# Open Policy Agent

> OPA is a general-purpose policy engine that unifies policy enforcement across the stack. Policies are written in Rego.

This file is a curated documentation index for AI agents and other automated consumers. Append `.md` to any docs URL to fetch the machine-readable Markdown form.

Full page index: https://openpolicyagent.org/sitemap.xml

## Docs

- [Documentation](https://openpolicyagent.org/docs.md): Language, APIs, CLI, and integrations.
- [OPA + Kubernetes](https://openpolicyagent.org/docs/kubernetes.md): Admission control and policy on Kubernetes.
- [OPA + Envoy](https://openpolicyagent.org/docs/envoy.md): External authorization for Envoy-based service meshes.

## Projects

- [Regal](https://openpolicyagent.org/projects/regal.md): Linter and language server for Rego.