alt Hacker NewsWrong, custom "specs" i.e. schemas, are literally all we have for "real" guardrails with LLMs.
https://developers.openai.com/api/docs/guides/structured-out...
Nothing else operates on the logprobs level and literally bans continuations that fail your schema.
Enforcing structured outputs from LLMs is not the same thing as using linters, formatters, static analysis to control how an agent writes code.