AI product Open source
Kairos is an open-source, real-time fraud and risk decisioning platform from Finic. It evaluates sign-ups, logins, orders, payments, payouts and other events, returning an approve, step-up, review or block decision with a risk score and the signals behind it.
Its workflows can query decision models, score events with logistic regression or gradient-boosted trees, branch on results, call webhooks, open review cases and make later decisions. The Grayson decision model answers plain-language questions about structured and unstructured data; its answers can be combined with transaction fields as features for traditional machine-learning models. Kairos also supports experiments that train and compare model variants on historical data before publishing a winning workflow version.
The platform provides an MCP server for Claude Code, Cursor, Codex and other agents, enabling agents to inspect decisions, build workflows and run experiments with actions recorded under an agent key. It includes TypeScript and Python SDKs, a CLI, an HTTP API, a web console and Docker-based self-hosting, with Postgres managed by the server. The repository is licensed under Apache License 2.0.
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An open-source tool for making fraud and risk decisions as activity happens. It evaluates events like logins, orders, or payouts, approving them or flagging them for review, and connects to coding agents through MCP.
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