The openstudio-standards library provides methods for programatically generating, modifying, and checking OpenStudio building energy models. It can create a typical building from user geometry, template geometry, or programmatically generated geometry. It can apply a building standard including ASHRAE 90.1 or NECB to a model. It can transform a proposed building model into a 90.1 Appendix G code baseline model. It can check a model against a building standard. It can generate represenative typical buildings, such as those used in ComStock.