generated: '2026-07-18'
method: searched
source: https://developer.bill.com/docs/environmental-differences
docs: https://developer.bill.com/docs/api-sandbox-sign-up
description: >-
  The Divvy (BILL Spend & Expense) API is available in a dedicated BILL sandbox
  environment that is separate from production, with its own developer sign-up
  and sign-in. Test values are provisioned inside the sandbox rather than
  published as fixed magic numbers, so none are reproduced here.
environments:
  - name: sandbox
    separate_from_production: true
    signup: https://developer.bill.com/docs/api-sandbox-sign-up
    signin: https://developer.bill.com/docs/api-sandbox-sign-in
  - name: production
    docs: https://developer.bill.com/docs/production-bank-account-setup
differences_docs: https://developer.bill.com/docs/environmental-differences
notes:
  - Spend & Expense API testing requires a Spend & Expense API token (apiToken header).
  - Webhook subscriptions support a sendtestevent operation to deliver test notifications.
  - Test event notification fields are test-only values that cannot be reused in other operations.