Changelog

Follow new updates and improvements to Proxima Fitness.

July 30th, 2026

Exercise Explanation Improvements

Add instructions for each exercise. Perhaps write explanations for why each exercise is important, and update system prompt to explain why the exercise is important to the user for their program and them upon generation.

Content & ops polish - library, schema gaps, usage metering

As a user browsing exercises, I see complete video coverage; as ops, usage limits reset automatically without manual DB fixes.

Living loop - program improvement trigger from Hevy logs

User story: As a user who trains in Hevy, I can return to Proxima after logging workouts, ask for a log-informed program change, see the agent cite my actual sets/reps, and Sync the update back to Hevy. (Only viewable by a sub-set of users currently).

Improve Onboarding Process

Make New User Experience more seamless and add a quesionnaire to improve the tailored programming abilities.

Agent Reliability

As a user deep in the program loop, agent mutations succeed without crashes, empty days, or chat-only hallucinations β€” I don't need ChatGPT to fix my program.

Validator v1 - Constraint Profile

As a user, every agent program change passes a hard validator (structure + intake + session constraints) before Sync, so footguns are blocked and retries are constraint-aware.

Agentic Memory

Will allow the AI Agent to remember the user, their preferences and data and make better decisions every time the user interacts with it.

Ability for AI to read workout history from Hevy

Currently we only fetch the 15 most recent exercise history objects from Hevy. We need to add a new tool call where the agent can access the users Hevy workout history

June 9th, 2026

1. Fix Modify Program Tool Call

Currently the modifyProgram tool call uses JSON patches, which means occasionally it hallucinates the indexes for the patch and causes errors. I will update this to a more robust process where the tool calls call the same functions as the user does, such that there is no possibility for a patch error. This should make the ability to edit programs through the agent significantly more reliable.


2. Displaying Weight (lbs/kg) as well as RPE in the Program Builder

User can now see the weight separately from RPE and can toggle between Lbs or Kg.

3. Chat history backup + New Chat functionality

This will allow a user to have many chats that get saved to their account. Meaning they can go back in time to a program, or work on multiple programs at once.

4. Performance Improvements

Load times for images, programs, and various other issues. Using lighthouse and getting an elite performance score for the site.

5. Voice Mode + Speech to text

Allow program builder to be interfaced with through voice input.

April 5th, 2026

1. Connect all questionnaire questions to Andy AI Agent

A couple of the questionnaire options were commented out on the backend to not overwhelm the agent during development. Need to go in and uncomment them and make sure they are reflected in the generated programs through manual testing.

2. Update system prompt to prioritize adding warmup exercises

This is for people with injuries, tweaks or are lifting heavy. The agent should recommend warmup exercises for the user on a day to day basis.

3. Health Issues need to be more heavily prioritized

This may be due to the same issue of just it being commented out. But we should see through manual testing if system prompt needs to be updated to prioritize health issues.

4. Peak week questionnaire Item

Ask the user in the questionnaire if they want to do a Peak week (explain Peak week).

5. Would you like to Vary exercises question ?

Varying exercises works now, essentially like a β€œtemperature scaling” filter that increases the variance in the type of exercises suggested.

6. Add injury prevention and injury rehab exercises

Added a curated list of 40 new exercises specific to rehab. These exercises can now be exported to the Hevy app as custom exercises without the user having to do anything to set them up.

7. SKILL for weight loss, Crossfit and Hyrox

Training principles for building these types of programs

8. Ability to display and generate Rep Ranges

Rep ranges can now be exported to Hevy as well.

9. RPE now gets displayed in exercise Notes

This makes it easier to see what to do next on your sets in Hevy

10. Ability to manually create Custom Exercises

There is now a custom exercise builder on the Add Exercise Dialog, as well as the agent is able to harness a list of custom exercises.

11. Exercise Detail view & instructions

View the details view to see how to hit the lift

March 19th, 2026

  • Multi-Week Periodization is here !!! Now the program builder knows to call planProgram once: structured plan for the full mesocycle (duration, blocks, optional week-by-week progression table). Use questionnaire answers, program builder context (days/week, weeks), and loaded resources (powerlifting/bodybuilding) where relevant.

  • SKILL.md files for powerlifting programs and bodybudiling programs as well as training-principles

  • Export to Hevy and PDF added to Explore Programs (Available on Free tier)

March 16th, 2026

Workout Generation Failed Bugfix

  • Workout generation was failing when a cancelled in-progress tool call was in the next prompt message. The solution was to filter it out of the next prompt and only keep completed tool calls.

Exporting to PDF & CSV

  • PDF and CSV exports are live and available for free.

Image/File Upload

  • Uploads of images, csv files and PDF’s now available. CSV files get parsed first and then fed into the LLM, while images just get fed directly into the multi-modal model.