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, John Doe will make a connection to the RabbitMQ server listening on port 15671 and then list every policy in every virtual host.

curl
--request GET
--user john.doe:itsasecret
--url http://hostname:15671/api/policies

Or to list all of the policies in a virtual host. For the / vhost, use %2F

curl
--request GET
--user john.doe:itsasecret
--url http://hostname:15671/api/policies/vhost001

Or to list a policy in a virtual host matching a policy name.

curl
--request GET
--user john.doe:itsasecret
--url http://hostname:15671/api/policies/vhost001/foo.policy

If no matches are found, something like this should be returned.

{
 'reason' => 'Not Found',
 'error' => 'Object Not Found'
}

On the other hand, if the policy exists, something like this should be returned.

{
  'priority' => 0,
  'pattern' => '^foo.queue',
  'vhost' => 'foo',
  'name' => 'deadletter.foo.queue.policy',
  'apply-to' => 'queues',
  'definition' => {
    'dead-letter-exchange' => 'deadletter.foo.queue.exchange',
    'max-length-bytes' => 1048576,
    'dead-letter-routing-key' => '*',
    'overflow' => 'reject-publish-dlx'
  }
}