{"name":"duration_breakdown","title":"Duration Breakdown Calculator","category":"math","description":"Elapsed time between two ISO 8601 timestamps broken into weeks/days/hours/minutes/seconds, plus running totals.","price_usd":0.001,"input_schema":{"type":"object","properties":{"start":{"type":"string","description":"Start timestamp, ISO 8601"},"end":{"type":"string","description":"End timestamp, ISO 8601"}},"additionalProperties":false,"required":["start","end"]}}