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Agent skill

Intervals Icu API

by LeoYeAI in LeoYeAI/openclaw-master-skills

Complete guide for accessing and managing training data with the intervals.icu API.

MITAuto-check passedProductivity & Automation

Install Intervals Icu API

skills CLI
$ npx skills add LeoYeAI/openclaw-master-skills --skill intervals-icu-api -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install LeoYeAI/openclaw-master-skills intervals-icu-api --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/LeoYeAI/openclaw-master-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/intervals-icu-api .claude/skills/intervals-icu-api && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
intervals-icu-api
GitHub stars
2.2k
Token cost
~5.5k tokens
SKILL.md length
486 words
Files
3
Skills in repo
972
Repo updated
First seen
Licence
MIT

At a glance

Complete guide for accessing and managing training data with the intervals.icu API.

  • Working with Intervals.icu athlete profiles
  • SKILL.md covers Authentication, Core Concepts, Getting Activities (Completed… and Calendar & Planned Workouts, plus 3 more sections
  • Calls curl and jq; reaches intervals.icu; needs API_KEY
  • Tasks that involve Health and fitness tracking

What it does

Intervals Icu API is an agent skill from LeoYeAI/openclaw-master-skills. Complete guide for accessing and managing training data with the intervals.icu API. Use when working with Intervals.icu athlete profiles, activities, workouts, events, wellness data, and training plans. Covers authentication, retrieving activities with combined data fields, managing calendar events with planned workouts, and creating/updating training data. Includes curl examples for all major operations.

Its SKILL.md is about 5.5k tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files (for example `README.md` and `_meta.json`).

It sits in Productivity & Automation, covering Health and fitness tracking. The repository describes itself as: 🧠 Curated collection of 1209+ best OpenClaw skills — weekly updated by MyClaw.ai. The licence is MIT.

When your agent uses it

  • Working with Intervals.icu athlete profiles
  • Tasks that involve Health and fitness tracking

Example prompts

  • “/intervals-icu-api”

Requirements

  • A credential in API_KEY
  • A credential in YOUR_API_KEY

What it can do on your machine

Read from SKILL.md and the folder at commit e5199b5. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    Shell commands in SKILL.md call:

    • curl
    • jq

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    Hosts in commands or code, which the agent is likely to contact:

    • intervals.icu

    Also links to:

    • forum.intervals.icu

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names these keys or tokens, usually read from environment variables:

    • API_KEY

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Intervals Icu API loads about 5.5k tokens when it runs. Until then it costs about 107 tokens; SKILL.md has 486 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~107
When it runs · the whole SKILL.md, loaded when a task matches
~5.5k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from LeoYeAI/openclaw-master-skills at commit e5199b5, republished under its MIT licence (© LeoYeAI). 486 words, ~5,508 tokens.

Download SKILL.mdSave it as .claude/skills/intervals-icu-api/SKILL.md (or your agent's skills folder). This skill also uses 2 other files; get the full folder from GitHub.
name
intervals-icu-api
description
Complete guide for accessing and managing training data with the intervals.icu API. Use when working with Intervals.icu athlete profiles, activities, workouts, events, wellness data, and training plans. Covers authentication, retrieving activities with combined data fields, managing calendar events with planned workouts, and creating/updating training data. Includes curl examples for all major operations.

Intervals.icu API Skill

Comprehensive guide for interacting with the intervals.icu API to manage athlete training data, activities, workouts, and calendar events.

Authentication

API Key Method

Get your Athlete ID and API Key from intervals.icu settings page.

bash
# Using API Key header
curl -H "Authorization: ApiKey API_KEY:YOUR_API_KEY" \
  https://intervals.icu/api/v1/athlete/YOUR_ATHLETE_ID
Bearer Token Method (OAuth)
bash
# Using Bearer token
curl -H "Authorization: Bearer YOUR_ACCESS_TOKEN" \
  https://intervals.icu/api/v1/athlete/YOUR_ATHLETE_ID

Base URL: https://intervals.icu/api/v1

Date Format: ISO-8601 (e.g., 2024-01-15 or 2024-01-15T10:30:00)

Core Concepts

Athlete ID

Your unique identifier in Intervals.icu. Used in all API endpoints as {id} path parameter.

