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coaching agents for athletes

The mission of HYBRD is to take world-class coaching and make it universally available. Health data has never been more abundant. GPS watches track pace and heart rate, wearables monitor sleep and recovery, and voice logging has made it easier than ever to capture weightlifting and HYROX. And yet most athletes are still following static PDF plans they found online, or "adaptive" apps that fall apart the moment cross-training enters the picture. Existing tools feel disappointing because they don’t actually know your goals and constraints, so they can’t do anything meaningful with the data they collect. HYBRD can. We aggregate your wearable data, fill the gaps with a simple AI logger, and use that complete picture to build personalized training programs from the best coaches in the world, like Alex Viada, who coined the term "hybrid athlete." From there, the HYBRD agent keeps you on track, adjusting your schedule around weather, travel, and fatigue as you progress. Everything you'd get from a $500/month coach, at a 50x lower price. Founded in 2024 by WHOOP and AWS alumni, HYBRD is built by hybrid athletes. Join us for a workout every Monday morning in San Francisco and Boston.
Active Founders
Ben Katz
Ben Katz
Founder/CEO
Co-Founder & CEO of HYBRD. Led growth at WHOOP. VP for fitness portfolio at Appex (mobile app roll-up). Ironman + ultra finisher, but weightlifter at heart.
Matt Ruiters
Matt Ruiters
Founder/CTO
🇿🇦 Co-founder & CTO of HYBRD. Former senior software engineer and “bar-raiser” at AWS. Ironman 70.3 x2, HYROX athlete, junior US national rugby team. Claude Coach in my spare time.
Caroline "Shoe" Shoemaker
Caroline "Shoe" Shoemaker
Founder
Co-founder & COO of HYBRD. First analytics team hire at WHOOP, VP for productivity portfolio at Appex (mobile app roll-up company). Ironman and HYROX athlete, former competitive swimmer. On a mission to #BeatTheBoys .
Mats Terwiesch
Mats Terwiesch
Founder/CPO
Co-founder of HYBRD. Led core product teams at WHOOP while training on the US national rowing team. Previously published health + AI research at Harvard.
Company Launches
HYBRD: turn your AI agent into a fitness coach
See original launch post

Lifters, runners, triathletes, cyclists: you can now turn your personal AI agent into a fitness coach with HYBRD. Once you connect to the HYBRD MCP, your AI agent will be able to: 

  • Access and understand all your historical training data
  • Use that data to make workouts and training plans
  • Push those recommendations to your device (watch and/or phone) so you can execute the workouts

To get set up, just paste this into Claude / Muse / Instinct: 

set up https://hybrd.com/resources/mcp-setup/skill.md

Millions of athletes already build training plans inside their favorite AI tool. But those tools have no access to wearable data, no memory from one session to the next, and no way to get a workout from the chat window onto an athlete's watch. HYBRD MCP closes that gap.

The first thing you should try with HYBRD MCP is to ask something like: 

  • Across all my runs, when did I have the best ratio between grade adjusted pace and heart rate?
  • What was my most consistent phase ever? 
  • What was the difference between my Napa Marathon prep and Boston Marathon prep?

Then have it write you a training plan for your next goal: 

  • Using the workouts I did most consistently, come up with a plan for Ironman California
  • Help me ramp back up to what I used to lift while maintaining my running volume
  • I’m traveling and will only have access to hotel gyms for a while, modify my current training plan

HYBRD will write those workouts back to your wearable and phone, so you just have to click “start” and you’ll get guided through the plan

You can also use our companion mobile app to make tracking lifting easy, or track your runs using your phone’s GPS if you don’t have a smartwatch. 

HYBRD will manage your wearables connection, be a system of record for your training plan / completed workouts, and steer LLMs towards giving better fitness coaching

The experience gets especially magical with tools like Muse or Instinct, which can proactively check the local weather, block off time on your calendar, order the right fueling for you etc. 

Sleep, recovery and nutrition data support are coming in the next few days. 

We have a few thousand athletes on HYBRD so far, check out what they’re doing with it below: 

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Previous Launches
World-class training plans personalized perfectly to you
Sync cardio, strength and wearable data for a complete view of athletic performance
Don't let cardio kill your gains.
HYBRD
Founded:2024
Batch:Fall 2024
Team Size:5
Status:
Active
Location:Boston