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Kairos: Open-source fraud decisioning platform with agent-first MCP architecture

·2026.11.04 06:16

Key point

Apache-2.0 licensed platform that allows coding agents to tune risk models via MCP and supports decision models that operate with few labels.

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Details

  • Kairos is an open-source (Apache-2.0) real-time risk and fraud decisioning platform positioned as an alternative to Sardine, Sift, Riskified, and SEON.
  • The platform features an agent-first architecture where coding agents (Claude Code, Cursor, Codex) use MCP to read decision logs, configure workflows, and propose model variants for automated testing and deployment.
  • It supports a proprietary decision model called Grayson, which provides calibrated probabilities from plain-language questions and functions effectively with few labels and unstructured data, unlike traditional gradient-boosted trees.
  • Developers can self-host the platform using Docker or run it locally via CLI, with SDKs available for TypeScript and Python and integrations for Shopify and inbound webhooks from providers like Stripe.
open-sourcemcpai-agentsrisk-managementfraud-detectiondecisioning-platform
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