generated: '2026-07-18' method: searched source: https://api-docs.appzen.com/environments.html notes: >- AppZen publishes a dedicated US sandbox environment for the Autonomous AP API, separate from production, reachable at its own host. EU sandbox and EU production are listed as "coming soon". Credentials (x-api-key, customer-id, customer-key) are issued per customer by AppZen Support; no self-serve or magic test values are published (AppZen is not a card acquirer, so there are no test card numbers). environments: - name: Sandbox US base_url: https://api.us.sandbox.appzen.com status: available - name: Production US base_url: https://api.appzen.com status: available - name: Sandbox EU base_url: null status: coming-soon - name: Production EU base_url: null status: coming-soon base_path: /dictionary-data-services credentials: issued_by: AppZen Support team headers: [x-api-key, customer-id, customer-key] test_values: []