ChatGPT
Just had an egg-white omelette.
Egg-white omelette · 280 kcal logged · meal #2
354 use cases
Agent/MCP first
ChatGPT · Claude · Gemini
100% natural language
Training · Nutrition · Analytics
your data · any agent
354 use cases
Agent/MCP first
ChatGPT · Claude · Gemini
100% natural language
Training · Nutrition · Analytics
your data · any agent
The logbook of the AI era. It writes itself
Verxion helps you become your best version faster by turning every AI agent into the engine of an automated logbook that writes your workout sessions, helps you track your diet and lets you understand exactly how you're progressing.
Verxion is an MCP-based fitness logbook for AI agents. ChatGPT, Claude, Claude Code and Cursor read and write your workouts, meals, body measurements and analytics through a single source of truth — no app to install.
- free during beta
- no credit card
Your AI agent
Message
01 / 03 TRAINING
[ THE PRODUCT ]
What you can do with Verxion.
Better question: what you can't.
BUILD
From any input, a real periodized routine.
- Attach a PDF, image or screenshot — your coach's plan parsed into a real, structured routine.
- Paste from anywhere — Strong export, forum thread, a spreadsheet, an old notebook photo.
- Dictate by voice — ChatGPT mobile, Claude Voice, any client with a microphone.
- Or just type it: "build me a 5/3/1 with conjugate accessories" — and iterate from there.
Or start from scratch and iterate forever. Verxion has no end-state — your agent sets the limits.
LOG
Log every set the way you'd write it in a notebook. Your AI does the writing.
- Log it as you rest — "bench 100 × 8 at RPE 8" → captured before you sit down.
- Drop-sets, rest-pause, myo-reps — every mini-set tracked individually, no "12-10-8" shorthand.
- Rest captured automatically. The next set sees what came before.
- PRs detected as you log — by lift, by rep range, with the date.
Every working set, every assistance, every warm-up — captured without leaving the rack.
ANALYSIS
Your week, on one screen.
- Completion + volume + a 7-day map. The week, end to end.
- Vs-last-week deltas attached — knows what's up, what's down.
- Built from your logged sessions. No spreadsheet, no charting work.
- Ask any week — current, last cycle, the deload.
Your AI reads the charts and writes you the story behind them.
[ WHY MCP-FIRST ]
Why MCP, not a native app?
-
You're already paying for it.
ChatGPT, Claude, Cursor — you probably have at least one. Verxion doesn't ask you to pay twice for a chat interface you already use every day.
-
Subscriptions beat pay-per-use.
A $20/month plan buys far more tokens than $20 of API calls hitting the same models. Providers subsidize subscriptions to win on volume — you ride that subsidy.
-
Best-in-class clients, by default.
Voice, mobile, file uploads, artifacts, multi-modal. Claude and ChatGPT ship them. I'm not reinventing the chat UI — Verxion plugs into the best one you already have.
-
Frontier models, day one.
New models land in your AI client first. You get them the moment they ship — no app update, no waiting list, no migration.
-
Local? Same logbook.
Prefer Ollama, llama.cpp, or your own MCP-compatible runtime? Same OAuth, same logbook, same 354 tools. Your data, your model.
[ IN YOUR AI ]
Wherever you ask, verxion answers.
Model-agnostic. MCP-native. Paste the config once and every AI in your stack reads and writes the same logbook.
Claude
Walk me through the last 5 sessions.
Cursor
What are my current PRs?
PR · bench 110kg
PR · squat 160kg
PR · deadlift 200kg
Any MCP client
How am I doing with my program?
training 94%
meals 88%
hydration 92%
program · week 8 / 12 [ THE CATALOG ]
Verxion lifts the data. You lift the weights.
354 use cases — and growing. Here's a sample across your training, nutrition and analysis.
Build a full mesocycle
Weeks, days, exercises, progressions. Periodized from day one.
Create a diet plan from your goals
Kcal and macros computed from your goal, phase and current training.
See an exercise's progression across months
Every set across sessions, plotted in time. Linear, plateau, or peak — at a glance.
