generated: '2026-07-20'
method: searched
source: https://developers.monzo.com/api/playground
type: Sandbox
name: Monzo API Playground
url: https://developers.monzo.com/api/playground
description: >-
  Monzo does not run a separate synthetic sandbox with fabricated test cards.
  Instead, developers use the Playground in the developer portal: after signing
  in with a real Monzo account and creating an OAuth client, the Playground
  issues an access token scoped to the developer's own account so requests can
  be tried live against api.monzo.com. Clients are created and managed at
  https://developers.monzo.com. No published, fabricated test credentials or
  test card numbers exist to capture.
client_types:
- confidential: Server-side clients that can hold a secret; receive refresh tokens.
- non-confidential: Public clients; must re-authenticate when the access token expires.
notes:
- Real-account, developer-scoped testing rather than a mocked test environment.
- Transaction history beyond 90 days requires ongoing SCA approval.