{"ok":true,"tool":"Week Number Calculator","operation":"calculate-week-number","description":"Return the ISO 8601 week number, ISO year, day of week, and day of year for a date.","method":"POST","endpoint":"/api/week-number-calculator","webUrl":"https://ultraquick.tools/tools/week-number-calculator","parameters":{"type":"object","properties":{"date":{"type":"string","description":"The date (YYYY-MM-DD)"}},"required":["date"]},"response":{"type":"object","properties":{"isoYear":{"type":"number"},"isoWeek":{"type":"number"},"dayOfWeek":{"type":"string"},"dayOfYear":{"type":"number"},"isLeapYear":{"type":"boolean"}}},"example":{"request":{"date":"2024-06-15"},"response_shape":{"type":"object","properties":{"isoYear":{"type":"number"},"isoWeek":{"type":"number"},"dayOfWeek":{"type":"string"},"dayOfYear":{"type":"number"},"isLeapYear":{"type":"boolean"}}}},"howToCall":"POST a JSON body to https://ultraquick.tools/api/week-number-calculator. Returns {\"ok\":true,\"result\":{...}} on success or {\"ok\":false,\"error\":\"...\"} on failure. No auth, CORS-enabled.","parametersSummary":"  date (string, required) — The date (YYYY-MM-DD)","curlExample":"curl -X POST https://ultraquick.tools/api/week-number-calculator -H \"Content-Type: application/json\" -d '{\"date\":\"2024-06-15\"}'"}