{"id":"iso-week-to-date","version":"1.0.0","description":"Convert an ISO-8601 week date to a YYYY-MM-DD calendar date.","supported_operations":["iso week to date","convert iso week date to calendar date","calendar date from iso week"],"unsupported_operations":["locale week numbers","Sunday-first weeks","ISO ordinal dates","timezones","datetime output","fiscal weeks"],"semantics":["year, week, and weekday are JSON integers that pass Number.isInteger.","year is 1-9999, week is 1-53, and weekday is 1-7 with Monday=1 and Sunday=7.","Week 53 is rejected when that ISO year has only 52 weeks.","Combinations whose calendar date would fall outside years 0001-9999 are rejected.","Output date is a zero-padded YYYY-MM-DD calendar date."],"limits":{"year_min":1,"year_max":9999,"week_min":1,"week_max":53,"weekday_min":1,"weekday_max":7},"pricing":{"status":"unpriced","charge_usd":null},"input_schema":{"type":"object","additionalProperties":false,"required":["year","week","weekday"],"properties":{"year":{"type":"integer","minimum":1,"maximum":9999},"week":{"type":"integer","minimum":1,"maximum":53},"weekday":{"type":"integer","minimum":1,"maximum":7}}},"output_schema":{"type":"object","additionalProperties":false,"required":["date"],"properties":{"date":{"type":"string","minLength":10,"maxLength":10,"pattern":"^\\d{4}-\\d{2}-\\d{2}$"}}},"examples":[{"input":{"year":2026,"week":2,"weekday":4},"output":{"date":"2026-01-08"}}],"execute_url":"/v1/tools/iso-week-to-date/versions/1.0.0/execute"}