Cielo Chargeback API
The Cielo Chargeback API gives merchants programmatic access to dispute lifecycle management. It uses OAuth 2.0 Client Credentials plus mTLS against the cielo-chargeback-sys-external service. Endpoints include paginated queries for pending and treated disputes, lifecycle searches by case ID, accept and refuse actions, and downloading both merchant support documents and issuer-uploaded evidence by establishment number and chargeback ID.