Garmin Frisbee Analysis#

Analyze Garmin health and performance data specifically for Ultimate Frisbee players. Generate interactive HTML dashboards for post-game review, tournament fatigue tracking, training load optimization, and season-long trend comparison.

Two Installation Paths#

1. Clawdbot Skill (this guide) — Use with Clawdbot for natural language queries and proactive monitoring
2. MCP Server ( see MCP setup guide) — Use with Claude Desktop as an MCP server

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Setup (first time only)#

1. Install Dependencies#

bash

pip3 install -r requirements.txt

Pinned versions are in requirements.txt:

• garminconnect>=0.2.19 — Garmin Connect API client
• fitparse>=3.2.0 — FIT file parsing for activity data
• gpxpy>=1.3.5 — GPX file parsing

2. Configure Credentials#

Why email + password? Garmin does not expose a public OAuth API. The garminconnect library authenticates via Garmin's SSO, the same flow as the Garmin Connect mobile app. The password is used once during login and is never written to disk or logged. The resulting session token is then stored locally at ~/.clawdbot/garmin/ (permissions 700); all subsequent API requests use that token, not the password.

Set GARMIN_EMAIL and GARMIN_PASSWORD in your shell profile ( ~/.zshrc or ~/.bashrc):

bash

export GARMIN_EMAIL="your-email@example.com"
export GARMIN_PASSWORD="your-password"

3. Authenticate#

bash

python3 scripts/garmin_auth.py login
python3 scripts/garmin_auth.py status   # verify

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Frisbee Scripts#

Post-Game / Post-Training Analysis#

Analyze a single activity in depth: sprints, speed, heart rate zones.

bash

# Most recent activity
python3 scripts/frisbee_activity.py --latest

# Specific date
python3 scripts/frisbee_activity.py --date 2026-03-08

# Specific activity ID
python3 scripts/frisbee_activity.py --activity-id 12345678

# Save to file
python3 scripts/frisbee_activity.py --latest --output ~/Desktop/game.html

Dashboard includes:

• Summary cards: duration, distance, sprint count, top speed, sprint fatigue index, high-intensity distance
• Speed timeline with sprint highlight bands
• Sprint peak speed trend (detects fatigue: are later sprints slower?)
• Heart rate zone distribution (Zone 1–6)

Sprint detection: speed > 14.4 km/h sustained ≥ 2 seconds. Sprint Fatigue Index: last 3 sprint peaks ÷ first 3 sprint peaks. < 0.85 = significant fatigue.

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Tournament Review Dashboard#

Full overview of a multi-day tournament: fatigue curve, game intensity, heart rate recovery, overnight sleep/HRV.

bash

python3 scripts/frisbee_tournament.py \
  --start 2026-03-08 \
  --end 2026-03-10 \
  --name "Spring Tournament 2026" \
  --output ~/Desktop/tournament.html

Dashboard includes:

• Body Battery fatigue curve across tournament days (includes day-before baseline)
• Per-game avg/max heart rate comparison
• Heart Rate Recovery curves post-game (30 min window, all games overlaid)
• Overnight sleep hours + HRV per tournament night
• Activity table with all detected games

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Comparison Analysis#

Compare training sessions, games, or the full season.

bash

# Training vs training (last 90 days)
python3 scripts/frisbee_compare.py --mode training --days 90

# Game vs game
python3 scripts/frisbee_compare.py --mode tournament --days 180

# Training intensity vs game intensity
python3 scripts/frisbee_compare.py --mode cross --days 60

# Full season overview
python3 scripts/frisbee_compare.py --mode season --days 180

# Save output
python3 scripts/frisbee_compare.py --mode season --days 180 --output ~/Desktop/season.html

Activity classification uses name keywords:

• Game: game, match, tournament, vs, finals
• Training: practice, training, train, drill, scrimmage

Dashboard includes:

• Top speed trend over time (training vs game color-coded in cross mode)
• Avg heart rate per activity (color by intensity)
• Morning HRV on day of each activity
• Volume trend: duration + distance over time
• Full activity table

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General Garmin Data#

bash

# Sleep
python3 scripts/garmin_data.py sleep --days 14

# Body Battery
python3 scripts/garmin_data.py body_battery --days 30

# HRV
python3 scripts/garmin_data.py hrv --days 30

# Heart rate
python3 scripts/garmin_data.py heart_rate --days 7

# Activities
python3 scripts/garmin_data.py activities --days 30

# Stress
python3 scripts/garmin_data.py stress --days 7

# Combined summary
python3 scripts/garmin_data.py summary --days 7

# Custom date range
python3 scripts/garmin_data.py sleep --start 2026-01-01 --end 2026-01-15

General Health Charts#

bash

python3 scripts/garmin_chart.py sleep --days 30
python3 scripts/garmin_chart.py body_battery --days 30
python3 scripts/garmin_chart.py hrv --days 90
python3 scripts/garmin_chart.py activities --days 30
python3 scripts/garmin_chart.py dashboard --days 30

