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---
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layout: docs
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page_title: Sentinel in Consul (Enterprise)
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description: >-
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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.
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---
# Sentinel in Consul
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<EnterpriseAlert>
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This feature requires
HashiCorp Cloud Platform (HCP) or self-managed Consul Enterprise.
Refer to the{' '}
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<a href="/consul/docs/enterprise#consul-enterprise-feature-availability">enterprise feature matrix</a>
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{' '}for additional information.
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</EnterpriseAlert>
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Sentinel policies extend the ACL system in Consul beyond static "read", "write",
and "deny" policies to support full conditional logic and integration with
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external systems. Reference the [Sentinel documentation](https://docs.hashicorp.com/sentinel/concepts) for high-level Sentinel concepts.
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To get started with Sentinel in Consul,
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[read the general documentation](https://docs.hashicorp.com/sentinel/consul) or
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[Consul documentation](/docs/agent/sentinel).
