I've just posted a pre-release edition of Curvature, my utility-theory AI design tool. Curvature provides a complete end-to-end solution for designing utility-based AI agents; you can specify the knowledge representation for the world, filter the knowledge into "considerations" which affect how an agent will make decisions and choose behaviors, and then plop a few agents into a dummy world and watch them run around and interact with things.

Preview 1 (Core) contains the base functionality of the tool but leaves a lot of areas unpolished. My goal with this preview is to get feedback on how well the tool works as a general concept, and start refining the actual UI into something more attractive and fluid. The preview kit contains a data file with a very rudimentary "scenario" set up for you, so you can see how things work without cutting through a bunch of clutter.

Give it a test drive, let me know here or via the Issue Tracker on GitHub what you like and don't like, and have fun!