Kairos

About

Kairos is an open-source platform that decides each sign-up, login, order, payment or payout in real time, returning approve, step up, review or block with a risk score and reasons. It combines plain-language decision model questions, which work with few labeled examples, with logistic regression and gradient-boosted trees. An MCP server lets coding agents such as Claude Code or Cursor build workflows and run model experiments. It offers TypeScript and Python SDKs, a CLI, an HTTP API and Docker self-hosting.