Activities vs Events
  • Activities: Completed workouts with actual data (GPS, power, HR). Retrieved from /athlete/{id}/activities
  • Events: Planned workouts on your calendar. Retrieved from /athlete/{id}/events
Data Fields

Activities and events can return different fields. Use the fields query parameter to include/exclude specific data points for more efficient queries.

Getting Activities (Completed Workouts)

List Activities for Date Range

Retrieve all activities between two dates, sorted newest to oldest.

bash
# Basic activity list
curl -H "Authorization: ApiKey API_KEY:YOUR_API_KEY" \
  "https://intervals.icu/api/v1/athlete/YOUR_ATHLETE_ID/activities?oldest=2024-01-01&newest=2024-01-31"

# With limit
curl -H "Authorization: ApiKey API_KEY:YOUR_API_KEY" \
  "https://intervals.icu/api/v1/athlete/YOUR_ATHLETE_ID/activities?oldest=2024-01-01&limit=10"

# Specific fields only (more efficient)
curl -H "Authorization: ApiKey API_KEY:YOUR_API_KEY" \
  "https://intervals.icu/api/v1/athlete/YOUR_ATHLETE_ID/activities?oldest=2024-01-01&fields=id,name,start_date_local,type,distance,moving_time,icu_training_load"

# For specific activity type (Ride, Run, Swim, etc.)
curl -H "Authorization: ApiKey API_KEY:YOUR_API_KEY" \
  "https://intervals.icu/api/v1/athlete/YOUR_ATHLETE_ID/activities?oldest=2024-01-01&newest=2024-01-31" | jq '.[] | select(.type == "Ride")'
Combine Activities with External Data

Use fields parameter to combine activity data with contextual information:

bash
# Power, HR, and load data
curl -H "Authorization: ApiKey API_KEY:YOUR_API_KEY" \
  "https://intervals.icu/api/v1/athlete/YOUR_ATHLETE_ID/activities?oldest=2024-01-01&fields=name,icu_weighted_avg_watts,average_heartrate,icu_training_load,icu_atl,icu_ctl"

# Include fatigue and fitness metrics
curl -H "Authorization: ApiKey API_KEY:YOUR_API_KEY" \
  "https://intervals.icu/api/v1/athlete/YOUR_ATHLETE_ID/activities?oldest=2024-01-01&fields=id,name,type,icu_training_load,icu_atl,icu_ctl,perceived_exertion"

# Combine power zones and zone times
curl -H "Authorization: ApiKey API_KEY:YOUR_API_KEY" \
  "https://intervals.icu/api/v1/athlete/YOUR_ATHLETE_ID/activities?oldest=2024-01-01&fields=id,name,distance,moving_time,icu_zone_times,icu_weighted_avg_watts"

# HR zones + intensity data
curl -H "Authorization: ApiKey API_KEY:YOUR_API_KEY" \
  "https://intervals.icu/api/v1/athlete/YOUR_ATHLETE_ID/activities?oldest=2024-01-01&fields=id,name,type,average_heartrate,max_heartrate,icu_hr_zone_times,trimp"
Get Single Activity with Full Details
bash
# Get activity by ID with all data
curl -H "Authorization: ApiKey API_KEY:YOUR_API_KEY" \
  "https://intervals.icu/api/v1/activity/ACTIVITY_ID"

