@beppeartz It is a command line application that executes profiles (read as collections) of pre-existing and/or custom font binary & source QA checks.
Intro: https://font-bakery.readthedocs.io/en/stable/product/Overview.html
Profiles: https://font-bakery.readthedocs.io/en/stable/fontbakery/profiles/index.html
Custom profiles: https://font-bakery.readthedocs.io/en/stable/developer/writing-profiles.html
Source repository: https://github.com/googlefonts/fontbakery
@beppeartz This project is also available to support fontbakery use in continuous integration testing on GitHub repositories (GitHub Actions runners). We use FB as part of a CI testing workflow.
A GitHub Action for continuous integration testing with the fonttools/fontbakery font quality assurance tool - GitHub - f-actions/font-bakery: A GitHub Action for continuous integration testing wit...
@beppeartz This is the description of the check in the font bakery sources:
“Iterate over the 'fvar' named instances, and confirm that every coordinate can be represented by the STAT table Axis Value tables.”