Polarity

Polarity describes itself as a self-improvement stack for agents, meaning it gives an AI agent a feedback loop to critique and revise its own outputs against a target metric. The concept is legitimate — automated self-refinement is a real technique used in eval pipelines — but the positioning as a launch product is vague. What is not clear from the description is whether this is a hosted service, an SDK, a prompting framework, or all three, and that ambiguity is a problem for anyone trying to decide whether to spend time on it. The audience is narrow: AI engineers building multi-step agentic workflows who need a structured eval-and-refine loop and do not want to roll one from scratch. For a regular SaaS founder shipping a product, this is probably not the Saturday morning project. -> Best for: AI engineer building agentic pipelines who needs a structured self-critique loop.