Whoop MCP Server

import { z } from "zod"; import type { McpServer } from "@modelcontextprotocol/sdk/server/mcp.js"; import { WhoopClient } from "../whoop-client"; export function registerHealthspanTools( server: McpServer, whoopClient: WhoopClient ) { server.registerTool( "whoop_get_healthspan", { title: "Get Whoop Healthspan (Biological Age)", description: "Get comprehensive healthspan analysis including WHOOP Age (biological age), pace of aging, and comparison to chronological age", inputSchema: { date: z .string() .optional() .describe( "Date in YYYY-MM-DD format (defaults to today if not provided)" ), }, outputSchema: { navigationTitle: z.string(), navigationSubtitle: z.string(), dateRange: z.string(), isCalibrating: z.boolean(), currentPeriod: z.object({ whoopAge: z.string(), ageStatus: z.string(), yearsDifference: z.string(), paceOfAging: z.string(), }), previousPeriod: z.object({ whoopAge: z.string(), paceOfAging: z.string(), }), }, }, async ({ date }) => { try { const data = await whoopClient.getHealthspan(date); const unlockedContent = data.unlocked_content; const currentAmoeba = unlockedContent.whoop_age_amoeba; const previousAmoeba = unlockedContent.previous_whoop_age_amoeba; const output = { navigationTitle: data.navigation_title, navigationSubtitle: data.navigation_subtitle, dateRange: unlockedContent.date_picker.current_date_range_display, isCalibrating: unlockedContent.is_calibrating, currentPeriod: { whoopAge: currentAmoeba.age_value_display, ageStatus: currentAmoeba.age_subtitle_display, yearsDifference: currentAmoeba.years_difference_value_display, paceOfAging: currentAmoeba.pace_of_aging_display, }, previousPeriod: { whoopAge: previousAmoeba.age_value_display, paceOfAging: previousAmoeba.pace_of_aging_display, }, }; const lines = [ "🧬 HEALTHSPAN (WHOOP AGE)", "═══════════════════════", "", `📅 Period: ${output.dateRange}`, `⏰ ${output.navigationSubtitle}`, "", ]; if (output.isCalibrating) { lines.push( "⚙️ CALIBRATING", " Your Healthspan is currently being calculated...", "" ); } else { lines.push( "🎯 CURRENT PERIOD", "─────────────────", ` WHOOP Age: ${output.currentPeriod.whoopAge}`, ` Status: ${output.currentPeriod.ageStatus}`, ` Years Difference: ${output.currentPeriod.yearsDifference}`, ` Pace of Aging: ${output.currentPeriod.paceOfAging}`, "", "📊 PREVIOUS PERIOD", "──────────────────", ` WHOOP Age: ${output.previousPeriod.whoopAge}`, ` Pace of Aging: ${output.previousPeriod.paceOfAging}`, "" ); const paceValue = parseFloat( output.currentPeriod.paceOfAging.replace("x", "") ); if (!isNaN(paceValue)) { lines.push("💡 INTERPRETATION", "─────────────────"); if (paceValue < 1.0) { lines.push( ` You're aging slower than average (${output.currentPeriod.paceOfAging})`, ` This means you're gaining less than 1 biological year per chronological year.`, "" ); } else if (paceValue === 1.0) { lines.push( ` You're aging at an average pace (${output.currentPeriod.paceOfAging})`, ` This means you're gaining 1 biological year per chronological year.`, "" ); } else { lines.push( ` You're aging faster than average (${output.currentPeriod.paceOfAging})`, ` This means you're gaining more than 1 biological year per chronological year.`, "" ); } } } const formattedText = lines.join("\n"); return { content: [{ type: "text", text: formattedText }], structuredContent: output, }; } catch (error) { const errorMessage = error instanceof Error ? error.message : "Unknown error"; return { content: [ { type: "text", text: `Error fetching Whoop healthspan data: ${errorMessage}`, }, ], isError: true, }; } } ); }