This assumes you have created a RabbitMQ user with the administrator tag.

Refer to the RabbitMQ REST API documentation.

The curl command with the --user option can be used to make an API connection to RabbitMQ. In this example, every user will be returned.

curl --user john.doe:itsasecret http://server001:15671/api/users

Something like this should be returned.

[
    {
        "hashing_algorithm": "rabbit_password_hashing_sha256",
        "limits": {},
        "name": "john.doe",
        "password_hash": "cER8LDfLm++IqrqIdMgLpJ0/ADih08ZaZHx3ja+kPXjqNVxL",
        "tags": "administrator"
    },
    {
        "hashing_algorithm": "rabbit_password_hashing_sha256",
        "limits": {},
        "name": "jane.doe",
        "password_hash": "iBe4IDLdPbMi5cq+vbQWj+TZecchj42u7rjWwqGT0tIMpwQa",
        "tags": "management"
    }
]

Here is how to list an individual user.

curl --user john.doe:itsasecret http://server001:15671/api/users/john.doe

Which should return something like this.

[
    {
        "hashing_algorithm": "rabbit_password_hashing_sha256",
        "limits": {},
        "name": "john.doe",
        "password_hash": "cER8LDfLm++IqrqIdMgLpJ0/ADih08ZaZHx3ja+kPXjqNVxL",
        "tags": "administrator"
    }
]