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In this guide, we will use curl to fetch the data catalog. This is the best way to verify that your API key and IP whitelisting are configured correctly.

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1. Prepare your API Key

Copy your Test Key from the VTULab Dashboard. It should look like test_....

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2. Construct the Request

We will call the GET /v1/vtu/data endpoint. This endpoint does not require any parameters and is used to retrieve available data plans. 
curl --request GET \
  --url https://api.vtulab.com/v1/vtu/data \
  --header 'Authorization: Bearer YOUR_TEST_KEY' \
  --header 'Accept: application/json'

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3. Analyze the Response

A successful response will return a 200 OK status and a JSON body containing networks and data_plans. 
{
  "status": true,
  "message": "Data catalog fetched successfully",
  "data": {
    "networks": [...],
    "data_plans": [...]
  }
}

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Common Issues

If your request fails, check the following:
Ensure you are passing the key correctly in the Authorization header as a Bearer token.
Verify that the IP address of the machine making the request is added to your whitelist in the VTULab Dashboard.
You have exceeded the rate limit. Wait a few seconds and try again.
Once you’ve successfully fetched the catalog, you’re ready to start Purchasing Data.