For Agents
Create and track payment transactions, run KYC data requests, and validate IBANs across European payment methods on the Buckaroo gateway.
Install Jentic One Beta
Jentic One is a self-hosted execution layer for AI agents. It lets your agent call the Buckaroo Checkout JSON Gateway API, or any other public or private API you need. You set the rules, the agent never sees your credentials, and every call is logged.
Two steps, two machines. Install the instance in a safe environment, then register your agent from wherever it runs.
Step 1: Jentic One Host machine
# On the machine that will host your Jentic One instance:
curl -fsSL https://raw.githubusercontent.com/jentic/jentic-one/main/tools/install.sh | shStep 2: Agent machine
# On the machine where your agent runs (keep this separate from the instance):
curl -fsSL https://raw.githubusercontent.com/jentic/jentic-one/main/tools/install.sh | sh
jentic register # connects your agent to your Jentic One instanceJentic One is in public beta. The setup above keeps your agent separate from the instance, which is what you want before using real credentials: an agent running as the same OS user as Jentic One can read its stored keys directly. Just evaluating? A single local install is fine to start. See the secure deployment guide for the tiers.
What an agent can do with Buckaroo Checkout JSON Gateway API.
Create a payment transaction with iDEAL, card, SEPA Direct Debit, Klarna, or other Buckaroo-supported services
Poll transaction status by key or fetch statuses for multiple transaction keys in one request
Cancel a single transaction or batch-cancel multiple transactions in one call
GET STARTED
Use for: Create an iDEAL payment for a 49.99 EUR order, I need to fetch the status of a Buckaroo transaction, Cancel a pending Buckaroo transaction by its key, Validate a Dutch IBAN before charging via SEPA
Not supported: Does not handle merchant onboarding, payout reporting, or accounting reconciliation files — use for transaction creation, status, refunds, and IBAN validation only.
Buckaroo's Checkout JSON Gateway is the European payment gateway API used by Dutch and EU merchants to create transactions across iDEAL, credit cards, SEPA Direct Debit, Bancontact, Klarna, and Apple Pay. The spec covers transaction creation, single and multi-key status polling, cancellation, refund and invoice lookup, KYC and verification data requests, and IBAN validation. This buckaroo.nl import describes the same gateway base URL exposed at checkout.buckaroo.nl and is the integration surface for online checkouts that need to settle in EUR through Buckaroo.
Fetch refund eligibility and pre-filled refund info for a transaction key before issuing the refund
Retrieve credit invoice details by invoice key for finance reconciliation
Run a Buckaroo data request for KYC, age verification, or address verification before payment
Validate IBAN strings or convert Dutch BBAN to IBAN via the gateway tools endpoints
Patterns agents use Buckaroo Checkout JSON Gateway API for, with concrete tasks.
★ Dutch and EU Online Checkout
Accept payments in EUR for Dutch and broader EU consumers by creating a transaction on /json/Transaction with the chosen Service such as ideal, paybycard, or sepadirectdebit. Buckaroo returns either a final status or a redirect URL the consumer follows to authorise the payment, after which the merchant polls /json/Transaction/Status/{transactionKey} until the transaction settles. End-to-end integration takes a few days when the merchant already has a Buckaroo contract.
POST to /json/Transaction with Services.ServiceList containing ideal, AmountDebit 49.99, Currency EUR, and the order Invoice number, then return the redirect URL
Batched Status Reconciliation
Reconcile end-of-day transaction state by sending a list of transaction keys to /json/Transaction/Statuses to retrieve the current status for each in a single request. This is faster than polling each key individually, especially for merchants processing thousands of daily transactions, and feeds nightly batch jobs that update an internal ledger.
POST a list of transaction keys from the day's orders to /json/Transaction/Statuses and update the internal ledger with each returned status
Pre-Payment KYC and IBAN Validation
Reduce failed direct debits and chargebacks by running a Buckaroo data request via postDataRequest for KYC, age, or address checks, and validating the consumer's IBAN with /json/Tools/IbanConverter/{iban} before submitting the payment. For Dutch BBAN inputs, /json/Tools/BbanToIbanConverter/{bban} converts to the full IBAN format required by SEPA. Validation happens in a single round trip.
GET /json/Tools/IbanConverter/{iban} with the customer-supplied IBAN and reject the checkout if the response indicates the IBAN is invalid
AI Agent Payment Initiation Through Jentic
Allow an AI agent to initiate a Buckaroo payment on a user's behalf without holding the merchant's website key or secret key. Through Jentic, the agent searches for transaction creation, loads the postTransaction schema, and executes against /json/Transaction with the order details. The Buckaroo HMAC Authorization header is computed by Jentic from the secret stored in the vault so the credentials never enter the agent's context.
