All integrations
Available in v0.1.0

Dexcom data, in your own stack.

Users connect their Dexcom account over OAuth. Open Health Sync pulls their estimated glucose values on a schedule and codes them as interstitial glucose in FHIR.

Read the setup guideAbout Open Health Sync
Source
Continuous glucose monitors
How the data arrives
Cloud API v3, OAuth 2.0 (scope offline_access), scheduled pulls.

What it collects.

Each record maps to the same model as every other source, with the provider, source and device it came from.

  • Estimated glucose values (EGVs), with trend and out-of-range status

How it works.

  1. 01

    The user connects

    Your server asks for a consent URL and sends the user to Dexcom. Tokens are stored encrypted.

  2. 02

    The server pulls

    A first backfill, then scheduled pulls, and webhooks where the provider sends them. Every raw payload is kept.

  3. 03

    You read one model

    Units, time zones and duplicates handled, served over REST, the read-only MCP server and FHIR R4.

Before you start.

  • Bring your own app from developer.dexcom.com. The sandbox is free; production use needs Dexcom's approval.
  • One region per instance: the US, the EU or Japan.
  • Readings reach the API 1 hour late in the US and 3 hours late elsewhere.
  • Events, calibrations and alerts aren't pulled yet.

Set it up.

Register your own Dexcom app, set its callback to <OHS_PUBLIC_URL>/oauth/dexcom/callback and put its credentials in .env. The guide has every step.

Terminal
# .envOHS_DEXCOM_CLIENT_ID=...OHS_DEXCOM_CLIENT_SECRET=...OHS_DEXCOM_REGION=...# Ask for a consent URL, then send the user to authorize_urlcurl -s -X POST $OHS/v1/users/$USER_ID/connections/dexcom \  -H "Authorization: Bearer $KEY" -H 'Content-Type: application/json' \  -d '{"redirect_uri":"https://app.example.org/connected"}'# Read what came incurl -s "$OHS/v1/users/$USER_ID/samples?type=blood_glucose" -H "Authorization: Bearer $KEY"

Questions.

Can I use Dexcom with Open Health Sync today?

Yes. The Dexcom connector ships in v0.1.0.

Do I need anything from Dexcom?

Bring your own app from developer.dexcom.com. The sandbox is free; production use needs Dexcom's approval.

Where does the data go?

Only to the server you run. Open Health Sync is self-hosted software, not a service: no account with us and no call home. Each user can be deleted with one call, raw files included.