CGM Integration

What's Under the Hood

Here's what's powering LinkLoop right now — and what's next on the list.

Dexcom G7
✓ Active Integration
Nightscout
✓ Active Integration
⚡ Warrior View
  • →Connects Dexcom G7 via OAuth 2.0 (one-time)
  • →Syncs on demand — no background polling
  • →Current value, trend arrow, 24-hr history
  • →Manages Care Circle — invite / remove
  • →Sets personal high/low thresholds
👥 Care Circle Member View
  • →Joins via private invite code
  • →Read-only glucose view
  • →Current value, trend, recent history
  • →Cannot modify data or access tokens
  • →Cannot share data further

How It Works

1
Connect Your CGM
Authorize LinkLoop to access your CGM data via secure OAuth
→
2
Live Sync
Readings are fetched from Dexcom via encrypted API calls and instantly available to your whole Care Circle
→
3
∞
Share with Circle
Your entire Care Circle sees your latest numbers in real-time — no delay
→
4
Smart Alerts
AI-powered alerts notify the right people at the right time

CGM Integrations

LinkLoop connects to glucose data through two pathways — Dexcom's official API and Nightscout for broader CGM support.

🌙

Nightscout Integration

Warriors using CGMs beyond Dexcom can connect via their self-hosted or cloud Nightscout instance. Enter your Nightscout URL and a read-only API token — LinkLoop syncs your glucose data on demand, the same way Dexcom users sync. Care Circle members see the same live view regardless of which data source the warrior uses.

🔒

Privacy First

All data is encrypted in transit and at rest. Users control exactly who sees their glucose data. Privacy-first architecture. Data never sold to third parties.

Dexcom API — Exact Usage
Endpoint
GET /v3/users/self/egvs (Estimated Glucose Values)
Auth Method
OAuth 2.0 — Authorization Code flow
Scope
offline_access
Token Storage
Server-side only — never stored in or sent to the mobile app
Sync Model
User-initiated ("Sync Now") — no background polling
Data Stored
value (mg/dL), trend direction, trend arrow, timestamp
Not Stored
Dexcom username/password, device serial, raw Dexcom user ID
Other Endpoints
None — calibrations, devices, events not accessed

Apple Watch Architecture

New in v1.5.0 — a dedicated Watch companion app that fetches glucose data independently from the LinkLoop server.

6-digit Watch pairing screen
Pairing
Watch showing in-range glucose
In Range
Watch 3-hour glucose graph
3hr Graph
Watch showing active glucose alert
Alert Active
⌚ Watch App
  • →Pairs via secure 6-digit code
  • →Fetches glucose from LinkLoop server
  • →Works over Wi-Fi or cellular independently
  • →Current reading, trend arrow, recent history
  • →No Bluetooth or manual config required
🕐 Complications
  • →Circular / Corner — bold glucose + trend
  • →Rectangular — glucose, trend, timestamp
  • →Inline — compact "120↗ mg/dL · 2m"
  • →Auto-updates every 5 minutes
  • →Shows "--" when no data available