{"endpoint":"/history/prices/stats","method":"POST","content_type":"application/json","inputSchema":{"type":"object","required":["period"],"properties":{"period":{"type":"string","pattern":"^(?:last-[1-9][0-9]*d|[0-9]{4}(?:-Q[1-4]|-(?:0[1-9]|1[0-2]))?)$","examples":["last-7d","last-30d","2025-Q4","2024-01"]}},"additionalProperties":false},"requestExample":{"period":"last-7d"}}