See your active routine
Your full plan at a glance — weeks, days, next session.
Schedule a refeed window
Bump carbs for a day or a window — your AI updates the targets.
Detect a plateau on a specific lift
Same load, same reps, three sessions running gets flagged with a fix.
Pause and resume a routine
Travel, deload, illness — pause cleanly without breaking progressions.
Override a single diet day
Eating out tonight? Adjust just today's plan, not the whole week.
See PR trends across cycles
Your bench in cycle 3 vs cycle 7. Linear, plateau or regression — visible.
Suggest the next workout
Reads your plan and recovery, then proposes today's session.
Get a next-meal suggestion
Suggests a meal that fits today's remaining macros and the time of day.
This session vs the last one, side by side
Volume, RPE, sets. The diff from your last session in one view.
Edit a workout day before starting
Swap an exercise or tweak volume just for today. The routine stays intact.
Search foods by name or barcode
2.5M products via OpenFoodFacts. Scan a Greek yogurt, get the macros.
Compare this month to last
Volume, strength, adherence, sleep — month-to-month deltas on one card.
Find exercise substitutes
No barbell today? Get a movement that hits the same pattern.
Build a recipe from ingredients
Drop the ingredients and quantities — the recipe gets its own macro card.
Compare this mesocycle to the previous one
Same lifts, same weeks — the deltas from one mesocycle to the next.
Plan a drop-set with mini-set tracking
Each mini-set logs its own weight and reps. No "12-10-8" guesswork.
Save a meal to reuse it
Combos you repeat — save once, log with one tap from now on.
Track macro trends across weeks
Rolling averages of kcal, protein, carbs and fat — by week or by month.
Start a workout session
Voice or text. Your AI starts the timer and tracks every set.
Log a meal against today's plan
Macros auto-balance against your plan. Your AI flags the overflow.
Track weight, perimeters and body comp
Weekly weigh-in, monthly perimeters. Charts that survive a refeed spike.
Log a working set with RPE
Weight, reps, RPE, rest — captured mid-set. No app switching.
Log water and supplements
Hydration target by bodyweight. Supplements taken with meals or alone.
Map your contribution grid for the year
Every active day, every streak, every gap — visible at a glance.
Log cardio and steps
Treadmill, bike, run, walk. Distance, time, average HR if you have it.
Fix a meal you logged wrong
Edit weight, food or portion. The day recalculates instantly.
Check active streaks across habits
Training, meals, hydration, supplements — all your current streaks.
Recap the workout you just finished
Sets, time, PRs, average RPE — when you close the session, on one card.
Map a daily nutrition timeline
All meals logged for a day, in order. Time stamps, macros, ratios.
Spot recovery patterns
Which sessions tank your sleep the next day. The pattern emerges.
Run a post-workout assessment
How tough it was, where it failed, what to adjust next time.
Spot meal adherence gaps
Days where you missed a meal, skipped protein, or fell off the plan.
Last month's story, auto-written
Every 1st, the AI writes your recap: what worked, what stalled, next steps.
Recover personal records by exercise
All your PRs by lift, by rep range, with the date you hit them.
Build a full mesocycle
Weeks, days, exercises, progressions. Periodized from day one.
Create a diet plan from your goals
Kcal and macros computed from your goal, phase and current training.
See an exercise's progression across months
Every set across sessions, plotted in time. Linear, plateau, or peak — at a glance.
See your active routine
Your full plan at a glance — weeks, days, next session.
Schedule a refeed window
Bump carbs for a day or a window — your AI updates the targets.
Detect a plateau on a specific lift
Same load, same reps, three sessions running gets flagged with a fix.
Pause and resume a routine
Travel, deload, illness — pause cleanly without breaking progressions.
Override a single diet day
Eating out tonight? Adjust just today's plan, not the whole week.
See PR trends across cycles
Your bench in cycle 3 vs cycle 7. Linear, plateau or regression — visible.
Suggest the next workout
Reads your plan and recovery, then proposes today's session.
