/observations/<seriesCode>/json. To request multiple codes in one call, comma-separate them (practical Valet limit is about 10 to 15 codes per request)./boc/catalog for recommended codes. Time-window parameters mirror the Valet API.x-api-key: ********************curl --location '/api/v1/boc/series/AVG.INTWO?recent=30&recent_weeks=4&recent_months=6&recent_years=5&start_date=2025-01-01&end_date=2026-04-17' \
--header 'x-api-key: <api-key>'