{ "operation": "get-historical-metadata", "method": "GET", "path": "/api/v1/pricing/{trading_item_id}/metadata", "summary": "", "request": { "body": null }, "response": { "status": 200, "body": { "currency": "string", "symbol": "string", "exchange_name": "string", "instrument_type": "string", "first_trade_date": "2026-05-23" } } }