# Cielo 3DS 2.2 Authentication API

**Canonical:** https://apis.io/apis/cielo/cielo-3ds-api/  
**Provider:** Cielo — https://apis.io/providers/cielo/  
**Base URL:** https://mpi.braspag.com.br  
**Documentation:** https://developercielo.github.io/manual/3ds

Cielo 3DS 2.2 Authentication API is one of 13 APIs that [Cielo](https://apis.io/providers/cielo/) publishes on the [APIs.io](https://apis.io/) network. Tagged areas include 3D Secure, Authentication, Fraud Prevention, and Card Not Present. The published artifact set on APIs.io includes API documentation.

Cielo 3DS 2.2 is an EMVCo-compliant cardholder authentication service exposed via the Braspag MPI endpoint. It confirms that the buyer is the legitimate cardholder for card-not-present transactions on Visa, Mastercard, Elo, and Amex. Integrators call POST /v2/auth/token for a bearer token, then submit transactions through POST /1/sales using the ExternalAuthentication node (Cavv, Xid, ECI, Version, ReferenceID). Successfully authenticated transactions shift chargeback liability to the issuer.

## Machine-readable artifacts (2)

- **Documentation** — https://developercielo.github.io/manual/3ds
- **Sandbox** — https://mpisandbox.braspag.com.br

## Other Cielo APIs (12)

- [Cielo E-commerce API](https://apis.io/apis/cielo/cielo-ecommerce-api/)
- [Cielo Pix API](https://apis.io/apis/cielo/cielo-pix-api/)
- [Cielo Payment Link API](https://apis.io/apis/cielo/cielo-payment-link-api/)
- [Cielo Checkout API](https://apis.io/apis/cielo/cielo-checkout-api/)
- [Cielo Refunds API](https://apis.io/apis/cielo/cielo-refunds-api/)
- [Cielo Chargeback API](https://apis.io/apis/cielo/cielo-chargeback-api/)
- [Cielo Conciliador API](https://apis.io/apis/cielo/cielo-conciliador-api/)
- [Cielo Promo API](https://apis.io/apis/cielo/cielo-promo-api/)
- [Cielo LIO Remote Integration API](https://apis.io/apis/cielo/cielo-lio-remote-api/)
- [Cielo BIN Query API](https://apis.io/apis/cielo/cielo-bin-query-api/)
- [Cielo E-Wallets API](https://apis.io/apis/cielo/cielo-e-wallets-api/)
- [Cielo Tap on Phone](https://apis.io/apis/cielo/cielo-tap-on-phone/)

## Tags

3D Secure, Authentication, Fraud Prevention, Card Not Present

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/cielo/cielo-3ds-api/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/cielo/.