A postback is a server-to-server communication method used to track conversions in real time. When a user completes an action (e.g., installs an app or makes a purchase), the tracking system sends a postback to GoKart, confirming that the event happened.
Postback Setup
To set this up, the postback URL must be placed in the advertiser’s tracking platform so their system can automatically "fire" or "call" it when a conversion is registered.
Example Postback URL:
https://api.getgokart.ai/postback?gk_click_id=TOBEREPLACED
Replace the capitalized portion (
TOBEREPLACED) with the advertiser’s click ID macro — this dynamically inserts the GoKart click ID that was passed in the tracking link.When the advertiser’s system fires this postback after a conversion, it sends the stored click ID back to GoKart, allowing the platform to match the conversion to the original user click and record it properly.
The postback URL GoKart receives from the advertiser must return the
gk_click_idthat was originally passed in the tracking link.
How Tracking Links & Postback URLs Work Together
Example Offer Tracking Link:
https://google.com?click_id={gk_click_id}Example Destination Link After Click:
https://google.com?click_id=efb2a7d2-c01a-4e3f-b8a1-81b4568e9f32
GoKart generates a unique click ID and the advertiser stores that click ID in their system under the
click_idparameter.In this example,
click_idis the advertiser’s parameter that receives GoKart’sgk_click_id
Example Postback URL:
https://api.getgokart.ai/postback?gk_click_id={click_id}Example Postback URL Returned Upon Conversion
https://api.getgokart.ai/postback?gk_click_id=efb2a7d2-c01a-4e3f-b8a1-81b4568e9f32
In this example, the advertiser returned the postback to GoKart with the same
gk_click_idvalue that was originally sent to them in theirclick_idparameter of the tracking link.In other words, GoKart passed its
gk_click_idto the advertiser in theirclick_idparameter, and when the conversion occurred, the advertiser sent that same value back to GoKart in thegk_click_idparameter.
Where is are my postbacks?
You can find your postback in several places:
Under your profile → Postback tab — select a supported tracking system from the dropdown
After saving your offer — the postback URL will be visible for you to copy into your tracking platform.
In Offer Management — click the 🔗 (hyperlink) button next to the offer to view and copy the postback URL.
Global Postback URL
GoKart supports a Global Postback URL, allowing advertisers to send all conversion events to a single endpoint instead of configuring individual postbacks for each offer.
The global postback automatically attributes conversions based on the gk_click_id included in the postback.
Once configured in the advertiser’s tracking system, this global postback will send conversions for all offers directly to GoKart without additional setup.
You can find your Global Postback URL in the Postback tab of your profile, or by clicking the Postback URL button in the top-right corner of the Offer Management section.