# Get activity with intervals
curl -H "Authorization: ApiKey API_KEY:YOUR_API_KEY" \
  "https://intervals.icu/api/v1/activity/ACTIVITY_ID?intervals=true"
Export Activity Streams (CSV or JSON)
bash
# Get activity streams as JSON
curl -H "Authorization: ApiKey API_KEY:YOUR_API_KEY" \
  "https://intervals.icu/api/v1/activity/ACTIVITY_ID/streams.json"

# Get activity streams as CSV (includes time, power, heart_rate, cadence, etc.)
curl -H "Authorization: ApiKey API_KEY:YOUR_API_KEY" \
  "https://intervals.icu/api/v1/activity/ACTIVITY_ID/streams.csv" \
  --output activity_streams.csv

# Get specific stream types
curl -H "Authorization: ApiKey API_KEY:YOUR_API_KEY" \
  "https://intervals.icu/api/v1/activity/ACTIVITY_ID/streams.json?types=watts,heart_rate,cadence"

Calendar & Planned Workouts

List Calendar Events (Planned Workouts)

Retrieve planned workouts, notes, and training targets from your calendar.

bash
# Get all events in date range
curl -H "Authorization: ApiKey API_KEY:YOUR_API_KEY" \
  "https://intervals.icu/api/v1/athlete/YOUR_ATHLETE_ID/events?oldest=2024-02-01&newest=2024-02-29"

# Get with specific fields
curl -H "Authorization: ApiKey API_KEY:YOUR_API_KEY" \
  "https://intervals.icu/api/v1/athlete/YOUR_ATHLETE_ID/events?oldest=2024-02-01&newest=2024-02-29&fields=id,name,category,start_date_local,description"

# Filter by category (WORKOUT, NOTE, TARGET, FITNESS_DAYS, etc.)
curl -H "Authorization: ApiKey API_KEY:YOUR_API_KEY" \
  "https://intervals.icu/api/v1/athlete/YOUR_ATHLETE_ID/events?oldest=2024-02-01&category=WORKOUT"

# Get workout targets for date range
curl -H "Authorization: ApiKey API_KEY:YOUR_API_KEY" \
  "https://intervals.icu/api/v1/athlete/YOUR_ATHLETE_ID/events?oldest=2024-02-01&category=TARGET"
Get Single Event Details
bash
# Get specific planned workout
curl -H "Authorization: ApiKey API_KEY:YOUR_API_KEY" \
  "https://intervals.icu/api/v1/athlete/YOUR_ATHLETE_ID/events/EVENT_ID"
Download Planned Workout File

Export planned workouts in various formats for your training device.

bash
# Download as .zwo (Zwift format)
curl -H "Authorization: ApiKey API_KEY:YOUR_API_KEY" \
  "https://intervals.icu/api/v1/athlete/YOUR_ATHLETE_ID/events/EVENT_ID/download.zwo" \
  --output workout.zwo

# Download as .mrc (TrainerRoad format)
curl -H "Authorization: ApiKey API_KEY:YOUR_API_KEY" \
  "https://intervals.icu/api/v1/athlete/YOUR_ATHLETE_ID/events/EVENT_ID/download.mrc" \
  --output workout.mrc

# Download as .erg (Wahoo format)
curl -H "Authorization: ApiKey API_KEY:YOUR_API_KEY" \
  "https://intervals.icu/api/v1/athlete/YOUR_ATHLETE_ID/events/EVENT_ID/download.erg" \
  --output workout.erg

# Download as .fit (Garmin format)
curl -H "Authorization: ApiKey API_KEY:YOUR_API_KEY" \
  "https://intervals.icu/api/v1/athlete/YOUR_ATHLETE_ID/events/EVENT_ID/download.fit" \
  --output workout.fit

# Download multiple workouts as zip
curl -H "Authorization: ApiKey API_KEY:YOUR_API_KEY" \
  "https://intervals.icu/api/v1/athlete/YOUR_ATHLETE_ID/workouts.zip?oldest=2024-02-01&newest=2024-02-29&ext=zwo" \
  --output workouts.zip

