Dexcom Events API

openapi: 3.0.3
info:
  title: Dexcom Developer Alerts Events API
  version: v3
  description: The Dexcom Developer API provides authorized third-party applications with read access to a Dexcom user's continuous glucose monitoring (CGM) data. Resources include estimated glucose values (EGVs), calibrations, events, alerts, devices, and data range. The API uses OAuth 2.0 authorization code flow and exposes separate sandbox and production environments.
  contact:
    name: Dexcom Developer Program
    url: https://developer.dexcom.com/
  termsOfService: https://developer.dexcom.com/terms-of-use
  x-generated-from: documentation
  x-source-url: https://developer.dexcom.com/docs/dexcomv3/endpoint-overview
  x-last-validated: '2026-05-05'
servers:
- url: https://api.dexcom.com
  description: Production (United States)
- url: https://api.dexcom.eu
  description: Production (Europe / International)
- url: https://api.dexcom.jp
  description: Production (Japan)
- url: https://sandbox-api.dexcom.com
  description: Sandbox (Development)
security:
- OAuth2: []
tags:
- name: Events
  description: User-entered events such as carbohydrate intake, insulin doses, exercise, and health events.
paths:
  /v3/users/self/events:
    get:
      tags:
      - Events
      operationId: getEventsV3
      summary: Get User-Entered Events
      description: Retrieve user-entered event records (carbohydrates, insulin, exercise, and health events) between `startDate` and `endDate`.
      parameters:
      - $ref: '#/components/parameters/StartDate'
      - $ref: '#/components/parameters/EndDate'
      responses:
        '200':
          description: Successful events retrieval.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/EventsResponse'
              examples:
                GetEventsV3200Example:
                  summary: Default getEventsV3 200 response
                  x-microcks-default: true
                  value:
                    recordType: event
                    recordVersion: '3.0'
                    userId: 35d77a14-243f-4d5d-9f3f-3b3a7d7e9c3a
                    records:
                    - recordId: 9b2e4f78-9aa4-4f10-aa01-2c0d1e7f0001
                      systemTime: '2026-04-30T12:30:00'
                      displayTime: '2026-04-30T05:30:00'
                      eventType: carbs
                      eventSubType: null
                      value: 45
                      unit: grams
                      eventStatus: created
                      transmitterId: 8GA1JK
                      transmitterGeneration: g7
                      displayDevice: iOS
                    - recordId: 9b2e4f78-9aa4-4f10-aa01-2c0d1e7f0002
                      systemTime: '2026-04-30T12:35:00'
                      displayTime: '2026-04-30T05:35:00'
                      eventType: insulin
                      eventSubType: fastActing
                      value: 4.5
                      unit: units
                      eventStatus: created
                      transmitterId: 8GA1JK
                      transmitterGeneration: g7
                      displayDevice: iOS
      x-microcks-operation:
        delay: 0
        dispatcher: FALLBACK
components:
  schemas:
    EventRecord:
      type: object
      properties:
        recordId:
          type: string
        systemTime:
          $ref: '#/components/schemas/DateTime'
        displayTime:
          $ref: '#/components/schemas/DateTime'
        eventType:
          $ref: '#/components/schemas/EventType'
        eventSubType:
          type: string
          nullable: true
          description: For example `fastActing` or `longActing` for `insulin`, or `light` / `medium` / `heavy` for `exercise`.
        value:
          type: number
          nullable: true
        unit:
          type: string
          nullable: true
          description: Unit appropriate to `eventType` (e.g. `grams`, `units`, `minutes`).
        eventStatus:
          $ref: '#/components/schemas/EventStatus'
        transmitterId:
          type: string
          nullable: true
        transmitterGeneration:
          $ref: '#/components/schemas/TransmitterGeneration'
        displayDevice:
          type: string
          nullable: true
    TransmitterGeneration:
      type: string
      enum:
      - unknown
      - g4
      - g5
      - g6
      - g6+
      - dexcomPro
      - g7
    DateTime:
      type: string
      format: date-time
      description: ISO 8601 timestamp.
    EventStatus:
      type: string
      enum:
      - created
      - updated
      - deleted
    EventType:
      type: string
      enum:
      - unknown
      - carbs
      - insulin
      - exercise
      - health
      - bloodGlucose
      - notes
    EventsResponse:
      type: object
      properties:
        recordType:
          type: string
          example: event
        recordVersion:
          type: string
          example: '3.0'
        userId:
          type: string
        records:
          type: array
          items:
            $ref: '#/components/schemas/EventRecord'
  parameters:
    StartDate:
      name: startDate
      in: query
      required: true
      description: ISO 8601 timestamp for the start of the query window (UTC, no offset).
      schema:
        type: string
        format: date-time
        example: '2026-04-01T00:00:00'
    EndDate:
      name: endDate
      in: query
      required: true
      description: ISO 8601 timestamp for the end of the query window (UTC, no offset). Must be no more than 30 days after `startDate`.
      schema:
        type: string
        format: date-time
        example: '2026-04-30T23:59:59'
  securitySchemes:
    OAuth2:
      type: oauth2
      description: Dexcom uses OAuth 2.0 authorization code flow. The only acceptable scope value is `offline_access`.
      flows:
        authorizationCode:
          authorizationUrl: https://api.dexcom.com/v2/oauth2/login
          tokenUrl: https://api.dexcom.com/v2/oauth2/token
          refreshUrl: https://api.dexcom.com/v2/oauth2/token
          scopes:
            offline_access: Long-lived access to the user's CGM data via refresh tokens.