# Biorhythm Calculator MCP > Biorhythm Calculator quantifies your three core biological cycles: physical strength, emotional state, and intellect. It analyzes these rhythms against specific dates to show you exactly when you'll be at peak capacity or facing a dip in energy. ## Overview - **Category:** productivity - **Price:** Free - **Tags:** biorhythm, biology, wellness, cycles, fitness ## Description This MCP lets you get hard numbers on how your body is working. Instead of just guessing if you feel drained today, you can check the actual standing and energy percentages for physical, emotional, and intellectual cycles for any date. You can pinpoint days where instability hits or find when you'll hit a maximum peak in one area. It gives you predictive data to plan workouts, meetings, or deep work sessions around your natural biological flow. Connecting this via Vinkius means all your preferred AI clients—Claude, Cursor, Windsurf, and VS Code—can access these insights instantly, letting you structure your life based on science, not guesswork. ## Tools ### check_critical_windows Find future dates where cycles cross zero, signaling expected biological instability or dips. ### locate_rhythm_peaks Determine the next specific date when any of your physical, emotional, or intellectual cycles hit their maximum point. ### get_rhythm_status Get a precise energy percentage reading for all three cycles on a single, chosen date. ## Prompt Examples **Prompt:** ``` What is my current biorhythm status for today? ``` **Response:** ``` The `get_rhythm_status` tool would return the current percentages and amplitudes for your physical, emotional, and intellectual cycles based on today's date. ``` **Prompt:** ``` Are there any critical days coming up next week? ``` **Response:** ``` By using `check_critical_windows` with a start and end date for next week, the tool will list any dates where your biological cycles are crossing zero. ``` **Prompt:** ``` When is my next intellectual peak? ``` **Response:** ``` The `locate_rhythm_peaks` tool can be used to find the exact date when your intellectual cycle reaches its maximum positive amplitude. ``` ## Capabilities ### Check immediate energy status Determine the current percentage levels for physical, emotional, and intellectual cycles on a specific date. ### Predict instability dates Identify future dates where your biological cycles cross zero, signaling expected periods of low energy or transition. ### Locate peak performance days Find the next date when any of your three biological cycles will reach their highest positive amplitude. ## Use Cases ### Planning a major product launch The marketing manager needs to coordinate global press events. Instead of picking arbitrary dates, they use the MCP to check critical windows for the whole team and select a week where all emotional cycles are stable and high. ### Optimizing study time for an exam A student uses `locate_rhythm_peaks` on their intellectual cycle. They then map out their review schedule, dedicating the most complex material to the peak date predicted by the tool. ### Managing seasonal fatigue A user wants to understand why they feel sluggish during certain months. They run `get_rhythm_status` across a year's worth of dates, quickly spotting predictable dips that align with known biological patterns. ### Structuring athletic training A coach needs to peak an athlete for a competition. They use the tool to locate rhythm peaks and build a taper schedule, ensuring maximum physical amplitude hits on race day. ## Benefits - Stop guessing when you'll be effective. Use `get_rhythm_status` to know exactly what energy percentages you can expect on any day, making planning immediate. - Never accidentally schedule a major project for a low point. Checking critical windows with `check_critical_windows` flags potential dips weeks in advance. - Maximize your focus. Running `locate_rhythm_peaks` tells you the exact date when your intellect is highest, so you can schedule your hardest work then. - Tailor recovery plans based on data. By knowing when cycles are low, you adjust your physical activity to prevent burnout. - Better meeting scheduling. You use this MCP to advise teams not just on what they need to do, but *when* they should do it. ## How It Works The bottom line is... it tells you when your body naturally wants to be performing at its best or when it's going through a dip. 1. You specify a target date or a range of dates you want to analyze. 2. The MCP runs its algorithms, calculating the energy percentages and identifying key cycle movements for that period. 3. You get back detailed reports showing current status, predicted low points, and optimal peak dates. ## Frequently Asked Questions **How do I use the `get_rhythm_status` tool?** You input a specific date, and the MCP returns the current energy percentages for physical, emotional, and intellectual cycles on that day. It's your snapshot of biological standing. **What does `check_critical_windows` actually find?** This tool identifies specific upcoming dates where a cycle is expected to cross zero. This signals a potential period of instability or significant drop in energy. **I need to know my next best day, so what do I use? (locate_rhythm_peaks)** Run `locate_rhythm_peaks`. It pinpoints the exact date when any of your three cycles will reach their maximum positive amplitude, telling you when you're strongest. **Is this only for fitness tracking?** No. While great for fitness, it applies to anything that requires peak mental performance, like studying or complex decision-making. It covers all three cycles. **What specific inputs does `get_rhythm_status` require?** It requires a single, specific date as input. The tool uses that day's calendar date to calculate and return the current energy percentages and amplitudes for your physical, emotional, and intellectual cycles. **If I use `check_critical_windows`, what is the effective prediction range?** The system calculates instability based on standard biorhythm models. You can predict critical windows far in advance, though the accuracy relies on continuous cycle assumptions starting from today's date. **Can I use `locate_rhythm_peaks` within a larger automation workflow?** Yes. Since this is an MCP, your AI client can call the tool function directly alongside other API calls. You simply pass the necessary date range parameters to find maximum biological strength. **Are there any limitations or rate limits when calling `get_rhythm_status` repeatedly?** Vinkius manages the backend capacity of this MCP. While high usage is generally supported, repeated, extremely rapid-fire queries may temporarily encounter throttling to maintain service stability. **What are the three biorhythm cycles?** The three primary cycles are Physical (23 days), Emotional (28 days), and Intellectual (33 days). **What is a critical day?** A critical day occurs when any of the three biological cycles cross the zero-point, indicating a period of transition and potential instability. **How can I find my next peak performance day?** You can use the `locate_rhythm_peaks` tool to identify upcoming dates when each cycle reaches its maximum positive amplitude.