The permissions layer for humans and AI
Unified permissions for apps, RAG, and agents. Never build authorization again.
Oso is authorization as a service
Oso is what engineering teams use when they’re done rolling their own permissions. It lets your application answer questions like “can this user read that document?” and “which objects can this agent manage?”
• Define your authorization logic centrally
• Plug in your application data
• Call the Oso API to enforce authorization across apps, RAG, and agents
Available in the cloud or self-hosted.
How Oso works
Write your policy
RBAC, ReBAC, ABAC, AnyBAC you need. Express any authorization model with Polar, our flexible DSL for permissions logic.
Plug in your data
Sync your authorization data with Oso, or keep it in your database – whatever fits your architecture best.
Integrate and enforce
Pick the right abstractions for every use case, with idiomatic SDKs, inline policy tests, logging, regression testing, and debugging built-in.
Ship features, not access control optimizations
Beyond OAuth: Permissions for AI-native apps
Agentic Workflows
Let agents act on behalf of users with limited permissions – with full visibility into every action
RAG Apps
Get permissions-aware LLM responses by filtering vector embeddings
MCPs
Protect your MCP with fine-grained permissions
Case Studies
Replaced the legacy system with Oso Cloud and built dashboards and APIs on top of Polar, enabling business self-service and eliminating manual code changes.
Unified RBAC, ReBAC, and ABAC into a single, maintainable framework using Oso’s declarative policy language—enabling reusable, consistent access logic across services—while Oso Cloud delivered fast, compliant authorization checks close to local HR data.
Adopted Oso as a centralized authorization platform, enabling faster delivery of secure, agentic AI applications.
Centralized complex permission logic without syncing sensitive data, simplifying development and debugging.
Delivered centralized, versioned policies that streamlined complex access control across services, with enterprise-grade audit logs and dashboards enabling transparent reporting to meet stringent compliance requirements.
Eliminated infrastructure overhead, standardized global access, and enabled fine-grained RBAC and ABAC via Polar—giving engineers the tools to model real-world access while ensuring low-latency, resilient authorization with geo-replicated environments.
Developer Love
