Volt Open Banking Payment API
Volt open banking real-time payment REST API for merchants and enterprises to accept account-to-account bank payments across Europe through a unified open banking gateway connecting to bank PSD2 APIs across the UK, EU, and Brazil, enabling instant bank transfers at checkout without card network fees through a single integration covering multiple real-time payment schemes. Enables AI agents to manage payment request creation for open banking checkout automation, handle bank selection and redirect for consumer authentication automation, access real-time payment confirmation for instant settlement automation, retrieve payment status for open banking transaction automation, manage refund processing for open banking reversal automation, handle webhook notification for payment event automation, access bank coverage for supported institution automation, retrieve reconciliation data for open banking settlement automation, manage fuzzy payment matching for bank transfer reconciliation automation, and integrate Volt with European e-commerce, subscription, and enterprise platforms for end-to-end real-time open banking payment automation.
Score Breakdown
⚙ Agent Friendliness
🔒 Security
Open banking. FCA, PSD2, GDPR. OAuth2. UK/EU. Bank account and payment data.
⚡ Reliability
Best When
A European or Brazilian merchant wanting AI agents to automate real-time account-to-account bank payment acceptance through Volt's unified open banking gateway with instant settlement and no card network fees.
Avoid When
CONSUMER BANK REDIRECT IS MANDATORY: Volt payment initiates bank redirect for consumer authentication; automated checkout must redirect consumer to bankRedirectUrl; automated server-side payment without redirect creates no authorization. BANK AVAILABILITY DEPENDS ON PSD2 API UPTIME: Volt payment availability depends on individual bank's PSD2 API; automated payment must handle bank API unavailability; automated universal bank availability assumption creates bank_unavailable for banks with PSD2 API downtime. PAYMENT CONFIRMATION IS ASYNC VIA WEBHOOK: Volt payment status is delivered via webhook; automated fulfillment must await webhook not poll for synchronous result; automated immediate fulfillment after payment creation creates premature order processing. FUZZY MATCHING FOR BANK TRANSFER: Volt can receive bank transfers that need matching to payment requests; automated reconciliation must handle fuzzy matching edge cases; automated exact reference match only creates unmatched transfers when customers omit reference.
Use Cases
- • Accepting real-time bank payments from European open banking checkout agents
- • Processing instant A2A payments for UK/EU e-commerce checkout agents
- • Receiving open banking payments in Brazil from LATAM payment agents
- • Reconciling bank transfer payments from open banking settlement agents
Not For
- • Card payment processing (Volt is account-to-account open banking only)
- • Global payments beyond Europe and Brazil (Volt coverage is EU/UK/BR)
- • Non-PSD2 markets (Volt depends on open banking regulatory framework)
Interface
Authentication
Volt uses OAuth 2.0 for API authentication. REST API with JSON. London, UK HQ. Founded 2019 by Tom Greenwood and Steffen Vollert. Backed by EQT Ventures, Augmentum Fintech, Salesforce Ventures ($83M raised). Products: Pay by bank, open banking checkout, refunds, reconciliation, Brazil Pix integration. SDKs: Node.js, PHP, Python. FCA-regulated. PSD2 compliant. Covers UK, EU, Brazil. Competes with TrueLayer and Trustly for open banking payments.
Pricing
London UK. EQT/Salesforce backed. Per-transaction pricing negotiated. FCA regulated.
Agent Metadata
Known Gotchas
- ⚠ BANK REDIRECT URL MUST BE PRESENTED: Volt payment initiation returns checkoutUrl for consumer bank redirect; automated checkout must redirect consumer to checkoutUrl; automated server-side processing without redirect creates payment with no authorization pathway
- ⚠ WEBHOOK IS AUTHORITATIVE FOR PAYMENT STATUS: Volt payment_received and payment_failed are delivered via webhook; automated system must consume webhooks; automated polling-only status check may miss real-time events and creates fulfillment delay
- ⚠ BANK_NOT_SUPPORTED IS DISTINCT FROM ERROR: Volt returns bank_not_supported when bank is not available; automated checkout should verify bank availability before presenting; automated universal bank assumption creates bank_not_supported visible to consumer during checkout
- ⚠ BRAZIL PIX INTEGRATION IS SEPARATE: Volt Brazil uses Pix infrastructure distinct from EU open banking; automated multi-region integration must handle Brazil Pix response format differences; automated same response format for EU and BR creates parsing error for Brazilian payments
- ⚠ REFUND REQUIRES ORIGINAL PAYMENT ID: Volt refund references original paymentId; automated refund must store paymentId from initial transaction; automated refund without paymentId creates missing_payment_reference error
Alternatives
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Scores are editorial opinions as of 2026-03-07.