cadrumo.adapters.outbound.llm.response_json module

Locating a JSON object inside a model reply.

A small model routinely wraps its answer in a code fence or a sentence, so the object has to be located rather than assumed to be the whole reply. Two response parsers each carried an identical copy of that search; this is the one they now share.

first_json_object(text)

Return the first complete JSON object in text as its source substring, or None.

The SUBSTRING rather than the decoded object, so validation runs in pydantic’s JSON mode. Strict validation of an already-decoded object would refuse a JSON array where the schema declares a tuple – which every real reply carries, because JSON has no tuple.

Decoding is delegated to the stdlib decoder, which knows where an object ends.

Return type:

str | None

Parameters:

text (str)