Outbound API (from D1)

Use outbound APIs when the D1 backend calls your issuer backend.

Use the interactive reference pages below for day-to-day integration. Download the OpenAPI specs only if you want to import them into your tooling.

Interactive API reference

• OAuth 2.0 API
• Consumer API
• 3DS API

Download OpenAPI specs

• D1-Public-OUT-v1-Auth2 (OAuth 2.0)
• D1-Public-OUT-v1-Consumer (End Users)
• D1-Public-OUT-v1-3DSecure (3DS)