OPEN RAMBO · VIRTUAL CARD ISSUING PLATFORM

Card Issuing API for Developers and Digital Platforms

Integrate product discovery, virtual card creation, funding, card controls, and transaction records through a scoped partner API.

Who this is for

Fintech developers, SaaS platforms, marketplaces, and digital businesses that issue cards on behalf of approved users.

Core capabilities

Supported USDT network funding and platform-wallet crediting
Database-configured card products, issuance fees, and minimum funding
Card top-up, freeze, unfreeze, close, and status controls
Separate platform-wallet and issuer-side card transaction records
Scoped issuing API access with idempotent mutations

Operating workflow

Create an account

Complete the required account and business information in the secure workspace.

Fund the platform wallet

Use only the supported network and current address shown in the account.

Select a card product

Review the fee, minimum funding, usage notes, and live status.

Issue and fund the card

Wallet deductions and card credits are recorded separately.

Use at a supported merchant

Start with a controlled amount and do not use repeated tests to evade review.

Reconcile transactions

Distinguish authorization, settlement, reversal, refund, and fee events.

Operational focus for this use case

issuing API integration: Production clients should use scoped API keys, unique idempotency keys, bounded retries, request identifiers, and separate authorization, settlement, reversal, and refund records.

Risk and acceptance boundaries

Merchant acceptance varies by merchant, geography, card network, issuing program, and real-time controls. OPEN RAMBO does not guarantee that any card will work in every payment scenario. Cards must not be used for illegal activity, cash-out, abusive refunds, review evasion, or repeated decline testing.

FAQ

Which operations does the issuing API expose?

The current partner API covers product discovery, card creation, card listing, card details, top-ups, freeze, unfreeze, close, and issuer-side transaction queries.

How should failed requests be retried?

Retry only documented transient errors and reuse the same idempotency key for the same operation. Validation and balance errors require a state change.