Intervals.icu + AI coach

AI coach for Intervals.icu athletes

Intervals.icu already knows your training history. STAS turns that data into coaching context for ChatGPT or Claude, so the AI can explain your fitness, fatigue, plan, and next decisions from real data.

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Quick answer

STAS is not an Intervals.icu replacement. It is the coaching layer on top: Intervals.icu stores and analyzes the data, while STAS prepares it for a useful AI conversation.

Works with workouts and calendar data from Intervals.icu.
Gives ChatGPT or Claude recent load, fitness, fatigue, and context.
Can help adjust a week around recovery, travel, or missed workouts.
Keeps Intervals.icu as the source of truth for the plan.

What an Intervals.icu AI coach should do

A useful AI coach needs more than a prompt. It needs your actual training history, current state, and planned work.

Explain current condition

Ask why your form is falling, whether fatigue is building, or what the last two weeks say about your readiness.

Review workouts in context

A hard session means different things after a recovery week, a race block, or a month of rising load.

Adjust the calendar

Use real planned workouts from Intervals.icu before changing the next few days.

Keep the plan explainable

The AI should say why it suggests a change, not just produce another generic plan.

What data STAS can bring into the chat

The goal is not to dump raw files into AI. STAS prepares the parts that make coaching decisions better.

Training history

Recent workouts, sport mix, distance, time, heart rate, pace, load, and workout classification.

Fitness and fatigue

CTL, ATL, TSB, ramp rate, and recent changes in load across running, cycling, and mixed weeks.

Calendar and strategy

The live Intervals.icu plan, your goals, constraints, and longer-term preparation logic.

Recovery signals

Wellness, HRV, sleep, and subjective reports when those signals are available.

How to use it

Connect your watch to Intervals.icu

Garmin, COROS, Polar, Suunto, Amazfit, and other sources should sync into Intervals.icu first.

Sign in to STAS

Use Intervals.icu login. STAS reads the data needed for coaching and keeps Intervals.icu as the data source.

Open ChatGPT or Claude

Ask for a condition review, a workout explanation, or an adjustment to the next training week.

Confirm before changing the plan

Use the AI to reason through changes, then write the final plan back to Intervals.icu when you are ready.

How STAS differs from other options

Generic ChatGPT

Good at explaining concepts, weak at coaching if it cannot see your real training history.

PacePartner / ICU Coach

Purpose-built Intervals.icu AI tools are useful. STAS is positioned for athletes who want ChatGPT or Claude to explain decisions from the same training data.

STAS + Intervals.icu

Keeps your training data in Intervals.icu and makes AI coaching conversational, explainable, and data-aware.

FAQ

Does STAS replace Intervals.icu?

No. Intervals.icu remains the training data and calendar layer. STAS adds an AI coaching layer on top of that data.

Can ChatGPT read Intervals.icu directly?

Not by default. STAS handles the connection and prepares the training context that ChatGPT or Claude needs.

Is this only for runners?

Running is the strongest entry point, but STAS also understands cycling and mixed endurance weeks through Intervals.icu data.

What should I ask first?

Start with: “Review my current condition and explain what matters most this week.” Then ask for a plan adjustment if needed.

Turn your Intervals.icu data into coaching context

Connect Intervals.icu, open STAS in ChatGPT or Claude, and start with a real review of your current condition.