Omnist: Canonical Schema and Data Model for JSON, YAML, TOML, and XML

If you've ever hand-written a converter between JSON and YAML, or guessed whether a schema change would break someone downstream, this might be useful.

I built Python library with one tree model underneath JSON, YAML, TOML, and XML. Read any of them into the same structure, validate it against a schema, write it back out to any of the others. No per-pair converters.

I put together a short deck walking through the model and implementation:

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Try it out

Quick start: .