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google-health-cli

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Updated 10-16 01:11

About this skill

google-health-cli

Skill by ara.so — Devtools Skills collection.

CLI for the Google Health API v4 built for AI agents and developers. Supports 40+ verified health data types including steps, heart rate, exercise, sleep, weight, SpO2, HRV, ECG, blood glucose, and nutrition. Outputs deterministic JSON with agent-friendly exit codes.

Installation

git clone https://github.com/Google-Health-API/google-health-cli.git
cd google-health-cli
go build -o ghealth .

Move the binary to your PATH:

sudo mv ghealth /usr/local/bin/

Authentication Setup

Interactive Setup

ghealth setup

Walks through:

  1. GCP project ID
  2. OAuth credentials (download from Console as Desktop application)
  3. Health API enablement
  4. Scope selection
  5. Browser-based OAuth login

Credentials stored in ~/.config/ghealth/ (override with GHEALTH_CONFIG_DIR):

  • client_secret.json — OAuth client (mode 0600)
  • credentials.json — access + refresh tokens (mode 0600)
  • config.toml — active profile

Non-Interactive Setup (CI/Agents)

ghealth setup \
  --project-id $GCP_PROJECT_ID \
  --client-secret ~/Downloads/client_secret.json \
  --scopes-preset readonly \
  --skip-enable-api \
  --no-prompt

Headless OAuth Flow

# 1. Start non-interactive login
ghealth auth login --non-interactive --scopes-preset readonly
# Returns JSON with auth_url and complete_command

# 2. Open auth_url in browser, copy the redirect URL or code parameter

# 3. Complete authentication
ghealth auth login --complete 'http://localhost/?code=4/0AX4XfWh...&state=cQq...'
# OR just the code:
ghealth auth login --complete 4/0AX4XfWh...

Environment Variables

# Use existing access token
export GHEALTH_ACCESS_TOKEN=ya29...

# Use custom credentials file
export GHEALTH_CREDENTIALS_FILE=/path/to/creds.json

# Custom config directory
export GHEALTH_CONFIG_DIR=/custom/config/path

Precedence: GHEALTH_ACCESS_TOKEN > GHEALTH_CREDENTIALS_FILE > stored credentials > Application Default Credentials.

Moving Tokens Between Machines

# Export on source machine
ghealth auth export > /tmp/ghealth-creds.json

# Import on target machine (requires client_secret.json)
ghealth auth import --file /tmp/ghealth-creds.json

Key Data Types

Type Key Values Operations
steps countSum (daily rollup) list, rollup, daily-rollup, reconcile
heart-rate beatsPerMinute list, rollup, daily-rollup, reconcile
exercise type, duration, calories, avgHeartRate list, get, create, update, delete, export-tcx
sleep minutesAsleep, minutesAwake, stageMinutes list, get, create, update, delete, reconcile
weight weightGrams list, get, create, update, delete, rollup, daily-rollup
distance millimetersSum (daily rollup) list, rollup, daily-rollup, reconcile
oxygen-saturation percentage (SpO2) list, reconcile
heart-rate-variability RMSSD list, reconcile
blood-glucose mg/dL, mealType, timing list, get, rollup, daily-rollup, reconcile
nutrition-log nutrients, energy, mealType list, get, rollup, daily-rollup, reconcile

Run ghealth schema types for all 40+ types.

Reading Data

Sample Data (Individual Readings)

# Recent heart rate readings
ghealth data heart-rate list --from today --limit 10

# Heart rate for specific date range
ghealth data heart-rate list --from 2026-03-22 --to 2026-03-29 --limit 100

# Oxygen saturation readings
ghealth data oxygen-saturation list --from 2026-06-01 --limit 20

# Recent weight measurements
ghealth data weight list --limit 10

Rollup Data (Aggregated)

Critical: For steps, distance, and other interval types, use daily-rollup to get actual values. list returns time intervals without totals.

# Daily step totals (CORRECT way)
ghealth data steps daily-rollup --from 2026-03-22 --to 2026-03-29
# Returns: {"dataPoints": [{"date": "2026-03-28", "countSum": "9037"}, ...]}

# Daily distance totals
ghealth data distance daily-rollup --from 2026-03-01 --to 2026-03-31

# Weekly average heart rate
ghealth data heart-rate rollup --from 2026-03-01 --to 2026-03-31 --duration 7d

# Hourly step counts for today
ghealth data steps rollup --from today --duration 1h

Exercise Data

# List recent exercises
ghealth data exercise list --from 2026-03-01 --limit 20

# Get specific exercise
ghealth data exercise get --id <exercise-id>

# Export exercise track as TCX
ghealth data exercise export-tcx --id <id> --output ride.tcx

# Export as CSV for data analysis
ghealth data exercise export-tcx --id <id> --output ride.csv --as csv
# CSV columns: time, activity, lap, sport, latitude_deg, longitude_deg, altitude_m, 
#              distance_m, heart_rate_bpm, cadence_rpm, speed_mps, watts

# Stream to stdout
ghealth data exercise export-tcx --id <id> --output - --as csv | head

Sleep Data

# Recent sleep sessions (summary)
ghealth data sleep list --limit 5

# Sleep with stage-by-stage breakdown
ghealth data sleep list --limit 5 --detail

# Specific sleep session
ghealth data sleep get --id <sleep-id>

Pagination

All list commands support pagination:

# First page (default limit 500)
ghealth data heart-rate list --from 2026-06-15 --limit 500
# Returns: {"dataPoints": [...], "nextPageToken": "ABC"}

