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The period’s most valuable drops over the accounts whose `events` the key may read: `loot` and `pk_loot` events with a value, not on a special world, highest `value_gp` first. Each entry’s `event` is exactly what `/events` serves (with `data.location` removed the same way), though it can appear here a few seconds before the `/events` cursor serves it. Default `period=day`, `limit=10` (at most 50).