Guides

Practical, no-fluff guides on Open Banking testing — where sandboxes fall short, how to test against real UK bank accounts, and what to check before FCA authorisation or a release.

Variable Recurring Payments (VRP) Testing: What Sandboxes Get Wrong

VRP consent setup and each individual payment are separate flows with different failure modes, and sandboxes tend to flatten both into one simplified path.

TPP Registration Checklist: What UK Regulators Actually Check Before You Go Live

What UK Third Party Provider registration actually involves, from choosing the right FCA authorisation type to Open Banking Directory onboarding, and where real testing fits.

Testing Bulk and Business Payments Without a Business Bank Account

Bulk payment testing needs a business account willing to be your test target. Most banks won't offer one for free. Here's the workaround.

Open Banking Sandbox Testing Isn't Enough: When You Need Real Bank Accounts

Why sandboxes miss the SCA quirks, consent-flow variations, and real account data that break integrations in production — and how to close the gap before FCA authorisation testing.

How to Reproduce a Live-Only Open Banking Bug (Without Guessing)

Some bugs only show up against real bank accounts and never reproduce in a sandbox. Guessing at the cause wastes time. A more reliable way to isolate and confirm the fix.

FCA Authorisation as an AISP or PISP: What 'Real World Testing' Evidence Actually Means

The FCA won't give you a testing checklist, but your authorisation review depends on proving your integration actually works. What real evidence looks like, and how to get it.

Consent Journey UX Differences Across UK Banks: A Developer's Field Guide

The specification says what a consent journey must accomplish, not how it looks or how many steps it takes. Here's what actually varies bank to bank.

Build vs Rent: The Hidden Cost of Building Your Own Open Banking Test Rig

Your own real-bank test rig looks cheaper on paper. It rarely is once you count the bank relationships, the maintenance, and the time you're not spending on your actual product.

Becoming a ConsentWise Agent: How Real Bank Account Testing Actually Works (and Is It Safe)

ConsentWise's Agents use their own UK bank accounts to help fintechs test Open Banking apps and earn secondary income. What that actually involves, and why it doesn't mean sharing your banking credentials.