I built CBPR Star to allow engineers & testers to validate and edit SWIFT payment system messages for XSD and Business / Usage rules.
The interesting bit is the Business / Usage rules, as they are provided in a mixture of prose and pseudo code by SWIFT. I used coding agents (Claude code mainly) to go from text to python, still a fairly labour intensive task - but considerably quicker than manually doing the same. SWIFT's own MyStandards is similar but less comprehensive and a lot more clunky.
There's also an MCP, not fully released that.