Get a next-meal suggestion
Suggests a meal that fits today's remaining macros and the time of day.
This session vs the last one, side by side
Volume, RPE, sets. The diff from your last session in one view.
Edit a workout day before starting
Swap an exercise or tweak volume just for today. The routine stays intact.
Search foods by name or barcode
2.5M products via OpenFoodFacts. Scan a Greek yogurt, get the macros.
Compare this month to last
Volume, strength, adherence, sleep — month-to-month deltas on one card.
Find exercise substitutes
No barbell today? Get a movement that hits the same pattern.
Build a recipe from ingredients
Drop the ingredients and quantities — the recipe gets its own macro card.
Compare this mesocycle to the previous one
Same lifts, same weeks — the deltas from one mesocycle to the next.
Plan a drop-set with mini-set tracking
Each mini-set logs its own weight and reps. No "12-10-8" guesswork.
Save a meal to reuse it
Combos you repeat — save once, log with one tap from now on.
Track macro trends across weeks
Rolling averages of kcal, protein, carbs and fat — by week or by month.
Start a workout session
Voice or text. Your AI starts the timer and tracks every set.
Log a meal against today's plan
Macros auto-balance against your plan. Your AI flags the overflow.
Track weight, perimeters and body comp
Weekly weigh-in, monthly perimeters. Charts that survive a refeed spike.
Log a working set with RPE
Weight, reps, RPE, rest — captured mid-set. No app switching.
Log water and supplements
Hydration target by bodyweight. Supplements taken with meals or alone.
Map your contribution grid for the year
Every active day, every streak, every gap — visible at a glance.
Log cardio and steps
Treadmill, bike, run, walk. Distance, time, average HR if you have it.
Fix a meal you logged wrong
Edit weight, food or portion. The day recalculates instantly.
Check active streaks across habits
Training, meals, hydration, supplements — all your current streaks.
Recap the workout you just finished
Sets, time, PRs, average RPE — when you close the session, on one card.
Map a daily nutrition timeline
All meals logged for a day, in order. Time stamps, macros, ratios.
Spot recovery patterns
Which sessions tank your sleep the next day. The pattern emerges.
Run a post-workout assessment
How tough it was, where it failed, what to adjust next time.
Spot meal adherence gaps
Days where you missed a meal, skipped protein, or fell off the plan.
Last month's story, auto-written
Every 1st, the AI writes your recap: what worked, what stalled, next steps.
Recover personal records by exercise
All your PRs by lift, by rep range, with the date you hit them.
Build a full mesocycle
Weeks, days, exercises, progressions. Periodized from day one.
See your active routine
Your full plan at a glance — weeks, days, next session.
Pause and resume a routine
Travel, deload, illness — pause cleanly without breaking progressions.
Suggest the next workout
Reads your plan and recovery, then proposes today's session.
Edit a workout day before starting
Swap an exercise or tweak volume just for today. The routine stays intact.
Find exercise substitutes
No barbell today? Get a movement that hits the same pattern.
Plan a drop-set with mini-set tracking
Each mini-set logs its own weight and reps. No "12-10-8" guesswork.
Start a workout session
Voice or text. Your AI starts the timer and tracks every set.
Log a working set with RPE
Weight, reps, RPE, rest — captured mid-set. No app switching.
Log cardio and steps
Treadmill, bike, run, walk. Distance, time, average HR if you have it.
Recap the workout you just finished
Sets, time, PRs, average RPE — when you close the session, on one card.
Run a post-workout assessment
How tough it was, where it failed, what to adjust next time.
Recover personal records by exercise
All your PRs by lift, by rep range, with the date you hit them.
Build a full mesocycle
Weeks, days, exercises, progressions. Periodized from day one.
See your active routine
Your full plan at a glance — weeks, days, next session.
Pause and resume a routine
Travel, deload, illness — pause cleanly without breaking progressions.
Suggest the next workout
Reads your plan and recovery, then proposes today's session.
Edit a workout day before starting
Swap an exercise or tweak volume just for today. The routine stays intact.
Find exercise substitutes
No barbell today? Get a movement that hits the same pattern.
