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ApiLogicServer, open source on Git. With 1 command, it creates a customizable project providing a JSON:API, and a Basic Web App. These are based on SQLAlchemy, so it uses sqlacodegen to create your model classes.
SQLAlchemy updates (whether by API, Web App or Python) are monitored by spreadsheet-like rules - 40X more concise than code, extensible with Python.
Regards,
Val