The permissions layer for humans and AI
Unified permissions for apps, RAG, and agents. Never build authorization again.
A single permissions layer for apps, RAG, and agents
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
Oso decouples authorization from your application, so you can build fine-grained access control independently of your business logic.
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 (for the last time)
The right abstractions for every use case. Idiomatic SDKs in the language of your choice. Inline policy tests. Logging, regression testing, and debugging. Backed by the most comprehensive documentation on earth and the team that created the category.
Authorization built for the critical path
Permissions for LLMs and Agents
LLM Authorization
Define permissions in one place and enforce them for human and LLM users alike
RAG Apps
Build Retrieval-Augmented Generation that adds context without leaking data
Agents
Monitor agents’ actions and scope permissions down to least privilege
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
DIY costs more than you think. 80%+ more.
Cut through the guesswork with Oso’s Authorization TCO Framework. Calculate the true costs of build versus buy.
