Several endpoints in Nomad use or require ACL tokens to operate. The token are used to authenticate the request and determine if the request is allowed based on the associated authorizations. Tokens are specified per-request by using the `X-Nomad-Token` request header set to the `SecretID` of an ACL Token.
For more details about ACLs, please see the [ACL Guide](/guides/security/acl).
For more details about ACLs, please see the [ACL Guide](https://learn.hashicorp.com/nomad/acls/fundamentals).
The `/sentinel/policies` and `/sentinel/policy/` endpoints are used to manage Sentinel policies.
For more details about Sentinel policies, please see the [Sentinel Policy Guide](https://learn.hashicorp.com/nomad/governance-and-policy/sentinel).
Sentinel endpoints are only available when ACLs are enabled. For more details about ACLs, please see the [ACL Guide](/guides/security/acl).
Sentinel endpoints are only available when ACLs are enabled. For more details about ACLs, please see the [ACL Guide](https://learn.hashicorp.com/nomad/acls/fundamentals).
~> **Enterprise Only!** This API endpoint and functionality only exists in
Nomad Enterprise. This is not present in the open source version of Nomad.