Marqeta is a modern card-issuing and embedded-finance platform. The Core API is a large RESTful surface covering cards, users, businesses, GPA orders, KYC/KYB, fee transfer, transactions, real-time decisioning, MCC groups, programs, and webhooks. The Diva (Digital Wallets, Tokenization, 3DS) API extends the Core API.
APIs.json: https://raw.githubusercontent.com/api-evangelist/marqeta/refs/heads/main/apis.yml
- FinTech
- BaaS
- Card Issuing
- Payments
- Embedded Finance
- Created: 2026-05-08
- Modified: 2026-05-08
REST API for card issuing, user/business management, GPA funding, transactions, authorizations, real-time decisioning, KYC/KYB, MCC controls, programs, and webhooks. Customers operate within an isolated 'program' environment.
- Human URL: https://www.marqeta.com/docs/core-api
- Base URL:
https://sandbox-api.marqeta.com/v3
- REST
- Card Issuing
- Payments
- Documentation
- OpenAPI — OpenAPI Specification
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
REST API supplement for Digital Wallets (Apple Pay, Google Pay, Samsung Pay) tokenization, push provisioning, and 3-D Secure flows.
- Human URL: https://www.marqeta.com/docs/diva-api
- Base URL:
https://sandbox-api.marqeta.com/v3
- REST
- Digital Wallet
- Tokenization
- 3DS
- Documentation
- OpenAPI — OpenAPI Specification
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
Outbound HTTP webhook delivery for card events, authorization requests, advice messages, transactions, and account events.
- Human URL: https://www.marqeta.com/docs/core-api/event-types
- Base URL:
https://sandbox-api.marqeta.com/v3/webhooks
- Webhooks
- Documentation
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
Synchronous webhook-style HTTP endpoint customers expose for Marqeta to call during card authorization for approve/decline decisions.
- Human URL: https://www.marqeta.com/docs/core-api/real-time-decisioning
- Base URL:
customer-hosted
- Webhooks
- RTD
- Documentation
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
FN: Kin Lane Email: kin@apievangelist.com