The same API, hosted for you.

Get a key, load demo data and read your first FHIR Observation in minutes. We run the open source server, its Postgres, raw store and workers.

What the beta gives you today.

A developer portal on top of the open source server, so the path from sign-in to a real response is one sitting.

A key in a minute
Create a project and get its API key, shown once. During the beta: three projects per account, five keys per project.
Data on the first call
One click adds a synthetic user with 30 days from six sources, so your first request already returns sleep, heart rate and steps.
A checklist that ticks itself
First key, first call, first user, first data, first webhook. Each step comes with the command to copy.
Every output
REST with an OpenAPI file, FHIR R4, Open mHealth, CSV and Parquet, signed webhooks and the read-only MCP server.
A quickstart with your values
curl, TypeScript and Python, already filled in with your instance's address.
Example apps
iOS, Android and React Native apps, Python scripts and an AI agent over MCP, all from the open source repository.

Test data only, for now
Real user data opens once our data processing terms and the providers' production approvals are in place. Until then, use demo and synthetic users.
By invitation
We invite developers in small groups, so each one gets a setup that works and a direct line to us. The invitation is a link that creates your account.
Nothing to migrate
The hosted service runs the open source server. Code written for it moves to your own instance with a new base URL and key, and back.
Self-hosting stays first class
The server stays free under the AGPL-3.0. The hosted beta is an option, not a replacement.

One Go binary plus Postgres, on your laptop, a Raspberry Pi or any cloud. The quickstart takes about five minutes.