open-consul/website/content/docs/enterprise/sentinel.mdx

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---
layout: docs
page_title: Sentinel in Consul (Enterprise)
description: >-
Sentinel is an access-control-policy-as-code framework and language. Learn how Consul can use Sentinel policies to extend the ACL system's capabilities and further secure your clusters by controlling key-value (KV) store write access.
---
# Sentinel in Consul
<EnterpriseAlert>
This feature requires
HashiCorp Cloud Platform (HCP) or self-managed Consul Enterprise.
Refer to the{' '}
<a href="/docs/enterprise#consul-enterprise-feature-availability">enterprise feature matrix</a>
{' '}for additional information.
</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. Reference the [Sentinel documentation](https://docs.hashicorp.com/sentinel/concepts/) for high-level 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).