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Answering Frisbee Questions#

Player asksScriptWhat to report"How many sprints did I hit?"frisbee_activity.py --latestsprint_count, sprint fatigue index"What was my top speed?"frisbee_activity.py --latesttop_speed_kmh from summary"Was I fatigued at the end?"frisbee_activity.py --latestsprint_fatigue_index < 0.85 = yes"How long was my heart rate elevated?"frisbee_activity.py --latestZone 4-6 time percentage"Did I recover fast enough between points?"frisbee_tournament.pyHRR curves, slope comparison"Was I ready for the tournament?"frisbee_tournament.pyPre-game Body Battery values"Is my training intense enough?"frisbee_compare.py --mode crossAvg HR: training vs game"Am I improving this season?"frisbee_compare.py --mode seasonTop speed + HRV trends"How did I sleep during the tournament?"frisbee_tournament.pyRecovery nights chart

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Data Availability (Garmin 265S)#

MetricAvailableSprint count & speed✅ FIT file analysisTop speed✅ FIT file speed fieldSprint fatigue index✅ Computed from speed time-seriesHeart rate zones✅ FIT file HR + max HRHeart Rate Recovery (HRR)✅ Intraday HR time-seriesBody Battery✅ Garmin APIHRV (overnight)✅ Garmin APISleep stages & score✅ Garmin APITotal distance✅ FIT file + Garmin APIHigh-intensity distance✅ Computed from speed thresholdGround Contact Time❌ Requires HRM-Run Pod (not wrist)

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Key Frisbee Metrics Explained#

Sprint Fatigue Index#

Ratio of last 3 sprint peak speeds to first 3: ≥ 0.95 stable, 0.85–0.95 mild decline, < 0.85 significant fatigue. Use this to judge if you're losing speed output as the game progresses.

Heart Rate Recovery (HRR)#

How fast your HR drops after game ends. Steeper curve = better cardiovascular fitness and recovery. Flatter curves in later games of a tournament = cumulative fatigue.

Body Battery (0–100)#

Pre-game value is the key readiness indicator. ≥ 70 = ready to go, 50–69 = manageable, < 50 = compromised performance likely.

Heart Rate Zones#

• Zone 4 (70–80% max): Sustained hard effort — hallmark of well-executed frisbee
• Zone 5–6 (80–100% max): Explosive sprints and close contests
• High Zone 4–6 in training = adequate game-prep intensity

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Troubleshooting#

• "FIT file download failed": Check activity ID; some activity types may not export FIT
• No sprints detected: Activity may not include speed data, or you used a non-GPS mode
• HRR chart empty: Intraday HR not available for that date; ensure "All-day HR monitoring" is on in Garmin settings
• Activities not classified: Name your activities with keywords like "game vs X" or "practice" — see classification keywords above
• Tokens expired: Re-run python3 scripts/garmin_auth.py login

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Privacy & Security#

Credentials

• GARMIN_EMAIL and GARMIN_PASSWORD are read from environment variables at runtime only
• The Garmin password is never written to disk or logged — used only during the authentication step, then discarded
• No config file stores credentials

Session tokens

• Stored in ~/.clawdbot/garmin/ with directory permissions 700 (owner read/write/execute only)
• Managed by the garth library (part of garminconnect); format is an opaque token bundle, not plaintext password
• To revoke: rm -rf ~/.clawdbot/garmin/ — next login will re-authenticate

Network

• Credentials are used only to authenticate with Garmin Connect and are not transmitted to any third-party service
• All API calls go to connect.garmin.com only
• Generated HTML dashboards load Chart.js from cdn.jsdelivr.net (versions pinned: chart.js@4.4.0, chartjs-plugin-annotation@3.0.1) — requires internet access when viewing dashboards

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References#

• references/api.md — Garmin Connect API details
• references/health_analysis.md — Science-backed metric interpretation
• references/mcp_setup.md — Claude Desktop MCP setup

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Version Info#

• Version: 1.1.3
• Created: 2026-03-11
• Updated: 2026-03-16
• Author: Evelyn & Claude
• License: MIT
• Dependencies: garminconnect, fitparse, gpxpy