Creating & Writing Data

Create Manual Activity

Add a manually-logged activity to your training history.

bash
# Basic manual activity
curl -X POST \
  -H "Authorization: ApiKey API_KEY:YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "name": "Morning Run",
    "type": "Run",
    "start_date_local": "2024-01-15T06:00:00",
    "distance": 10000,
    "moving_time": 3600,
    "description": "Easy morning run"
  }' \
  https://intervals.icu/api/v1/athlete/YOUR_ATHLETE_ID/activities/manual

# With power (cycling activity)
curl -X POST \
  -H "Authorization: ApiKey API_KEY:YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "name": "Indoor Zwift",
    "type": "Ride",
    "start_date_local": "2024-01-15T18:00:00",
    "moving_time": 3600,
    "icu_joules": 900000,
    "icu_weighted_avg_watts": 250,
    "average_heartrate": 155,
    "trainer": true
  }' \
  https://intervals.icu/api/v1/athlete/YOUR_ATHLETE_ID/activities/manual

# With external ID (for syncing with external systems)
curl -X POST \
  -H "Authorization: ApiKey API_KEY:YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "name": "Strava Activity",
    "type": "Run",
    "start_date_local": "2024-01-15T07:00:00",
    "distance": 5000,
    "moving_time": 1800,
    "external_id": "strava_12345"
  }' \
  https://intervals.icu/api/v1/athlete/YOUR_ATHLETE_ID/activities/manual
Create Multiple Activities (Bulk)
bash
# Bulk create activities
curl -X POST \
  -H "Authorization: ApiKey API_KEY:YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '[
    {
      "name": "Monday Easy Run",
      "type": "Run",
      "start_date_local": "2024-01-15T06:00:00",
      "distance": 10000,
      "moving_time": 3600
    },
    {
      "name": "Tuesday Interval Ride",
      "type": "Ride",
      "start_date_local": "2024-01-16T18:00:00",
      "moving_time": 5400,
      "icu_weighted_avg_watts": 280
    }
  ]' \
  https://intervals.icu/api/v1/athlete/YOUR_ATHLETE_ID/activities/manual/bulk
Create Planned Workout (Event on Calendar)

Add a scheduled workout to your calendar for future training.

bash
# Basic planned workout
curl -X POST \
  -H "Authorization: ApiKey API_KEY:YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "name": "Vo2Max Intervals",
    "category": "WORKOUT",
    "start_date_local": "2024-02-15T18:00:00",
    "description": "6x 4min at 110% FTP with 3min recovery"
  }' \
  "https://intervals.icu/api/v1/athlete/YOUR_ATHLETE_ID/events?upsertOnUid=true"

# Planned workout with Intervals.icu format description
curl -X POST \
  -H "Authorization: ApiKey API_KEY:YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "name": "Sweet Spot Build",
    "category": "WORKOUT",
    "start_date_local": "2024-02-16T18:00:00",
    "description": "[Workout \"Sweet Spot\" \"\" Bike 300\n  [SteadyState 600 88 92 \"\"]\n  [SteadyState 600 88 92 \"\"]\n  [SteadyState 600 88 92 \"\"]\n]"
  }' \
  "https://intervals.icu/api/v1/athlete/YOUR_ATHLETE_ID/events?upsertOnUid=true"

