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Run four vendor demos in one week and a pattern appears. Similar bank counts. Similar uptime figures. Similar sandbox that works on the first call. By Friday the shortlist looks like a coin flip.
The differences are real, they just live outside the demo. They surface in the SLA, in who carries which obligation, and in what happens when your business needs a different receiving account eighteen months from now.
Four questions that separate open banking API providers
Coverage is the easiest metric to publish and the least useful to compare. These four questions tell you more about open banking API providers than any feature matrix, and viaBanking uses them internally:
What does the SLA actually cover? An uptime figure for a provider’s own platform is not the same as availability of a specific bank connection. Ask which number is contractual, what the measurement window is, and what remedy applies when it is missed. A contract covering only the vendor’s servers leaves the part your users experience uncovered, which is why viaBanking states the bank connection separately.
Where does regulatory responsibility sit? Regulated services under open banking are performed by licensed institutions. A software vendor that implies it carries your compliance obligations is describing something it cannot deliver. The useful answer is a clear split: which party holds which licence, which duties stay with you, and what records the platform surfaces for your own compliance team.
Can you change the receiving account later? Many vendors are wired to one or two EMIs for the collection account. Choose that partner and you have effectively chosen your bank account too. viaBanking treats that as a design flaw. It works until the terms stop fitting your business, or until you cannot pass onboarding at that specific institution.
What confirms a payment is complete? Payment initiation confirms that a payer authorised a transfer at their bank. It does not confirm funds landed on your collection account. Ask each provider which event triggers their success callback, and whether anything verifies the credit itself.
That fourth question changes procurement conversations quickly. Most open banking API providers answer honestly that they report whatever the initiation partner reported. viaBanking added a verification step instead.
Why account flexibility outlasts the integration
The third question deserves more weight than it usually gets, because it is the hardest to fix later.
Payment initiation and the account that receives money are two separate jobs. When a provider bundles them, a commercial problem at the EMI becomes an engineering problem on your side. Re-integrating a payment flow to change a bank account is an expensive way to solve a contract issue, and viaBanking heard that story often enough to design around it.
Keeping those layers apart is a design principle behind the viaBanking solution. viaBanking routes payment initiation to licensed provider partners and lets the merchant connect that flow to an EMI or bank account that fits, chosen from those already integrated on the viaBanking side. Changing the account does not mean rebuilding the flow.
viaBanking then verifies the incoming credit through read-only API connectivity to the merchant’s collection account, and reports a confirmed receipt rather than a provider acknowledgement. Read-only means exactly that. viaBanking can confirm a credit arrived, with no ability to operate the account or the funds on it.
viaBanking operates as a software and orchestration layer. Regulated steps stay with the licensed partners, and viaBanking surfaces transaction and callback records your compliance team can query without opening a ticket.
Turning a shortlist into a decision
Take your current shortlist of open banking API providers and put those four questions in an email. Not on a call, where good answers are improvised. In writing, where SLA terms and the responsibility split have to be specific. viaBanking answers them in writing too.
The replies will separate a shortlist faster than any demo. Open banking API providers who have run production volume answer precisely. A provider who has not will send you a coverage number and a case study.
The viaBanking team went through the same exercise when selecting its own partners, and it shaped how viaBanking documents statuses, callbacks and account verification today. Every provider on the platform had to answer question four before integration work started.
If a payment flow with a verified credit is what your product needs, get in touch and the viaBanking team will walk through the mechanics with your engineering and compliance people in the room.