Plan a drop-set with mini-set tracking
Each mini-set logs its own weight and reps. No "12-10-8" guesswork.
Start a workout session
Voice or text. Your AI starts the timer and tracks every set.
Log a working set with RPE
Weight, reps, RPE, rest — captured mid-set. No app switching.
Log cardio and steps
Treadmill, bike, run, walk. Distance, time, average HR if you have it.
Recap the workout you just finished
Sets, time, PRs, average RPE — when you close the session, on one card.
Run a post-workout assessment
How tough it was, where it failed, what to adjust next time.
Recover personal records by exercise
All your PRs by lift, by rep range, with the date you hit them.
Create a diet plan from your goals
Kcal and macros computed from your goal, phase and current training.
Schedule a refeed window
Bump carbs for a day or a window — your AI updates the targets.
Override a single diet day
Eating out tonight? Adjust just today's plan, not the whole week.
Get a next-meal suggestion
Suggests a meal that fits today's remaining macros and the time of day.
Search foods by name or barcode
2.5M products via OpenFoodFacts. Scan a Greek yogurt, get the macros.
Build a recipe from ingredients
Drop the ingredients and quantities — the recipe gets its own macro card.
Save a meal to reuse it
Combos you repeat — save once, log with one tap from now on.
Log a meal against today's plan
Macros auto-balance against your plan. Your AI flags the overflow.
Log water and supplements
Hydration target by bodyweight. Supplements taken with meals or alone.
Fix a meal you logged wrong
Edit weight, food or portion. The day recalculates instantly.
Map a daily nutrition timeline
All meals logged for a day, in order. Time stamps, macros, ratios.
Spot meal adherence gaps
Days where you missed a meal, skipped protein, or fell off the plan.
Create a diet plan from your goals
Kcal and macros computed from your goal, phase and current training.
Schedule a refeed window
Bump carbs for a day or a window — your AI updates the targets.
Override a single diet day
Eating out tonight? Adjust just today's plan, not the whole week.
Get a next-meal suggestion
Suggests a meal that fits today's remaining macros and the time of day.
Search foods by name or barcode
2.5M products via OpenFoodFacts. Scan a Greek yogurt, get the macros.
Build a recipe from ingredients
Drop the ingredients and quantities — the recipe gets its own macro card.
Save a meal to reuse it
Combos you repeat — save once, log with one tap from now on.
Log a meal against today's plan
Macros auto-balance against your plan. Your AI flags the overflow.
Log water and supplements
Hydration target by bodyweight. Supplements taken with meals or alone.
Fix a meal you logged wrong
Edit weight, food or portion. The day recalculates instantly.
Map a daily nutrition timeline
All meals logged for a day, in order. Time stamps, macros, ratios.
Spot meal adherence gaps
Days where you missed a meal, skipped protein, or fell off the plan.
See an exercise's progression across months
Every set across sessions, plotted in time. Linear, plateau, or peak — at a glance.
Detect a plateau on a specific lift
Same load, same reps, three sessions running gets flagged with a fix.
See PR trends across cycles
Your bench in cycle 3 vs cycle 7. Linear, plateau or regression — visible.
This session vs the last one, side by side
Volume, RPE, sets. The diff from your last session in one view.
Compare this month to last
Volume, strength, adherence, sleep — month-to-month deltas on one card.
Compare this mesocycle to the previous one
Same lifts, same weeks — the deltas from one mesocycle to the next.
Track macro trends across weeks
Rolling averages of kcal, protein, carbs and fat — by week or by month.
Track weight, perimeters and body comp
Weekly weigh-in, monthly perimeters. Charts that survive a refeed spike.
Map your contribution grid for the year
Every active day, every streak, every gap — visible at a glance.
Check active streaks across habits
Training, meals, hydration, supplements — all your current streaks.
Spot recovery patterns
Which sessions tank your sleep the next day. The pattern emerges.
Last month's story, auto-written
Every 1st, the AI writes your recap: what worked, what stalled, next steps.
