Fintecture Vocabulary is a controlled vocabulary published by Fintecture on the APIs.io network, defining 34 terms.
The terms are organized into 6 groups — concepts, products, services, rails, auth, and security.
Defined terms include Payment Initiation Services, Account Information Services, Payment Service User, Account Servicing Payment Service Provider, and Third Party Provider.
2 terms carry alternate labels, so a consumer can resolve the synonyms Fintecture accepts to the canonical term.
A controlled vocabulary pins the words an API’s schemas, parameters and documentation use to one agreed definition each — the shared language a human or an agent needs to read the API the same way its authors do.
Payment Initiation Services
PIS
PSD2 regulated service category for initiating payments from a PSU's payment account on their behalf.
Payment Initiation Service ProviderPISP
Account Information Services
AIS
PSD2 regulated service category for retrieving information from a PSU's payment account on their behalf.
Account Information Service ProviderAISP
Payment Service User
PSU
The end customer initiating a payment or granting account access.
Account Servicing Payment Service Provider
ASPSP
The PSU's bank that ultimately holds the account being debited or read.
Third Party Provider
TPP
The PSD2 regulated party (Fintecture here) acting on the PSU's behalf as PISP and/or AISP.
Strong Customer Authentication
SCA
Two-factor authentication required by PSD2 for most regulated payment and account-access flows.
Reference Unique Mandate
RUM
Per-mandate unique identifier in the SEPA Direct Debit / e-mandate scheme. Duplicate RUMs return 409 Conflict.
Immediate Transfer
immediate-transfer
Pay-by-bank Open Banking transfer initiation. The PSU authenticates at their bank and confirms the payment; settlement is near-instant.
Smart Transfer
smart-transfer
Auto-reconciled transfer using a merchant-allocated virtual unique IBAN. Inbound funds match exactly back to the payment session.
Request To Pay
request-to-pay
Payment link delivered by email, SMS, QR code, or embedded in an invoice. PSU follows the link to complete an Immediate Transfer, Smart Transfer, or BNPL payment.
Buy Now Pay Later
bnpl
Deferred payment option composed inside the Payment Hub.
Verified Payout
verified-payout
Outbound disbursement to a verified bank account, used for customer reimbursements and credits.
Immediate Refund
immediate-refund
Full or partial refund initiated to the original payment account or to an alternative payout account.
Account Information
account-information
Retrieve PSU accounts, balances, holders, and transactions.
AIS Identity Verification
ais-verification
AIS-backed name-match check that the bank account holder matches the merchant's customer record.
E-Mandates
e-mandates
SEPA-style mandates identified by RUM; supports cancel and revoke status transitions.
Payment Hub
payment-hub
Single endpoint that orchestrates Immediate Transfer, Smart Transfer, and BNPL inside a unified payment session.
Local Acquiring
local-acquiring
Merchant funds first land in a Fintecture-managed acquiring account, then are settled to the merchant's own bank account.
SEPA Credit Transfer
SEPA
SEPA Instant Credit Transfer
iSCT
http-message-signature
RFC draft-cavage-http-signatures. Production calls require Signature, Digest, Date, and x-request-id headers.
Every vocabulary here is available over the APIs.io API and to AI agents over MCP. Vocabularies is not yet its own endpoint on the v1 API. Reach it through catalog search and the tag graph, or the MCP server.
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