OSS Discovery

GB
United Kingdom
SECURITY & PRIVACY
SELF-HOSTABLE
ACTIVELY MAINTAINED
COMPLETELY FREE
Cerbos

CERBOS

"Cerbos: Scalable authorization layer for AI agents & services. Enables fine-grained access control via externalized policies. Secure agentic workflows, RAG pipelines & MCP servers with policy-driven access control & full decision logging. Centralize authorization logic, define & update policies in one place."

GITHUB STARS
4.4k
+12% this month
FORKS
177
Active community
LAST PUSH
Apr 24, 2026
High momentum
WATCHERS
34
Tracking updates
LICENSE
Apache-2.0
Commercial use
"Cerbos: Scalable authorization layer for AI agents & services. Enables fine-grained access control via externalized policies. Secure agentic workflows, RAG pipelines & MCP servers with policy-driven access control & full decision logging. Centralize authorization logic, define & update policies in one place."

High Performance

Built for speed and minimal overhead.

Self-hostable

Docker, Kubernetes, or bare metal

Developer Native

Programmable via any language workflow

SUPPORTED LANGUAGES

Go
Go
Go Template
Go Template
Hurl
Hurl
Shell
Shell
Just
Just
Makefile
Makefile
Smarty
Smarty
JavaScript
JavaScript
PLpgSQL
PLpgSQL
HTML
HTML
Nix
Nix

VISUAL INTERFACE

Screenshot 1
Screenshot 2
Screenshot 3

The Quick Glance

Status
Active
Category
Security & Privacy
Pricing
Completely Free
Self-Hosted
Yes
Available on
Windows
macOS
Linux
Latest Release
v0.51.0
Feb 4, 2026

Relative Standing — across 1,284 tools

STARS4.4k
Top 51% globally
FORKS177
Top 67% in Open Source
ACTIVITYHigh
Top 42% Activity
WATCHERS34
Top 57% Community