{"ok":true,"tool":"Pace Calculator","operation":"calculate-pace","description":"Calculate running pace and speed from distance and time.","method":"POST","endpoint":"/api/pace-calculator","webUrl":"https://ultraquick.tools/tools/pace-calculator","parameters":{"type":"object","properties":{"distance":{"type":"number","description":"Run distance"},"unit":{"type":"string","enum":["km","mi"],"description":"Distance unit"},"hours":{"type":"number","description":"Finish time hours"},"minutes":{"type":"number","description":"Finish time minutes"},"seconds":{"type":"number","description":"Finish time seconds"}},"required":["distance"]},"response":{"type":"object","properties":{"pacePerKm":{"type":"string"},"pacePerMi":{"type":"string"},"speedKmh":{"type":"number"},"speedMph":{"type":"number"}}},"example":{"request":{"distance":5,"unit":"km","minutes":25},"response_shape":{"type":"object","properties":{"pacePerKm":{"type":"string"},"pacePerMi":{"type":"string"},"speedKmh":{"type":"number"},"speedMph":{"type":"number"}}}},"howToCall":"POST a JSON body to https://ultraquick.tools/api/pace-calculator. Returns {\"ok\":true,\"result\":{...}} on success or {\"ok\":false,\"error\":\"...\"} on failure. No auth, CORS-enabled.","parametersSummary":"  distance (number, required) — Run distance\n  unit (string, optional, one of: km|mi) — Distance unit\n  hours (number, optional) — Finish time hours\n  minutes (number, optional) — Finish time minutes\n  seconds (number, optional) — Finish time seconds","curlExample":"curl -X POST https://ultraquick.tools/api/pace-calculator -H \"Content-Type: application/json\" -d '{\"distance\":5,\"unit\":\"km\",\"minutes\":25}'"}