Adhd

adhd is an open source reasoning harness for coding agents published by Divergent Labs, a research group building reasoning systems around divergent, nonlinear thinking. Instead of letting a model commit to its first plausible idea, the harness generates many candidate solutions in parallel, each under a different cognitive frame and isolated so none can anchor to the others, then critiques and develops the strongest. It is aimed at developers and researchers who use coding agents on open ended engineering problems where there is no single known answer. The harness runs in three stages. Diverge produces N branches at once, each under one of 15 cognitive frames with no shared context. Critique runs one critic pass that scores every candidate, prunes the weak ones and flags traps, meaning ideas that look right but quietly break. Deepen expands the survivors into concrete plans, keeping the frame and trace that produced each one inspectable. The harness sits around any capable model rather than requiring a special one. Divergent Labs publishes evaluations comparing it against a single shot baseline across six open ended engineering problems, along with a preprint describing the method. adhd is free, with the code on GitHub and a package on npm. No paid product or pricing is published. Divergent Labs states that it publishes the harness before training a model, so the harness is the current deliverable and any trained model is future work.