kumomta/docs/reference/events/get_egress_pool.md

kumo.on('get_egress_pool', function(pool_name))

kumo.on('get_egress_pool', function(pool_name)
  return kumo.make_egress_pool {
    name = pool_name,
    entries = {
      { name = 'ip-1' },
    },
  }
end)

See also kumo.make_egress_source.