Validatedata 0.4 – validation rules for Python that resemble your data
Pydantic alternative for when defining full model classes feels like overkill.

Converted SWIFT's prose rules to executable Python when MyStandards is clunky.
Payment engineers and testers working with SWIFT messaging systems
SWIFT MyStandards · XMLSpy · Liquid Studio
Pydantic alternative for when defining full model classes feels like overkill.
Validates live Firestore docs against schema when other tools only generate types.
Pay-per-request IBAN validation with crypto when IBAN.com charges $9,500/year for the same data.
Pydantic alternative for scripts and CLIs, but overlaps with existing inline validation approaches.
Replayable JSON artifacts for debugging autonomous system decisions before OPA even considered robotics.
Rule-based function dispatching beats functools.singledispatch for complex validation logic.