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You focus on making agents useful. We make sure they don’t wreck your stack.

Simulate

Break your agents in staging, not prod

Spin up simulations that hit your real tools and data paths.

Watch agents try to exfiltrate, spam tools, or follow bad prompts—then patch the behavior before it ships.

Tight loop: run, watch, fix, repeat.

Diagram showing interaction between Agent and OSO with Attack, Response, and Learn & Iterate steps, highlighting attack types like prompt injection, permissions escalation, and data exfiltration.
Detect

Catch weird behavior fast

Agents drift. Prompts change. Tools grow.

We watch real behavior over time and compare it to what’s normal for your org.

When something starts to look off, we kill its access, quarantine the agent, and roll back the changes.

Chat interface showing user request for a refund, automated agent response, refundOrder parameter box, and an alert for behavioral anomaly detecting a duplicate refund with options to mark benign or quarantine.
Enforce

Least privilege, wired into every call

Every tool call goes through Oso.

We look at the intent, the user, and the context, then grant the minimum access needed to do the job.

High‑risk actions (deletes, payments, wide‑scope reads, the “Lethal Trifecta”) go through hard controls, not clever prompting.

Diagram showing an Agent on the left sending Events like session.start and user.input to OSO on the right, which returns Decisions such as allow, deny, or escalate back to the Agent.
Report & Analyze

Receipts

Full trails of who did what, through which agent, and with which permissions.

Views that show over‑permissioned agents, risky tools, and how your posture is trending.

So when the CEO asks, “Is this safe?”, you can show them.

Case Studies

Adopted Oso as a centralized authorization platform, enabling faster delivery of secure, agentic AI applications.

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.

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.

Brex cuts thousands of lines of auth code, achieves sub-10 ms P99 performance, and gains 4× engineering efficiency with Oso’s centralized authorization.

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.

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Testimonials

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You can’t prompt your way to least privilege. Oso wires it into every call. Let’s have a cocktail.
Jared Rosoff,
VP of Infra, Roblox
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Agents should unlock creativity, not create new categories of risk. Oso's approach—simulate, enforce, detect—is exactly how you make that real.
Kareem Amin
Co-Founder & CEO, Clay
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We want partners who understand where security is headed, not just where it's been. Oso gets that agentic systems need fine-grained authorization baked in from the start.
Mark Hillick
CISO, Brex
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Agents in production need the same rigor we bring to clinical decisions: precise, measurable, auditable. Oso gets that.
Adam Chekroud
Co-Founder & President, Spring Health
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Oso made building Productboard Pulse much faster, since every API can just call Oso to figure out what’s allowed, no matter where the data resides. By building on top of a proven authorization foundation, we’ve avoided the biggest hurdles derailing AI efforts in many companies.
Matúš Koperniech
Staff Engineer, Productboard

Looking for application authorization?

Support any authorization model—RBAC, ABAC, or ReBAC—without brittle custom code.