# Sleep Cycle Calculator MCP > Sleep Cycle Calculator helps you find ideal wake-up and bedtime windows based on your body's natural sleep rhythms. It calculates optimal times using full 90-minute cycles, factoring in a typical 15-minute latency period so you don't wake up groggy. Use this MCP to optimize rest periods and align your schedule with your biology. ## Overview - **Category:** productivity - **Price:** Free - **Tags:** sleep, wellness, optimization, circadian, rest ## Description Tired of setting alarms that wake you halfway through deep sleep? This MCP helps you plan your rest around your body’s natural 90-minute cycles. Instead of picking random times, it calculates optimal windows so when your alarm goes off, you're naturally finishing a sleep cycle, minimizing grogginess and maximizing recovery. You can use the tool to figure out ideal wake-up slots based on when you plan to go to bed. Need to make sure you get enough rest for a specific meeting? Just tell it what time you need to wake up, and it figures out when you should start your night. It even assesses if the total sleep duration you're aiming for is actually sufficient or optimal. Finding this kind of scheduling math used to require looking up complex formulas online; now, connecting through Vinkius makes accurate rest planning available right where you work. ## Tools ### calculate_bedtimes Gets ideal bedtime options based on a required wake-up time. ### calculate_wake_times Calculates potential wake-up times if you know your planned bedtime. ### assess_sleep_window Determines whether a given total sleep duration is considered optimal for human rest. ## Prompt Examples **Prompt:** ``` I want to go to sleep at 23:00. When should I wake up? ``` **Response:** ``` Based on a 23:00 bedtime, your ideal wake-up times are 00:45, 02:15, 03:45, 05:15, and 06:45. ``` **Prompt:** ``` I need to wake up at 07:00. What time should I go to bed? ``` **Response:** ``` To wake up at 07:00, you should aim to fall asleep at 23:15, 01:45, or 04:15. ``` **Prompt:** ``` Is 420 minutes of sleep enough? ``` **Response:** ``` A duration of 420 minutes is classified as Optimal for your sleep window. ``` ## Capabilities ### Determine Ideal Wake Times Calculates the best wake-up times given a planned bedtime. ### Plan Optimal Bedtimes Figures out when you should fall asleep to meet a specific required wake-up time. ### Assess Sleep Quality Checks if the total sleep duration you plan falls into optimal or insufficient categories. ## Use Cases ### The transatlantic traveler needs a quick bedtime fix. A consultant landing in London at 9 AM knows they need to wake up by 7 AM local time, but wants to know what time she should even start preparing for sleep. She asks her agent to calculate_bedtimes using the target 7:00 AM wake-up time, instantly getting three optimal bedtime options (like 1:45 AM or 4:15 AM) that keep her aligned with natural cycles. ### The student needs a guaranteed good night's sleep. A college student has an 8-hour block of study time and estimates she will only get 360 minutes of sleep. She runs assess_sleep_window with 360 minutes and the system correctly flags it as insufficient, prompting her to adjust her schedule before she even hits the pillow. ### The shift worker needs a reliable wake-up time. A hospital orderly has to be awake at 10:30 AM but doesn't want to feel rough. They ask their AI client about calculate_wake_times based on an 8 PM bedtime, and the tool returns ideal windows like 12:45 PM or 02:15 PM, giving them reliable options that respect natural sleep cycles. ### Coordinating rest across different zones. A manager is planning a team retreat and needs everyone to be ready for an early start. She uses calculate_bedtimes with the target wake-up time of 6:30 AM, ensuring that every required arrival date has a recommended bedtime that maximizes quality sleep. ## Benefits - Plan bedtime around required wake-ups: If you know when you need to be functional, use the calculate_bedtimes tool. It tells you exactly what time you should start winding down so you can wake up on time and ready. - Minimize morning grogginess: Use calculate_wake_times to see all your ideal options if you set a bedtime. You'll pick a cycle that puts you at the natural end of a sleep phase, not in the middle of one. - Verify total rest duration: Don't trust simple math. run assess_sleep_window to check if 480 minutes is actually enough for deep recovery or if you need more time. - Save planning time: Instead of manually calculating complex cycles and latency, your AI client handles all the math instantly, letting you focus on what needs doing with your rest period. - Adapt to irregular schedules: Whether you're dealing with travel or late shifts, this MCP ensures your sleep schedule always aligns with biological reality. ## How It Works The bottom line is you get mathematically optimized sleep schedules that fit your life. 1. Tell your AI client what time you need to wake up, or when you plan to start your bedtime. 2. The MCP processes this input, running the necessary calculations for 90-minute cycles and latency periods. 3. It returns a list of ideal times—either suggested bedtimes or recommended wake-up windows. ## Frequently Asked Questions **Does the Sleep Cycle Calculator MCP account for latency?** Yes. The tool automatically accounts for a standard 15-minute sleep latency period, ensuring that the calculated times are realistic to fall asleep at and wake up from. **How do I use calculate_wake_times with this MCP?** You provide your planned bedtime. The tool then returns multiple ideal wake-up times (e.g., 01:45, 03:15) that fall at the end of a natural sleep cycle. **Is assess_sleep_window always accurate?** It provides a classification based on established biological standards, telling you if the duration is Optimal or insufficient. It's a guideline, not a guarantee. **Can I use calculate_bedtimes to plan for an early start?** Absolutely. If you need to wake up at 5:00 AM, the tool will recommend ideal bedtime options that allow you to hit your target wake-up time while respecting sleep cycles. **What if my schedule is highly irregular?** You can still use this MCP. Just input your required wake-up time or planned bedtime for the day, and it will generate optimized options based on those specific inputs.