--- layout: docs page_title: Sentinel in Consul sidebar_title: Sentinel description: >- Consul Enterprise uses Sentinel to augment the built-in ACL system to provide advanced policy enforcement. Sentinel policies can currently execute on KV modify and service registration. --- # Sentinel in Consul <EnterpriseAlert> This feature requires{' '} <a href="https://www.hashicorp.com/products/consul/">Consul Enterprise</a>{' '} with the Governance and Policy module. </EnterpriseAlert> Sentinel policies extend the ACL system in Consul beyond static "read", "write", and "deny" policies to support full conditional logic and integration with external systems. [Learn more about Sentinel here.](https://docs.hashicorp.com/sentinel/concepts/). To get started with Sentinel in Consul, [read the general documentation](https://docs.hashicorp.com/sentinel/consul/) or [Consul documentation](/docs/agent/sentinel).