# Create workout from .zwo file contents
curl -X POST \
  -H "Authorization: ApiKey API_KEY:YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "name": "Zwift Structured Workout",
    "category": "WORKOUT",
    "start_date_local": "2024-02-17T19:00:00",
    "file_contents": "<Workout_Instruction version=\"1\">\n<author></author>\n<name>My Workout</name>\n<description></description>\n<sportType>Bike</sportType>\n<tags></tags>\n<workout>\n<Warmup Duration=\"600\" PowerLow=\"0.5\" PowerHigh=\"0.75\"/>\n<SteadyState Duration=\"1200\" Power=\"0.85\"/>\n</workout>\n</Workout_Instruction>"
  }' \
  "https://intervals.icu/api/v1/athlete/YOUR_ATHLETE_ID/events?upsertOnUid=true"
Create Multiple Events (Bulk)
bash
# Bulk create planned workouts
curl -X POST \
  -H "Authorization: ApiKey API_KEY:YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '[
    {
      "name": "Easy Spin",
      "category": "WORKOUT",
      "start_date_local": "2024-02-15T18:00:00",
      "description": "60min at 60-65% FTP"
    },
    {
      "name": "Threshold Work",
      "category": "WORKOUT",
      "start_date_local": "2024-02-17T19:00:00",
      "description": "3x 10min at 95-105% FTP"
    },
    {
      "name": "Long Run",
      "category": "WORKOUT",
      "start_date_local": "2024-02-18T07:00:00",
      "description": "90min easy run at conversational pace"
    }
  ]' \
  "https://intervals.icu/api/v1/athlete/YOUR_ATHLETE_ID/events/bulk?upsertOnUid=true&updatePlanApplied=true"
Create Training Target (Goal for Date)

Set a specific training target for a date.

bash
# Create power target
curl -X POST \
  -H "Authorization: ApiKey API_KEY:YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "name": "FTP Test Target",
    "category": "TARGET",
    "start_date_local": "2024-02-20T18:00:00",
    "description": "Target power: 300W"
  }' \
  "https://intervals.icu/api/v1/athlete/YOUR_ATHLETE_ID/events?upsertOnUid=true"

# Create duration target
curl -X POST \
  -H "Authorization: ApiKey API_KEY:YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "name": "Daily Volume Target",
    "category": "TARGET",
    "start_date_local": "2024-02-21T00:00:00",
    "description": "Target: 2 hours training"
  }' \
  "https://intervals.icu/api/v1/athlete/YOUR_ATHLETE_ID/events?upsertOnUid=true"

Updating Data

Update Activity

Modify an existing completed activity.

bash
# Update activity notes and tags
curl -X PUT \
  -H "Authorization: ApiKey API_KEY:YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "name": "Recovery Ride - Updated",
    "description": "Felt great, good recovery",
    "commute": false
  }' \
  https://intervals.icu/api/v1/activity/ACTIVITY_ID

# Update activity perceived exertion and feel
curl -X PUT \
  -H "Authorization: ApiKey API_KEY:YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "perceived_exertion": 7,
    "feel": 8,
    "description": "Good session, felt strong"
  }' \
  https://intervals.icu/api/v1/activity/ACTIVITY_ID
Update Planned Workout (Event)

Modify a scheduled event on your calendar.

bash
# Update workout details
curl -X PUT \
  -H "Authorization: ApiKey API_KEY:YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "name": "Modified VO2Max Session",
    "description": "8x 3min at 130% FTP with 2min recovery - UPDATED"
  }' \
  https://intervals.icu/api/v1/athlete/YOUR_ATHLETE_ID/events/EVENT_ID

# Hide event from athlete view
curl -X PUT \
  -H "Authorization: ApiKey API_KEY:YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "hide_from_athlete": true
  }' \
  https://intervals.icu/api/v1/athlete/YOUR_ATHLETE_ID/events/EVENT_ID

# Prevent athlete from editing event
curl -X PUT \
  -H "Authorization: ApiKey API_KEY:YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "athlete_cannot_edit": true
  }' \
  https://intervals.icu/api/v1/athlete/YOUR_ATHLETE_ID/events/EVENT_ID
Update Multiple Events (Date Range)
bash
# Hide all workouts for a week
curl -X PUT \
  -H "Authorization: ApiKey API_KEY:YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "hide_from_athlete": true
  }' \
  "https://intervals.icu/api/v1/athlete/YOUR_ATHLETE_ID/events?oldest=2024-02-15&newest=2024-02-22"

