> ## Documentation Index
> Fetch the complete documentation index at: https://docs.junction.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Dexcom (OAuth based)

> Connect Dexcom CGM devices via the OAuth-based dexcom_v3 integration, including webhook behavior and custom OAuth credential setup.

<Note>
  `dexcom_v3` is the provider slug for Dexcom (OAuth based).<br />
  For the password-based `dexcom` integration, see [Dexcom (G6 and older)](./dexcom).
</Note>

<Info>
  Bring Your Own OAuth (BYOO) is available for [the Grow and Scale plans](https://tryvital.io/pricing).
  WHOOP BYOO is available for [the Launch, Grow and Scale plans](https://tryvital.io/pricing). See [our WHOOP Guide](/wearables/guides/whoop) for more information.
</Info>

## Connecting Dexcom to Junction

You can connect your Dexcom device to Junction through the Junction Link Widget or programmatically like any
other [OAuth](/api-reference/link/link-oauth-provider) provider.
We recommend you obtain custom OAuth credentials from [Dexcom](https://developer.dexcom.com) with production access and follow the guide
for [setting up custom credentials](/wearables/connecting-providers/bring-your-own-oauth/overview) to get started.

## Webhooks

On successful connection, you will receive a [Connection created](/event-catalog/provider.connection.created) webhook,
and subsequently, [Daily](/event-catalog/daily.data.glucose.created) and [Historical](/event-catalog/historical.data.glucose.created) Glucose webhooks.

The historical webhook informs you that the last **30 days** of data prior to connection is available and the daily webhooks follow the usual semantics
for all Junction daily webhooks.