RAMBOCARD · VIRTUAL CARD ISSUING PLATFORM

Card Issuing API for Developers and Digital Platforms

Integrate product discovery, virtual card creation, wallet-funded top-ups, card controls, webhook delivery and transaction records through a scoped partner API.

Who this is for

Fintech developers, SaaS platforms, marketplaces, agencies 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, webhook signatures, and separate authorization, settlement, reversal, refund, chargeback and fee records.

Developer center resources

Approved partners receive an App ID, a scoped API key, webhook configuration, delivery history, production status and a Postman collection. The live in-app developer center is available at /issuing-api after sign-in.

App ID and masked API key status
Base URL and allowed scopes
Webhook URL draft and review status
Delivery history for card and transaction events
Operational links for card products, wallet funding and admin review

Core endpoints

The API is organized around card products, card lifecycle, wallet-funded top-ups and transaction lookup.

GET /products - card product, BIN, country, currency, fees, minimum funding and availability
POST /cards - create a virtual card with Idempotency-Key
GET /cards and GET /cards/{cardId} - list cards and inspect card details
POST /cards/{cardId}/topup - deduct platform USD balance and fund the card
POST /cards/{cardId}/freeze, /unfreeze and /close - lifecycle controls
GET /cards/{cardId}/transactions - authorization, settlement, refund, chargeback and fee records

curl -X POST https://openrambo.com/api/issuing/v1/cards
  -H "X-API-Key: or_live_xxxxxxxxx"
  -H "Idempotency-Key: order_20260724_0001"
  -H "Content-Type: application/json"

Webhook events and reconciliation

Do not treat a card operation as complete until your system has reconciled the API response, the platform-wallet ledger entry and the webhook event. Every webhook should be verified, stored and deduplicated by event ID.

card.created - card creation success or failure
card.topup.posted - card funding posted
card.status.changed - freeze, unfreeze, closure or risk status update
transaction.authorized - merchant authorization
transaction.settled - settlement completed
transaction.refunded - refund posted
chargeback.created - dispute or chargeback notice

Production error handling

Production integrations must distinguish authentication, authorization, idempotency conflict, validation, rate limit and upstream errors. 502 should be retried only with bounded backoff and the same idempotency key.

401 Unauthorized - API key missing or invalid
403 Forbidden - scope or account review missing
409 Conflict - idempotency key already used for a different payload
422 Validation error - request must be corrected before retry
429 Rate limited - wait before retry
500 or 502 Upstream error - retry safely and reconcile before displaying final state

Implementation guides for deeper review

Risk and acceptance boundaries

Merchant acceptance varies by merchant, geography, card network, issuing program, and real-time controls. RamboCard 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, wallet-funded 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 before retry.