Wellness & Recovery Data

Get Wellness Records

Track sleep, fatigue, resting HR, and other wellness metrics.

bash
# Get wellness data for date range
curl -H "Authorization: ApiKey API_KEY:YOUR_API_KEY" \
  "https://intervals.icu/api/v1/athlete/YOUR_ATHLETE_ID/wellness?oldest=2024-01-01&newest=2024-01-31"

# Get wellness data as CSV
curl -H "Authorization: ApiKey API_KEY:YOUR_API_KEY" \
  "https://intervals.icu/api/v1/athlete/YOUR_ATHLETE_ID/wellness.csv?oldest=2024-01-01&newest=2024-01-31" \
  --output wellness.csv

# Get specific wellness fields
curl -H "Authorization: ApiKey API_KEY:YOUR_API_KEY" \
  "https://intervals.icu/api/v1/athlete/YOUR_ATHLETE_ID/wellness?oldest=2024-01-01&fields=id,sleep_secs,soreness,fatigue,resting_hr,notes"
Show full SKILL.md (197 more words)Show less
Update Wellness Record

Log wellness data for a specific date.

bash
# Add sleep, HRV, and fatigue
curl -X PUT \
  -H "Authorization: ApiKey API_KEY:YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "id": "2024-01-15",
    "sleep_secs": 28800,
    "resting_hr": 52,
    "fatigue": 3,
    "soreness": 2
  }' \
  https://intervals.icu/api/v1/athlete/YOUR_ATHLETE_ID/wellness/2024-01-15

# Add notes
curl -X PUT \
  -H "Authorization: ApiKey API_KEY:YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "id": "2024-01-15",
    "notes": "Great sleep, feeling recovered"
  }' \
  https://intervals.icu/api/v1/athlete/YOUR_ATHLETE_ID/wellness/2024-01-15
Bulk Update Wellness Records
bash
# Update multiple wellness days at once
curl -X PUT \
  -H "Authorization: ApiKey API_KEY:YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '[
    {
      "id": "2024-01-15",
      "sleep_secs": 28800,
      "resting_hr": 52
    },
    {
      "id": "2024-01-16",
      "sleep_secs": 30600,
      "resting_hr": 50
    },
    {
      "id": "2024-01-17",
      "sleep_secs": 27000,
      "resting_hr": 54
    }
  ]' \
  https://intervals.icu/api/v1/athlete/YOUR_ATHLETE_ID/wellness-bulk

Sport Settings & Zones

Get Sport Settings

Retrieve power zones, HR zones, and FTP settings for a sport.

bash
# Get Ride settings
curl -H "Authorization: ApiKey API_KEY:YOUR_API_KEY" \
  "https://intervals.icu/api/v1/athlete/YOUR_ATHLETE_ID/sport-settings/Ride"

# Get Run settings
curl -H "Authorization: ApiKey API_KEY:YOUR_API_KEY" \
  "https://intervals.icu/api/v1/athlete/YOUR_ATHLETE_ID/sport-settings/Run"

# List all sport settings
curl -H "Authorization: ApiKey API_KEY:YOUR_API_KEY" \
  "https://intervals.icu/api/v1/athlete/YOUR_ATHLETE_ID/sport-settings"
Update Sport Settings

Modify power zones, FTP, or HR zones.

bash
# Update FTP and power zones
curl -X PUT \
  -H "Authorization: ApiKey API_KEY:YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "ftp": 310,
    "power_zones": [0, 114, 152, 191, 229, 267, 310]
  }' \
  "https://intervals.icu/api/v1/athlete/YOUR_ATHLETE_ID/sport-settings/Ride?recalcHrZones=false"

# Update LTHR and HR zones
curl -X PUT \
  -H "Authorization: ApiKey API_KEY:YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "lthr": 165,
    "hr_zones": [0, 123, 142, 160, 178, 197, 220]
  }' \
  "https://intervals.icu/api/v1/athlete/YOUR_ATHLETE_ID/sport-settings/Ride?recalcHrZones=true"

