topic Re: One way integration of JSON contact list into Hubspot in APIs & Integrations

One way integration of JSON contact list into Hubspot

rdegrand — Tue, 24 Jun 2025 20:02:54 GMT

We're wondering how to get a JSON file of contact records sent from another app integrated into Hubspot. We created a private app in HubSpot and have the access token, but the other application is asking for a URL as well.

Re: One way integration of JSON contact list into Hubspot

SteveHTM — Wed, 25 Jun 2025 00:02:24 GMT

@rdegrand - are you looking to code up the communication as a webhook? You can arrange a webhook trigger for a workflow that would accept JSON contact details for example.

Hope this is helpful.

Steve

Re: One way integration of JSON contact list into Hubspot

rdegrand — Wed, 25 Jun 2025 13:26:00 GMT

I believe that's what we want to do. (Sorry, this is all outside my scope of knowledge) How do I know what target URL to use for the Webhook?

Thank you so much for your help.

Re: One way integration of JSON contact list into Hubspot

rdegrand — Wed, 25 Jun 2025 14:15:15 GMT

Also, I looked into creating a workflow to receive a webhook from an external app, but we do not have Operations Hub Professional. I'm just confused as Hubspot told us that an integration would be easy using an API key, but now it seems we need extra tools. Any ideas? Thanks again.

Re: One way integration of JSON contact list into Hubspot

SteveHTM — Wed, 25 Jun 2025 16:09:59 GMT

@rdegrand - I have to say that I'm not optimistic that you will find ways to manipulate JSON data in this integration without access to Ops Hub functionality. For me, Ops Hub is a bed rock of functionality for this kind of task - whether the data comes through an API call, a Webhook, or attached to an email.

I will continue to ponder, but I do suggest you explore this as an option.

Steve

Re: One way integration of JSON contact list into Hubspot

Jaycee_Lewis — Wed, 25 Jun 2025 17:21:18 GMT

Hey, @rdegrand 👋 Thanks for the great question. I think one issue here is that “easy” is a relative term in this context. The “easy” part is getting the secure credential (the token); the more involved part is building the communication bridge between the two systems.

Think of it this way: your Private App's access token is the key to your HubSpot account, but the other application still needs an address (a URL) to send the data to. A key without a door is not enough to get in.

@SteveHTM's advice is spot on. He's pointing out that you require a way to receive the incoming data (a “webhook”). In HubSpot, the built-in tool for creating these webhook URLs and processing the data is part of Operations Hub Professional. This is why you've hit a wall—without it, HubSpot isn't set up to listen for the JSON data the other app wants to send.

Anytime you work with APIs, even with simplified authentication, there's a technical setup required to tell the systems how to talk to each other.

Building on his advice, I think you have at least three options:

Find an Existing App: Check the HubSpot App Marketplace first. There may already be a pre-built integration for the app you're using.
Use a Connector Tool (Probably best fit if not going Operations Hub😞 Services like Make or Zapier can act as the bridge. They will give you a URL to provide to the other app and will handle the process of receiving the JSON data and creating contacts in HubSpot for you, no code required.
Hire a Developer: A developer can build a simple “middleware” application that provides the URL and uses the HubSpot API to process the data, but this is the most technical and costly option.

For most users in your situation, using Make or Zapier is the fastest and easiest way to solve this problem.

Talk soon! — Jaycee

Re: One way integration of JSON contact list into Hubspot

GRajput — Thu, 26 Jun 2025 07:03:32 GMT

Hi @rdegrand

"You can use this API endpoint to create contacts in batches. Here is the endpoint

https://api.hubapi.com/crm/v3/objects/contacts/batch/create

here is the link to the doc -

https://developers.hubspot.com/docs/reference/api/crm/objects/contacts#post-%2Fcrm%2Fv3%2Fobjects%2Fcontacts%2Fbatch%2Fcreate

You can create contacts in batches or individually as per your requirement, but I suggest you use the bulk API to create contacts. "

I hope this will help you out. Please mark it as Solution Accepted and upvote to help another Community member.

Thanks!