Groweo’s GET API lets you import contacts stored in Groweo® Contacts into HubSpot without transferring data manually.

The integration retrieves contacts from Groweo using an API token and creates or updates the corresponding contacts in HubSpot.

The Groweo API is read-only. It cannot be used to create, edit or delete contacts in Groweo. Groweo does not automatically push contact data to HubSpot either, so the integration retrieves the data from Groweo.

There are two main ways to build the integration:

HubSpot Workflows + Custom code
an external integration using the HubSpot API

A HubSpot-based implementation can work well when your subscription includes Custom code and the amount of data is manageable. For larger contact volumes or more advanced requirements, an external integration provides more flexibility.

Before you start

You will need:

a Groweo API token
access to HubSpot integration and property settings
a field mapping between Groweo and HubSpot
credentials for the HubSpot API
a HubSpot subscription that supports Custom code if you choose the workflow-based approach.

1. Get your Groweo API token

Ask your Groweo contact person or Groweo Customer Support for your API token.

The contacts endpoint is:

GET https://engine.groweo.com/engine/api/client-api/contacts

For example:

?page=1&limit=50&populateModuleData=true

Pass the token in the HTTP header:

x-client-api-token: <API_TOKEN>

Test the request with a tool such as Postman before building the HubSpot integration. This lets you inspect the JSON returned by your Groweo environment and decide which fields you want to transfer.

2. Create a Groweo ID property in HubSpot

If the Groweo API response contains a stable unique contact identifier, use it to match contacts between the two systems.

Create a Contact property in HubSpot, for example:

Groweo ID

with an internal name such as:

groweo_id

Configure the property values as unique.

The integration can then use Groweo ID to determine whether to update an existing contact or create a new one.

Note: First verify that the Groweo API response contains a stable identifier suitable for this purpose.

Option 1: HubSpot Workflows + Custom code

HubSpot’s Custom code workflow action can run JavaScript or Python and make HTTP requests to external services such as the Groweo API.

3. Store the Groweo API token as a secret

Do not include the Groweo API token directly in your code.

Add it to the Custom code action’s Secrets settings, for example as:

GROWEO_API_TOKEN

Your code can then access the token as an environment variable.

4. Retrieve contacts from Groweo

A simplified JavaScript request could look like this:

exports.main = async (event, callback) => {

  const groweoToken = process.env.GROWEO_API_TOKEN;

  const response = await fetch(
    'https://engine.groweo.com/engine/api/client-api/contacts' +
    '?page=1&limit=50&populateModuleData=true',
    {
      method: 'GET',
      headers: {
        'x-client-api-token': groweoToken
      }
    }
  );

  if (!response.ok) {
    throw new Error(
      `Groweo API returned ${response.status}`
    );
  }

  const data = await response.json();

  console.log(data);

  callback({
    outputFields: {
      success: true
    }
  });
};

For the first test, retrieve the data without building the full mapping. Inspect the JSON response before deciding how to process it.

5. Define the field mapping

A possible mapping could include:

Groweo data	HubSpot
unique contact identifier	Groweo ID
first name	First name
last name	Last name
email address	Email
phone number	Phone number
company name	Company name

This is an example of a possible mapping, not documentation of Groweo’s API response schema.

If populateModuleData=true returns module-specific data you need, you can create corresponding custom Contact properties in HubSpot.

6. Create or update contacts in HubSpot

HubSpot’s CRM API supports batch upsert, allowing several contacts to be created or updated in one request.

When groweo_id is configured as a unique property, the logic can be:

Groweo ID exists in HubSpot
        ↓
update contact

Groweo ID does not exist
        ↓
create contact

A conceptual request looks like this:

{
  "inputs": [
    {
      "id": "GROWEO_CONTACT_ID",
      "idProperty": "groweo_id",
      "properties": {
        "firstname": "Example",
        "lastname": "Contact",
        "email": "example@example.com",
        "phone": "+358401234567"
      }
    }
  ]
}

The values and fields above are illustrative. Adapt the mapping to the actual data returned by Groweo.

7. Handle Groweo pagination

The Groweo API uses pagination:

?page=1&limit=50

If there are more contacts, retrieve the following pages as well.

Determine when to stop from the actual pagination information returned by the API rather than assuming a particular response field.

8. Schedule the synchronisation

HubSpot workflows can be triggered on a schedule. A recurring daily, weekly or monthly workflow currently requires HubSpot Data Hub Professional or Enterprise.

A typical flow is:

Scheduled HubSpot Workflow
        ↓
Custom code
        ↓
Groweo GET API
        ↓
contact processing
        ↓
HubSpot CRM

Remember that scheduled HubSpot workflows operate on CRM records. Design the workflow so that the integration runs only once for each intended synchronisation.

Option 2: External integration

For larger data volumes or more advanced requirements, the synchronisation can run in an external service, such as a Node.js or Python application or a scheduled cloud function.

The flow is:

Scheduled integration
        ↓
Groweo GET API
        ↓
contact processing
        ↓
HubSpot CRM API
        ↓
batch upsert

9. Authenticate with HubSpot

For a new system-to-system integration, use HubSpot’s current authentication option intended for this type of API access, such as a Service Key where available in your HubSpot account.

Store the credential securely in the integration environment rather than in source code.

If you already have an existing HubSpot Private App integration, check its current support and migration requirements in your HubSpot environment before making changes.

10. Process all Groweo contacts

The external integration should:

retrieve the first Groweo contact page
map Groweo data to HubSpot properties
send the contacts to HubSpot
retrieve the next Groweo page
continue until all relevant contacts have been processed.

Using a stable Groweo contact identifier as the HubSpot unique property helps prevent duplicate contacts.

How the integration works

GROWEO®
   │
   │ GET
   ▼
Contacts API
   │
x-client-api-token
   │
   ▼
Integration
   │
field mapping
   ▼
HubSpot CRM API
   │
batch upsert
   ▼
HUBSPOT CRM

Import Groweo® contacts into HubSpot via API