Oso

Oso provides automated least-privilege authorization infrastructure for AI agents and applications, dynamically controlling what coding agents and users can access based on context, session, and action. Its cloud-based authorization service evaluates permissions using Polar, a declarative logic language, and enforces decisions with deterministic controls and full audit trails. Trusted by Webflow, Brex, Duolingo, and Vanta, and backed by Sequoia and Felicis.