, event\_id, is added to in this update. To compatible with last interface, the new interface can still acquire Postback, but it is restricted to the Postback corresponding to event\_id. If you want to acquire Postback corresponding to other event, please use new request interface.***

## Available methods <a href="#available-methods" id="available-methods"></a>

| Methods | HTTP method | Endpoint                                                                                                                                                                       | Description                                            |
| ------- | ----------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | ------------------------------------------------------ |
| **Get** |             |                                                                                                                                                                                |                                                        |
|         | GET         | [/v1/offers/{offer\_id}/postbacks](/api-documentation/networkapi/offers/sub-resources/postback_url_of_offer/get_information_about_a_specific_offers_post_back_url.md)          | Get information about a specific offer’s post back URL |
|         | GET         | [/v1/offers/{offer\_id}/offer\_events/{event\_id}/postbacks](/api-documentation/networkapi/offers/sub-resources/postback_url_of_offer/get_offers_post_back_url_by_event_id.md) | Get offer’s post back URL by event id                  |