[standalone@node1:9990 /] /subsystem=undertow/server=default-server/host=default-host/filter-ref=*:read-resource-description(recursive=true)
{
    ...
        "result" => {
            "description" => "Reference to filter",
            "attributes" => {
                "predicate" => {
                    "type" => STRING,
                    "description" => "Predicates provide a simple way of making a true/false decision  based on an exchange. Many handlers have a requirement 
that they be applied conditionally, and predicates provide a general way to specify a condition.",
                    "expressions-allowed" => true,
                    "required" => false,
                    "nillable" => true,
                    "access-type" => "read-write",
                    "storage" => "configuration",
                    "restart-required" => "all-services"
                },
                "priority" => {
                    "type" => INT,
                    "description" => "Defines filter order. A lower number instructs the server to be included earlier in the handler chain than others with h
igher numbers. Values range from 1, indicating the filter will be handled first, to 2147483647, resulting in the filter being handled last.",
                    "expressions-allowed" => true,
                    "required" => false,
                    "nillable" => true,
                    "default" => 1,
                    "min" => 1L,
                    "max" => 2147483647L,
                    "access-type" => "read-write",
                    "storage" => "configuration",
                    "restart-required" => "all-services"
                }
            },
            "operations" => undefined,
            "notifications" => undefined,
            "children" => {}
        }
    }]
}

  <subsystem xmlns="urn:jboss:domain:undertow:10.0" ...>
      ...
      <server name="default-server">
          ...
          <host name="default-host" alias="localhost">
              ...
              <filter-ref name="request-limit-filter" predicate="not path-prefix('/${env.FOOBAR}')"/>
              <filter-ref name="dump-request-filter" predicate="path-prefix('/${my.predicate.path.test}')"/>
          </host>
      </server>
      ...
      <filters>
          <request-limit name="request-limit-filter" max-concurrent-requests="10" queue-size="1"/>
          <expression-filter name="dump-request-filter" expression="dump-request"/>
      </filters>
  </subsystem>

FOOBAR=example ./bin/standalone.sh -Dmy.predicate.path.test=test