Marathon fueling, pace, hydration, heat, carb-loading, and gel-comparison calculators.
| Endpoint | https://fuelcenter.co/api/mcp (streamable-http) |
|---|---|
| Registry version | 1.0.0 |
| Now | 7 tools · grade A (98) · pin ts_39bb196a1a038cd15be7b7ce7bd3fa76 · protocol 2025-06-18 |
| First / last listed | 2026-11-08 03:46 UTC / 2026-11-08 03:46 UTC |
| Grade over time | 2026-11-08: A (98), 7 tools |
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Tools: fueling-plan race-time-predictor pace-calculator heat-adjustment hydration carb-loading gel-comparison
fueling-plan | Build a minute-by-minute race or long-run fueling plan. Returns target carbs/hour, gel count, gel timing schedule, and total carbs. This is the core FuelCenter tool. params: hours*, minutes*, intensity*, experience, gelKey*, targetCPH, drinkMix, drinkCarbsTotal, buffer |
race-time-predictor | Predict your finish time at common distances (5K through 100 miles) from a recent race result using the Riegel formula. params: knownDistanceMiles*, knownTimeSeconds*, exponent |
pace-calculator | Given any two of distance, total time, or pace-per-mile, calculate the third. Returns pace per mile, per km, splits, and speed. params: mode*, distanceMiles, totalSeconds, paceSecondsPerMile |
heat-adjustment | Estimate how temperature and humidity will slow your race pace and change your fluid needs. Returns adjusted pace, slowdown percent, dew point, risk level, and fueling note. params: paceSecondsPerMile*, distanceMiles*, tempF*, humidity* |
hydration | Estimate fluid and sodium needs for a race or long run based on body weight, duration, intensity, temperature, and humidity. params: bodyWeightLbs*, durationMinutes*, intensity*, tempF*, humidity* |
carb-loading | Calculate pre-race carb loading targets by race type, body weight, finish time, and experience level. Returns daily carb target, protocol length, total carbs, and pre-race meal size. params: bodyWeightLbs*, raceType*, finishTimeHours*, finishTimeMinutes*, experience*, hasGIIssues |
gel-comparison | Return the FuelCenter gel catalog (SiS Beta Fuel, Maurten, Precision, GU, Tailwind, Spring, Carbs Fuel, neversecond, Huma) with carbs, price, caffeine, weight, and carbs-per-dollar. Optionally sort. params: sortKey, sortDirection |
Entries describe changes in tool definitions. They are not statements about a server, its quality or its author. The grade measures how the tool definitions fit model providers (token cost, schema compatibility, confusable names) as scored by the ToolFit engine at the time of the listing. JSON: append .json. Opt-out: how or hello@youraitools.co.