We use not so much frameworks but combination of lightweight libraries:

- runtime assertions [0] - to map unknown values at i/o boundary into statically typed code (rpc input parameters, sql results etc)

- template based sql combinators to sanitize sql/generate sql [1]

- jsonrpc over websockets - for bidirectional comms between f/e and b/e

It works very well for us for hundreds of rpcs - it's easy to manage things like permissioning/narrowing visibility and other aspects you need in business/enterprise-like setting ie. performance monitoring is very easy/straight forward.

[0] https://github.com/appliedblockchain/assert-combinators

[1] https://github.com/appliedblockchain/tsql

We build Taxi (https://taxilang.org), which is the type system for APIs, and then Vyne (https://vyne.co) which uses that types to automate all the plumbing.

It's pretty close to what's being described here, and removes the boilerplate in API orchestration.

How is taxilang different from openapi? Does it have client code gen capabilities?