Dexcom
Dexcom is a leading medical device company that develops, manufactures, and distributes continuous glucose monitoring (CGM) systems for people with diabetes. The company's wearable sensors stream real-time glucose data to mobile apps, dedicated receivers, and connected health platforms. Dexcom exposes a public developer program that lets approved third parties retrieve CGM data (estimated glucose values, events, calibrations, alerts, devices, and data range) through an OAuth 2.0 secured REST API, with a sandbox for development and a production environment for live patient data.
APIs
Dexcom Developer API
REST API for retrieving Dexcom continuous glucose monitoring data on behalf of authorized end users. Authentication is OAuth 2.0 authorization code flow; sandbox and production ...
Collections
Dexcom Developer API
OPENPricing Plans
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FinOps
Dexcom Finops
FINOPSFeatures
Retrieve estimated glucose values (EGVs) at 5-minute intervals across G6, G7, Dexcom ONE, and ONE+ systems.
Access user-logged carbs, insulin, exercise, and health events alongside CGM data.
Read fingerstick BG meter calibration entries for transmitters that require them.
Read CGM display device alerts (high, low, urgent low, rise, fall, no readings, out-of-range).
List the user's transmitters and display devices, including alert schedules and settings.
Discover earliest and latest record times for efficient incremental sync.
Production hosts in the US (api.dexcom.com), EU (api.dexcom.eu), and Japan (api.dexcom.jp).
Test against simulated CGM data without real Dexcom credentials at sandbox-api.dexcom.com.
Standards-based user consent and token issuance with offline_access (refresh) support.
Use Cases
Consumer apps that visualize glucose trends alongside insulin, food, and activity logs.
Provider tools that aggregate CGM data into time-in-range and ambulatory glucose profile (AGP) views.
Studies analyzing glycemic patterns, intervention response, or device performance across cohorts.
Health-coaching platforms correlating CGM signals with meals, workouts, and sleep.
LLM and agentic systems that reason over CGM history via MCP tools to recommend actions.
Aggregators (Apple Health, Validic, Tidepool, etc.) that ingest Dexcom data alongside other wearables.
Solutions
Latest-generation 10-day all-in-one disposable CGM with the smallest, thinnest sensor and direct-to-watch streaming.
10-day CGM with separate transmitter and sensor; widely supported across partner integrations.
Simplified CGM tier targeted at intermittent CGM users in select markets.
Over-the-counter glucose biosensor for non-insulin users (US).
Cloud reporting for patients and clinicians with AGP, time-in-range, and pattern recognition.