Healthie API integration guide: GraphQL, webhooks and Healthie Harbor

The short answer

Healthie is API-first. Its GraphQL API covers appointments, clients, charting and billing, with signed webhooks for events. Third parties build through the Healthie Harbor partner program, and each customer typically requests its own API key to switch your integration on. A certified FHIR R4 API exists as an add-on for Enterprise customers.

How access works

1. Apply to Healthie Harbor: who you are, mutual customers, what you integrate, prior EHR integrations, and HIPAA and SOC 2 status. Healthie prioritizes partners with existing customer overlap.
2. Pass a security review and sign the partnership agreement. Fees are defined in the agreement, not published.
3. Get documentation and sandbox credentials, build, then pass a technical review.
4. Customers activate you by requesting an API key from Healthie for your integration.

What the APIs cover

Our take

GraphQL plus webhooks makes Healthie quick to build on once you're in. The gate is commercial: Harbor favors partners whose customers already ask for them. If you're early, lead with a design-partner customer on Healthie.

FAQ

Does Healthie have an API?

Yes, a versioned GraphQL API with queries, mutations, subscriptions and webhooks.

How do I become a Healthie integration partner?

Apply to Healthie Harbor, pass a security and technical review, and sign the partnership agreement. Customers then request an API key to enable your integration.

Does Healthie support FHIR?

Yes, as a certified FHIR R4 add-on for Enterprise customers, with a typical setup of 4–6 weeks.

Sources

Public pages, accessed 11 Oct 2026: Healthie API docs · Become a partner · Healthie Harbor · Webhooks guide · Activating a marketplace partner · FHIR API add-on