See an exercise's progression across months
Every set across sessions, plotted in time. Linear, plateau, or peak — at a glance.
Detect a plateau on a specific lift
Same load, same reps, three sessions running gets flagged with a fix.
See PR trends across cycles
Your bench in cycle 3 vs cycle 7. Linear, plateau or regression — visible.
This session vs the last one, side by side
Volume, RPE, sets. The diff from your last session in one view.
Compare this month to last
Volume, strength, adherence, sleep — month-to-month deltas on one card.
Compare this mesocycle to the previous one
Same lifts, same weeks — the deltas from one mesocycle to the next.
Track macro trends across weeks
Rolling averages of kcal, protein, carbs and fat — by week or by month.
Track weight, perimeters and body comp
Weekly weigh-in, monthly perimeters. Charts that survive a refeed spike.
Map your contribution grid for the year
Every active day, every streak, every gap — visible at a glance.
Check active streaks across habits
Training, meals, hydration, supplements — all your current streaks.
Spot recovery patterns
Which sessions tank your sleep the next day. The pattern emerges.
Last month's story, auto-written
Every 1st, the AI writes your recap: what worked, what stalled, next steps.
[ SETUP ]
Set up Verxion in under 2 minutes.
Create your account
Sign in with Apple or Google. First sign-in creates your account.
Plug it into your AI
Pick your client. Paste the URL. OAuth handles the rest.
Install the Verxion ChatGPT App or add as a Custom Connector. OAuth signs you in.
https://verxion.ai/mcpAdd as a Connector on claude.ai — OAuth signs you in. For Claude Desktop, paste the URL into your MCP config.
https://verxion.ai/mcpAny MCP-compatible client over HTTP. Paste the URL — OAuth signs you in.
https://verxion.ai/mcpEvery new MCP client works on day one.
Train, eat, ask.
Ask your AI to build a routine, plan a diet, or kick off a full program.
- Build me a 5-day push/pull/legs
- Plan a cutting diet at 2,200 kcal
- Show me last month's progress
[ FAQ ]
Common questions.
Is my data private?
Yes. Fully GDPR-compliant, EU-hosted. Encrypted in transit and at rest. One-click export, one-click delete. No third-party tracking, no ads, no resale. See the privacy policy and sub-processors.
What does my AI provider see?
Your prompts and the result of each tool call — same as any conversation in their app. Verxion data lives on EU servers; I never send your full history to OpenAI or Anthropic. You decide what's shared by what you ask.
Why beta?
Open beta, indefinite by design. The product is solid — but I want to ship real user feedback into it before calling anything v1. Use it, break it, tell me what's missing. Soon: beta users will be able to lock a lifetime price before paid plans launch. Free, fully usable, and yours.
Will my data survive when paid plans launch?
Yes. Accounts created during beta keep their data and history.
Which AIs work today?
ChatGPT (via the verxion MCP App), Claude Desktop, Claude Code, Cursor, and any MCP-compatible client over HTTP. New clients are added as they ship MCP support.
Does voice work for logging between sets?
Yes — through your AI client's voice mode (ChatGPT voice, Claude voice). Say "logged bench 100 by 8 at RPE 8" and the set is captured. Tap-free, mid-set.
Can I use Verxion from my phone today?
Yes — through the ChatGPT mobile app, the Claude mobile app, or the web. Voice and text from your phone. The native open-source app is on the way (see roadmap).
What's on the roadmap?
Native open-source app, built in public — follow @_verxion_ on X to watch it ship. Open API for members to build their own apps on Verxion. Wearable sync (Strava, Whoop, Apple Health). Paid tiers when they're worth shipping. And more. Today: paste a Strava or Whoop export and your AI logs it for you.
How do I report bugs or send feedback?
DM @_verxion_ on X with what broke, what's missing, or what's confusing. Email works too — [email protected]. Every report shapes what ships next.
[ START NOW ]
Open your logbook.
Free during beta. No card. Sign in with Apple or Google.
OAuth-only · revoke anytime
- Free during beta
- No credit card
- Your account survives paid launch