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Saylor Innovations Sleep Cycle Calculator
x402
Saylor Innovations Sleep Cycle Calculator is a paid API for AI agents from saylorinnovations.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-30).
Returns optimal bedtimes that end on a 90-minute sleep cycle boundary for a given wake time, or wake times for a given bedtime, with quality ratings and total sleep hours.
Price / call$0.01
Success—
StatusUnknown
How this service works
Bedtimes that end a 90-minute sleep cycle at a given wake time, or wake times for a given bedtime, with total sleep hours and time to fall asleep.
Output
A JSON object containing an array of candidate sleep options (for 3, 4, 5, and 6 sleep cycles) each with the corresponding bedtime or wake time, total sleep hours, cycle count, and a quality rating. Includes a best_option field highlighting the recommended 5-cycle/7.5-hour option, the cycle length in minutes, assumed minutes-to-fall-asleep, the input time echoed back, the mode (wake-time or bedtime direction), a plain-language note, and a source attribution.
Example use cases
Morning alarm back-calculation
“I have to be up at 7:00 AM for work — what are my best bedtime options so I wake up at the end of a sleep cycle instead of in the middle of one?”
Night-shift worker sleep planning
“I finish my shift at 02:00 and need to sleep — calculate the wake times that would give me complete 90-minute sleep cycles so I feel rested, starting from a 02:30 bedtime.”
Nap or short sleep optimization
“I only have a few hours to sleep before a flight — if I go to bed at 23:00, which wake time options give me the most complete sleep cycles and how many hours would that be?”
Technical details
Endpoint
GEThttps://saylorinnovations.com/api/health/sleep-cycles?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a quick, formula-based computation of sleep cycle-aligned bedtimes or wake times without requiring any personal biometric data. It is ideal for scheduling assistants, wellness apps, or alarm-planning agents that want to present users with multiple sleep window options ranked by quality. It is not a substitute for medical advice or personalized sleep tracking.
Side effects
- Missing required wake_time or bedtime parameter returns an error
- Malformed time string (not HH:MM 24-hour format) may return a parsing error or unexpected results
- No sleep option available for very short windows (e.g. only 1-2 hours available) may return empty or limited options array
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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