Fintwin Developer Portal

Connect to banks
through one API standard

Service guides, API contracts and webhooks for enterprises integrating with Fintwin. Try any API on the simulator, no account needed.

Start integrating Browse the API reference

POST/api/v1/cms_2100Simulated

{
  "REQ_DATA": {
    "TRT_INST_CD": "TEST0001",
    "TRSC_DT": "20261014",
    "TRSC_SEQ_NO": "0000300",
    "BNK_CD": "970422",
    "ACCT_NO": "000000000000TEST"
  }
}

200"RSLT_CD": "0000"

Services

Debit mandateRegister and cancel a debit mandate from the enterprise app.Batch debitCreate a batch, query status, refund, and exchange files.Near-real-time debitDebit a single amount from a mandated account.PayoutSingle transfer and status inquiry.Virtual accountVirtual account lifecycle and VietQR generation.Linking and paymentLink, confirm, unlink, and query link state.InquiriesBalance, account name, detail, invoice, and bank list.ReconciliationDaily transaction matching and exception handling.

Integrate in 3 steps

From reading the docs to calling the sandbox, with nothing to install.

1Pick a service
Read the business flow, call direction and money flow of each service.
2Try the simulator
Send a request with TEST data and see field checks and sample responses.
3Call the sandbox
Sign in with the company code and authorization key Fintwin issues.

APIs Fintwin provides

The enterprise calls Fintwin with HTTPS POST JSON, using Authorization, a signature or AES depending on the API.

Webhooks the enterprise builds

Fintwin calls the enterprise endpoint to check contracts and report results. The portal only describes the contract.

Popular APIs

POSTRegister mandate/api/v1/end-user/autodebit-registerDebit mandate POSTReal-time debit/api/v1/cms_3800Near-real-time debit POSTSingle payout/api/v1/cms_1100Payout POSTCreate virtual account/api/v1/va_8100Virtual account and VietQR POSTGenerate VietQR/api/v1/partner/gen-viet-qrVirtual account and VietQR POSTAccount balance/api/v1/cms_2100Inquiries

Ready for the sandbox?

Contact Fintwin for a company code and authorization key for the test environment.

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