generated: '2026-06-20'
method: searched
source: https://learn.microsoft.com/en-us/graph/graph-explorer/graph-explorer-overview
note: >-
  Microsoft Graph has no card/token-style test values (it is not a payments API). Its
  sandbox surface is a tenant-based developer environment plus a hosted API explorer with
  sample data. No credentials are invented here; the facilities below are the published
  test/dev surfaces.
facilities:
- name: Graph Explorer
  type: hosted-api-explorer
  url: https://developer.microsoft.com/en-us/graph/graph-explorer
  note: >-
    Browser tool to run Excel/Graph requests. Works unauthenticated against a Microsoft-hosted
    sample tenant with seed data, or authenticated against your own tenant. Provides code
    snippets, permission consent, and sample queries including workbook operations.
- name: Microsoft 365 Developer Program
  type: sandbox-tenant
  url: https://developer.microsoft.com/en-us/microsoft-365/dev-program
  note: >-
    Free renewable Microsoft 365 E5 developer subscription (sandbox tenant) that can be
    provisioned with sample users, mailboxes, and files for building and testing Graph apps.
endpoints:
  production: https://graph.microsoft.com/v1.0
  beta: https://graph.microsoft.com/beta
  note: There is no separate sandbox host; test against a dev tenant or Graph Explorer's sample tenant on the same endpoints.