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Authentication (v1)

All API requests require authentication using an API token.

Using Your Token

Include your token in the Authorization header:

curl -X POST "https://api.hginsights.com/data-api/v1/company/firmographic" \
  -H "Authorization: YOUR_API_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{"domain": "example.com"}'

Migrating to v2

v2 offers a simpler authentication model with entitlement-based tokens. See v2 Authentication.