Common Use Cases

Workflow: Sync Training Data with External System
bash
#!/bin/bash

ATHLETE_ID="YOUR_ATHLETE_ID"
API_KEY="YOUR_API_KEY"
DATE="2024-01-15"

# 1. Get completed activities
ACTIVITIES=$(curl -s -H "Authorization: ApiKey $ATHLETE_ID:$API_KEY" \
  "https://intervals.icu/api/v1/athlete/$ATHLETE_ID/activities?oldest=$DATE&newest=$DATE&fields=id,name,type,distance,icu_training_load")

# 2. Get planned workouts for today
EVENTS=$(curl -s -H "Authorization: ApiKey $ATHLETE_ID:$API_KEY" \
  "https://intervals.icu/api/v1/athlete/$ATHLETE_ID/events?oldest=$DATE&newest=$DATE&category=WORKOUT")

# 3. Get wellness data
WELLNESS=$(curl -s -H "Authorization: ApiKey $ATHLETE_ID:$API_KEY" \
  "https://intervals.icu/api/v1/athlete/$ATHLETE_ID/wellness/$DATE")

echo "Activities: $ACTIVITIES"
echo "Events: $EVENTS"
echo "Wellness: $WELLNESS"
Workflow: Create Weekly Training Plan
bash
#!/bin/bash

ATHLETE_ID="YOUR_ATHLETE_ID"
API_KEY="YOUR_API_KEY"

# Define workouts for the week
WORKOUTS='[
  {
    "name": "Monday - Easy Spin",
    "category": "WORKOUT",
    "start_date_local": "2024-02-19T18:00:00",
    "description": "60min at 60-65% FTP"
  },
  {
    "name": "Tuesday - VO2Max",
    "category": "WORKOUT",
    "start_date_local": "2024-02-20T18:00:00",
    "description": "6x 4min at 110% FTP with 3min recovery"
  },
  {
    "name": "Wednesday - Recovery",
    "category": "WORKOUT",
    "start_date_local": "2024-02-21T18:00:00",
    "description": "45min easy"
  },
  {
    "name": "Thursday - Threshold",
    "category": "WORKOUT",
    "start_date_local": "2024-02-22T19:00:00",
    "description": "2x 15min at 95-105% FTP"
  },
  {
    "name": "Friday - Rest Day",
    "category": "NOTE",
    "start_date_local": "2024-02-23T00:00:00",
    "description": "Rest and recovery"
  },
  {
    "name": "Saturday - Long Ride",
    "category": "WORKOUT",
    "start_date_local": "2024-02-24T09:00:00",
    "description": "150min at Zone 2"
  },
  {
    "name": "Sunday - Easy Recovery",
    "category": "WORKOUT",
    "start_date_local": "2024-02-25T10:00:00",
    "description": "60min easy spin"
  }
]'

# Create all workouts at once
curl -X POST \
  -H "Authorization: ApiKey $ATHLETE_ID:$API_KEY" \
  -H "Content-Type: application/json" \
  -d "$WORKOUTS" \
  "https://intervals.icu/api/v1/athlete/$ATHLETE_ID/events/bulk?upsertOnUid=true&updatePlanApplied=true"
Workflow: Analyze Week Data
bash
#!/bin/bash

ATHLETE_ID="YOUR_ATHLETE_ID"
API_KEY="YOUR_API_KEY"

# Get activities with load and zone data for the week
curl -s -H "Authorization: ApiKey $ATHLETE_ID:$API_KEY" \
  "https://intervals.icu/api/v1/athlete/$ATHLETE_ID/activities?oldest=2024-01-08&newest=2024-01-14&fields=name,type,distance,icu_training_load,icu_zone_times,average_heartrate" | \
  jq '[.[] | {name: .name, load: .icu_training_load, zones: .icu_zone_times, hr: .average_heartrate}]'

Important Notes

Rate Limiting

Be respectful with API calls. Don't hammer the API with rapid successive requests.

Field Selection

Use the fields parameter to request only the data you need. This improves performance and reduces payload size.

Date Formats

Always use ISO-8601 format: YYYY-MM-DD or YYYY-MM-DDTHH:MM:SS

Upsert Parameter

When creating events, use upsertOnUid=true to update existing events with matching UIDs instead of creating duplicates.

External IDs

Use external_id when syncing data from other systems to avoid duplicates on re-sync.

Forum Discussion

For more detailed API information, see: API Access Forum Post

Response Status Codes

  • 200: Success
  • 201: Created successfully (activities, events)
  • 400: Bad request (invalid parameters)
  • 401: Unauthorized (invalid API key or token)
  • 404: Not found (invalid IDs)
  • 429: Rate limited (too many requests)
  • 500: Server error

Check response headers for error details and rate limit information.

© LeoYeAI, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 2 other files in skills/intervals-icu-api of LeoYeAI/openclaw-master-skills.

  • SKILL.md
  • README.md
  • _meta.json

Open the folder on GitHubat commit e5199b5

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Categories

Questions about Intervals Icu API

What does Intervals Icu API do?

Complete guide for accessing and managing training data with the intervals.icu API. Intervals Icu API is an agent skill from LeoYeAI/openclaw-master-skills.icu API.

When should I use Intervals Icu API?

Intervals Icu API fits situations like: working with Intervals.icu athlete profiles; tasks that involve Health and fitness tracking.

How do I install Intervals Icu API in Claude Code?

Run `npx skills add LeoYeAI/openclaw-master-skills --skill intervals-icu-api -a claude-code`. Or copy the skill folder (skills/intervals-icu-api in LeoYeAI/openclaw-master-skills) into .claude/skills/intervals-icu-api in your project. Claude Code loads it when a task matches its description.

How do I install Intervals Icu API in Codex?

Run `npx skills add LeoYeAI/openclaw-master-skills --skill intervals-icu-api -a codex`. Or copy the skill folder (skills/intervals-icu-api in LeoYeAI/openclaw-master-skills) into .agents/skills/intervals-icu-api in your project. Codex loads it when a task matches its description.

Can I use Intervals Icu API in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add LeoYeAI/openclaw-master-skills --skill intervals-icu-api -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/intervals-icu-api, .gemini/skills/intervals-icu-api, .github/skills/intervals-icu-api and .opencode/skills/intervals-icu-api in your project.

What does Intervals Icu API need to run?

Going by SKILL.md and its folder, Intervals Icu API needs the command-line tools its instructions call (curl and jq) and credentials named API_KEY. Our summary lists: A credential in API_KEY; A credential in YOUR_API_KEY.

Does Intervals Icu API access the network?

SKILL.md names 2 domains. In commands or code: intervals.icu; the agent is likely to contact it when it follows the instructions. As links in the text: forum.intervals.icu. This is read from the text; nothing was executed.

Is Intervals Icu API safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Intervals Icu API use?

Intervals Icu API is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Intervals Icu API use?

About 5.5k tokens (SKILL.md is roughly 22k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Intervals Icu API?

Skills that share tags, products or a category with Intervals Icu API: Strava (sundial-org/awesome-openclaw-skills, 663 stars), Fitness Analyzer (huifer/WellAlly-health, 961 stars), Coach (felixrieseberg/claude-coach, 196 stars) and Ghealth (Google-Health-API/google-health-cli, 266 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Intervals Icu API?

LeoYeAI (a GitHub user) maintains it in LeoYeAI/openclaw-master-skills, which has 2,159 GitHub stars. The repository holds 972 skills in this directory. The repository was last updated on July 20, 2026.

Source: LeoYeAI/openclaw-master-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.