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livetrack-mcp

Autonomous MCP server that polls Garmin LiveTrack, stores time-series in SQLite, and triggers Claude analysis every 10 minutes via claude-runner.

Architecture

Garmin LiveTrack URL
    │
    │  (poll every 60 s)
    ▼
livetrack-mcp (port 38100)
    ├── poller.py      — fetch trackpoints from Garmin API
    ├── store.py       — SQLite time-series persistence (/data/livetrack.db)
    ├── tracker.py     — asyncio scheduling + race-end detection
    └── analyzer.py    — build prompt, call claude-runner
         │
         │  POST /run (fire-and-forget)
         ▼
    claude-runner (port 38095)
         │
         │  claude -p <analysis prompt>
         ▼
    Claude (sonnet)
         ├── analyze timeseries
         ├── curl POST /control if thresholds need adjustment
         └── mcp__telegram__send_message → coaching push

Key design: livetrack-mcp is fully autonomous — no Claude session needs to stay alive during the race. Claude is called as a stateless analysis function every 10 minutes. If claude-runner is temporarily unavailable, the next analysis cycle retries automatically.

MCP Tools

Tool

Description

start_tracking(url, race_config)

Start polling a LiveTrack share URL

stop_tracking()

Stop polling (also auto-stops at race end)

get_tracking_status()

Active state, elapsed time, stale time, poll errors

get_timeseries(minutes=10)

Recent data from SQLite

update_thresholds(updates)

Update HR/power thresholds mid-race

trigger_analysis()

Manual on-demand analysis, bypassing schedule

Custom HTTP Endpoints

Endpoint

Method

Description

/control

POST

Update thresholds mid-race (called by Claude via curl in Bash tool)

/health

GET

Health check — tracking state + store stats

/control usage (from Claude's analysis prompt)

curl -sf -X POST http://localhost:38100/control \
  -H 'Content-Type: application/json' \
  -d '{"power_max": 150}'

Allowed fields: hr_max, hr_min, power_max, power_min, cadence_min, run_hr_max, run_hr_min, run_cadence_min

race_config Fields

Field

Type

Default

Description

hr_max

int

Cycling HR ceiling (bpm)

hr_min

int

Cycling HR floor

power_max

int

ERG power ceiling (watts)

power_min

int

ERG power floor

cadence_min

int

Minimum cycling cadence (rpm)

run_hr_max

int

Run HR ceiling

run_hr_min

int

Run HR floor

run_cadence_min

int

Minimum run cadence (spm)

poll_interval_secs

int

60

How often to poll LiveTrack

analyze_interval_secs

int

600

How often to trigger Claude analysis

analyze_window_min

int

10

Data window passed to Claude (minutes)

Example race_config for a full triathlon

{
  "race_name": "CT2026",
  "race_type": "triathlon",
  "hr_max": 144,
  "hr_min": 115,
  "power_max": 165,
  "cadence_min": 82,
  "run_hr_max": 152,
  "run_hr_min": 125,
  "run_cadence_min": 165,
  "poll_interval_secs": 60,
  "analyze_interval_secs": 600,
  "analyze_window_min": 10
}

Race-End Detection

The server auto-stops when:

  • No new trackpoints for ≥ 15 minutes (STALE_STOP_MIN)

  • AND total elapsed time ≥ 30 minutes (MIN_ELAPSED_MIN)

This handles the Garmin 24-hour URL delay: the URL remains valid after the race, but new trackpoints stop arriving when the athlete finishes. The 30-minute minimum prevents false stops at the start when GPS data is sparse.

Configuration (Environment Variables)

Variable

Default

Description

PORT

38100

Server port

HOST

0.0.0.0

Bind address

MCP_PATH

/mcp

MCP endpoint path

DB_PATH

/data/livetrack.db

SQLite database path

CLAUDE_RUNNER_URL

http://localhost:38095

claude-runner base URL

RUNNER_WORKSPACE

training

Workspace for claude-runner tasks

LOG_LEVEL

INFO

Logging level

OTEL_EXPORTER_OTLP_ENDPOINT

OpenTelemetry collector URL (optional)

Deployment

cd ~/ai-platform/mcps

# Build and start
docker compose up -d --build livetrack-mcp

# Logs
docker compose logs -f livetrack-mcp

# Restart
docker compose restart livetrack-mcp

# Health check
curl http://localhost:38100/health

Typical Session (via Claude in training workspace)

# Start tracking
use_mcp_tool livetrack-mcp start_tracking \
  url="https://livetrack.garmin.com/session/.../token/..." \
  race_config={"hr_max": 144, "power_max": 165, "run_hr_max": 152}

# Check status
use_mcp_tool livetrack-mcp get_tracking_status

# Manual analysis trigger
use_mcp_tool livetrack-mcp trigger_analysis

# Stop (or let it auto-stop)
use_mcp_tool livetrack-mcp stop_tracking

Project Structure

livetrack_mcp/
├── Dockerfile
├── pyproject.toml
├── README.md
└── src/livetrack_mcp/
    ├── __init__.py
    ├── __main__.py
    ├── otel.py        # OpenTelemetry setup
    ├── poller.py      # Garmin LiveTrack URL parsing + HTTP fetch
    ├── store.py       # SQLite time-series (sqlite3 + asyncio.to_thread)
    ├── tracker.py     # Scheduling (asyncio.create_task) + race-end detection
    ├── analyzer.py    # Prompt builder + claude-runner caller
    └── server.py      # FastMCP tools + /control + /health
A
license - permissive license
-
quality - not tested
C
maintenance

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