The APImetrics Insights CASC (Cloud API Service Consistency) score lets you know the performance and quality of an API at a glance. It also lets you instantly compare any API with any other API. Not all APIs are identically comparable, so the usefulness in comparing two APIs depends on the nature of the APIs. In the case of Open APIs for UK CMA9 Banks, we can make direct (or almost direct) comparisons. That's because each of the CMA9 banks exposes APIs that do exactly the same things – with two caveats: Some banks have more ATMs or branches than others The [...]

The story of our previous monthly surveys of the UK CMA9 Open Banking public APIs has been that roughly 30% of the APIs have fallen below an acceptable score of 800 or more. While things have improved in June, confirming our suspicions that many of the banks took advantage of the multiple holidays during May to make changes, we still observe that 28% of the APIs we monitor are performing below a 'good' score as determined by our CASC scoring system. This is strongly tied to a small number of the institutions involved. Generally speaking, if some of a bank's [...]