Jev Dsl

BAML maps function return types onto Jev questions: bool and float become Noul probabilities, enums and literal unions become Choice picks, and one class turns its fields into a single multi-question request.

BAML is Boundary's Apache-2.0 programming language for agents: TypeScript-looking syntax, a Rust-like type system that persists at runtime, typed errors, green threads, and callable from TypeScript, Python, Go, C#, and Java.

Python with a smart if: .jev files add the ~ question operator and jev/case blocks that Jev answers with a number or a label, never text. Files are rewritten to plain Python at import time; every ~ is one paid TypeSafe API call.