SINT Protocol
Open-source runtime security and governance for AI agents, MCP tools, robotics, industrial automation, and physical AI.
Mission Authority: SINT also provides a hardware-agnostic authority and
evidence protocol for autonomous air, ground, maritime, and robotic systems. It
binds platform identity, mission scope, operator authorization, abort behavior,
and signed after-action evidence without selecting targets or generating
effects. See docs/mission-authority.md.
SINT Protocol is an open protocol and TypeScript reference stack that sits
between AI agent intent and real-world execution. Before a governed tool call,
robot command, industrial write, payment-like action, or actuator movement can
run, the request passes through PolicyGateway.intercept() for capability-token
authorization, T0-T3 approval tiering, physical constraint enforcement,
revocation checks, and tamper-evident evidence logging.
What is SINT Protocol?
SINT is an AI agent security control plane for actions with real-world consequence. It helps teams answer four questions before an autonomous system acts:
