Data Sync Documentation for developer

Hello,

I’ve been looking for documentation on how to develop an app that works the same way as the other Data Sync apps.
Our customer has a custom developed ERP system and would like to sync their data bidirectionally with hubspot.
I have only found documentation on how to create an app, how to access Hubspot’s API and how to register for webhooks.
But nowhere can I find documentation on how to develop such a data sync app… So that this works exactly afterwards as described here: Connect and use HubSpot data sync

I hope someone here can help me or at least give me a hint.

Hi, @KSchuster :waving_hand: Thanks for reaching out. Let’s see if our community has any thoughts here. Hey @A_Wessolly @himanshurauthan @jonchim do you have any suggestions on how @KSchuster might think about this type of project?

Thank you for taking a look! — Jaycee

Any update on this? I have a similar requirement, i.e. integrating our team’s solution to HubSpot as a data sync.

Hello @KSchuster,

If you want a data sync app then, we have created an integration that syncs the data from WooCommerce to HubSpot. You can directly download it from here it is totally free.

If you want a custom integration my team can build it for you (it’ll be a chargeable service). Please free to schedule a meeting.

Regards,

Hello @himanshurauthan

thanks, but i mean these kinds of apps:

These apps all follow the same process when integrating with hubspot.
But as I have seen so far, there are no documentation for this. Because this app has been developed internally by hubspot.
The only way to get a sync would be to do it all through hubspot’s webhooks.

A Data Sync Integration app can be developed in a number of ways. For now, let’s say modules so you have to find the module details, like how you can hit the API because in integration the most important thing is API hitting, you can sync/fetch the data but hitting API only so here ( 2026-03 API reference - HubSpot docs & 2026-03 API reference - HubSpot docs) is an overview of the HubSpot’s API call and authentication things.

Please go through these docs, you will surely find something you need, and let me know if you have any queries.

I hope this helps!

Regards,