Application Authorization
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.
Testimonials
Built for the critical path
LLM Permissions
Microservices
List Filtering
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.
