Sentinel Documentation

Welcome to the Sentinel documentation!

Sentinel is a language and framework for policy built to be embedded in existing software to enable fine-grained, logic-based policy decisions. A policy describes under what circumstances certain behaviors are allowed. Sentinel is an enterprise-only feature of HashiCorp Consul, Nomad, Terraform, and Vault.

This documentation should serve as a reference guide for developing Sentinel policies, embedding Sentinel into your own software, extending Sentinel with plugins, and more. If you're just getting started with Sentinel, please start with the "Why Sentinel?" to understand what Sentinel is, how it compares to other software, and more.