Facebook/Instagram Ads API (lead capture)

Programmatic access to sync high-intent lead data from Meta’s native forms directly into your CRM or database in real time.

The Lead Ads API eliminates manual CSV exports by pushing user-submitted data (names, emails, and custom qualifying answers) straight to your stack via Webhooks. It supports 15+ field types and handles high-volume traffic from Facebook and Instagram placements without latency. By integrating directly with the Marketing API, developers can automate lead retrieval, trigger instant follow-up sequences, and track conversion events using the unique Lead ID for precise attribution.

https://developers.facebook.com/docs/marketing-api/guides/lead-ads