Use Jentic to search 'create a Buckaroo iDEAL payment', load the postTransaction schema, and execute with the order amount and Service ideal
15 endpoints — buckaroo's checkout json gateway is the european payment gateway api used by dutch and eu merchants to create transactions across ideal, credit cards, sepa direct debit, bancontact, klarna, and apple pay.
METHOD
PATH
DESCRIPTION
/json/Transaction
Create a new payment transaction with a chosen service
/json/Transaction/Status/{transactionKey}
Get the status of a single transaction
/json/Transaction/Statuses
Get statuses for multiple transaction keys
/json/Transaction/Cancel/{transactionKey}
Cancel a pending transaction
/json/Transaction/RefundInfo/{transactionKey}
Retrieve refund eligibility and amount for a transaction
/json/DataRequest
Run a KYC or verification data request
/json/Tools/IbanConverter/{iban}
Validate an IBAN string
/json/Transaction/InvoiceInfo/{invoiceKey}
Retrieve credit invoice details by invoice key
/json/Transaction
Create a new payment transaction with a chosen service
/json/Transaction/Status/{transactionKey}
Get the status of a single transaction
/json/Transaction/Statuses
Get statuses for multiple transaction keys
/json/Transaction/Cancel/{transactionKey}
Cancel a pending transaction
/json/Transaction/RefundInfo/{transactionKey}
Retrieve refund eligibility and amount for a transaction
Three things that make agents converge on Jentic-routed access.
Credential isolation
The Buckaroo website key and secret key are stored encrypted in the Jentic vault. Jentic computes the per-request HMAC-SHA256 Authorization header at execution time so the raw secret key never enters the agent's context, prompts, or logs.
Intent-based discovery
Agents search by intent (e.g., 'create an iDEAL payment') and Jentic returns the matching postTransaction operation with its Services schema, so the agent calls /json/Transaction without learning Buckaroo's HMAC signing rules.
Time to first call
Direct Buckaroo integration: 3-5 days for HMAC signing, redirect handling, status polling, and error-code mapping. Through Jentic: under 1 hour — search, load schema, execute.
Alternatives and complements available in the Jentic catalogue.
Specific to using Buckaroo Checkout JSON Gateway API through Jentic.
What authentication does the Buckaroo Checkout JSON Gateway API use?
Buckaroo uses an apiKey-style Authorization header that contains an HMAC-SHA256 signature computed from the website key, secret key, request method, URL, timestamp, nonce, and request body hash. Through Jentic the website key and secret key are stored encrypted in the vault and the signature is computed at execution time so the secret key never enters the agent's context.
Can I create an iDEAL payment with the Buckaroo API?
Yes. POST to /json/Transaction with Services.ServiceList containing ServiceName 'ideal', the AmountDebit, Currency 'EUR', Invoice number, and ClientIP. Buckaroo returns a RequiredAction with a RedirectURL for the consumer's bank, plus a transaction key you can poll on /json/Transaction/Status/{transactionKey} to confirm settlement.
What are the rate limits for the Buckaroo API?
Buckaroo does not publish a global per-second rate limit in the spec. Production traffic is shaped by the merchant agreement and abuse-protection limits applied to the gateway. If a request is throttled the API returns an error response and clients should back off before retrying.
How do I check a Buckaroo transaction status through Jentic?
Install the SDK with pip install jentic, search for 'check Buckaroo transaction status', load the getTransactionStatus schema, and execute it against /json/Transaction/Status/{transactionKey} with the transaction key. Jentic computes the HMAC Authorization header from the vault and returns the parsed status response.
Can I refund a transaction with this API?
Yes. First call getTransactionRefundInfo on /json/Transaction/RefundInfo/{transactionKey} to confirm the refundable amount and pre-filled fields, then create a new refund transaction via /json/Transaction with the appropriate refund Service and the original transaction key in OriginalTransactionKey.
Can I validate an IBAN before charging?
Yes. GET /json/Tools/IbanConverter/{iban} returns whether the IBAN is structurally valid and, where supported, the bank name. For Dutch BBAN inputs, /json/Tools/BbanToIbanConverter/{bban} converts to full IBAN. Use this before initiating SEPA Direct Debit to avoid downstream chargebacks for invalid account numbers.
/json/DataRequest
Run a KYC or verification data request
/json/Tools/IbanConverter/{iban}
Validate an IBAN string
/json/Transaction/InvoiceInfo/{invoiceKey}
Retrieve credit invoice details by invoice key