Except it's not a standard. It's "everyone has a different API that is broken in...

proctrap on March 23, 2022 | parent | context | favorite | on: Apple acquires UK open banking startup Credit Kudo...

Except it's not a standard. It's "everyone has a different API that is broken in another way". But you can threaten legal action if they don't fix it or help you, which gets stuff done.