generated: '2026-07-21'
method: searched
source: https://docs.tread.ai/api-reference/introduction
summary: >-
  Tread provides a per-customer sandbox environment for the Horizon API. Access is provisioned
  on request rather than self-serve, and there is no public set of magic test values / test cards
  (Tread is a dispatch/logistics TMS, not a card acquirer).
provisioning:
  self_serve: false
  request_via: developers@tread.io
  note: 'Sandbox access is provisioned per customer; email developers@tread.io to request a sandbox account.'
test_vs_live:
  separation: 'Separate sandbox account/credentials; single production host is https://api.tread-horizon.com.'
  key_prefixes: null
m2m_credentials:
  note: 'Machine-to-machine Client ID/Secret for the OAuth2 client-credentials grant are issued on request (developers@tread.io).'
test_values:
  cards: null
  bank_accounts: null
  note: 'No published magic/test identifiers; sandbox uses the customer''s provisioned test data.'
webhook_testing:
  note: 'Webhook subscriptions include a "Send test" button in Settings -> Integrations -> Webhooks to verify endpoint receipt/verification.'