Gadgets
Show HN: Kairos – Open-source risk and fraud decisioning platform
Kairos is an open-source alternative to Sift, Sardine, and other real-time fraud decisioning platforms that addresses two major problems: lack of labeled data and constantly changing fraud tactics. It uses a combination of traditional machine learning models like XGBoost and 'System One' decision models that can handle plain language questions and unstructured data, and allows users to define a decision workflow and train models on their own data using an MCP server. Kairos is self-hostable with Docker or can be used through a hosted version at https://kairos.finic.ai. It is built around Grayson, Finic's decision model, and can be controlled through agents like Claude Code, Cursor, Codex, or any other agent over MCP. The platform requires Node.js 22, pnpm 10, and a Grayson API key from portal.finic.ai, and can be set up using Docker or the CLI.