# Next page
ghealth data heart-rate list --from 2026-06-15 --limit 500 --page-token ABC

Writing Data

Create Exercise

ghealth data exercise create \
  --start-time 2026-03-28T14:00:00Z \
  --end-time 2026-03-28T15:30:00Z \
  --type running \
  --calories 450 \
  --distance-meters 8000 \
  --avg-heart-rate 152 \
  --notes "Morning run in the park"

Update Exercise

ghealth data exercise update \
  --id <exercise-id> \
  --notes "Evening run - felt great" \
  --calories 475

Create Sleep Session

ghealth data sleep create \
  --start-time 2026-03-27T23:00:00Z \
  --end-time 2026-03-28T07:00:00Z \
  --minutes-asleep 450 \
  --minutes-awake 30

Log Weight

ghealth data weight create \
  --timestamp 2026-03-28T08:00:00Z \
  --weight-grams 75000

Delete Data

ghealth data exercise delete --id <exercise-id>
ghealth data sleep delete --id <sleep-id>
ghealth data weight delete --id <weight-id>

Agent-Friendly Patterns

Deterministic JSON Output

Every read command returns:

{
  "dataPoints": [
    {"date": "2026-03-28", "countSum": "9037"},
    {"date": "2026-03-27", "countSum": "8245"}
  ],
  "_hints": {
    "type": "steps",
    "rollupDuration": "1d"
  },
  "nextPageToken": "optional-token-if-more-data"
}

Parse with jq:

# Extract step counts
ghealth data steps daily-rollup --from 2026-03-22 --to 2026-03-29 | jq -r '.dataPoints[].countSum'

# Get total steps for week
ghealth data steps daily-rollup --from 2026-03-22 --to 2026-03-29 | jq '[.dataPoints[].countSum | tonumber] | add'

# Average heart rate
ghealth data heart-rate list --from today --limit 100 | jq '[.dataPoints[].beatsPerMinute | tonumber] | add / length'

Dry Run Mode

# Preview API request without executing
ghealth data steps daily-rollup --from today --dry-run

Raw API Response

# Get unprocessed API response
ghealth data heart-rate list --from today --limit 10 --raw

Exit Codes

  • 0 — Success
  • 1 — General error
  • 2 — Authentication/validation error
  • 3 — API error
  • 4 — Data not found
  • 5 — Configuration error

Critical Data Handling Rules

Missing Days vs. Zero Values

For presence-aware types (altitude, distance, floors, steps, total-calories):

  • Missing date → device not worn/synced — render as "no data", NOT zero
  • countSum: "0" → true zero (device worn, no activity)
# Example output:
# {"dataPoints": [
#   {"date": "2026-03-28", "countSum": "9037"},  # Active day
#   {"date": "2026-03-27", "countSum": "0"},     # Worn but sedentary
#   # 2026-03-26 missing entirely                 # Not worn - DON'T treat as 0
# ]}

Never average over absent days as if they were zeros — this silently deflates statistics.

Time Formats

  • Use ISO 8601: 2026-03-28T14:00:00Z
  • Shortcut: today, yesterday
  • Date-only: 2026-03-28 (interprets as start of day in user's timezone)
ghealth data steps daily-rollup --from 2026-03-22 --to today
ghealth data heart-rate list --from yesterday --limit 50

Common Workflows

Weekly Step Summary

#!/bin/bash
# Get last 7 days of step data
WEEK_AGO=$(date -d '7 days ago' +%Y-%m-%d)
TODAY=$(date +%Y-%m-%d)

ghealth data steps daily-rollup --from $WEEK_AGO --to $TODAY | \
  jq -r '.dataPoints[] | "\(.date): \(.countSum) steps"'

Export All Exercise Data

#!/bin/bash
# Export all exercises from a month
ghealth data exercise list --from 2026-03-01 --to 2026-03-31 | \
  jq -r '.dataPoints[].id' | \
  while read id; do
    ghealth data exercise export-tcx --id "$id" --output "exercise_${id}.csv" --as csv
  done

Daily Health Dashboard

#!/bin/bash
# Fetch today's key metrics
echo "=== Health Metrics for $(date +%Y-%m-%d) ==="

echo -n "Steps: "
ghealth data steps daily-rollup --from today --to today | jq -r '.dataPoints[0].countSum // "no data"'

echo -n "Average Heart Rate: "
ghealth data heart-rate list --from today --limit 500 | \
  jq '[.dataPoints[].beatsPerMinute | tonumber] | add / length | round'

echo -n "Weight: "
ghealth data weight list --limit 1 | jq -r '.dataPoints[0].weightGrams // "no data"'

Data Reconciliation

Check for data conflicts and resolve:

# Reconcile heart rate data
ghealth data heart-rate reconcile --from 2026-03-01 --to 2026-03-31

# Reconcile with conflict resolution strategy
ghealth data exercise reconcile --from 2026-03-01 --strategy newest

Troubleshooting

No OAuth Credentials

If you see exit code 5 with JSON error:

{
  "error": {
    "type": "config",
    "code": 5,
    "message": "No OAuth client_secret.json configured",
    "next_steps": [
      "Open https://console.cloud.google.com/apis/credentials",
      "Create or select a Google Cloud project",
      "Enable the Google Health API",
      "Create OAuth client ID with Application type: Desktop app",
      "Download the client_secret JSON",
      "Run: ghealth setup --client-secret /path/to/client_secret.json"
    ]
  }
}

Get instructions without error:

ghealth setup --instructions

Token Refresh Issues

# Check auth status
ghealth auth status

# Force refresh
ghealth auth refresh

# Re-authenticate
ghealth auth login

Empty Data Results

Check:

  1. Date range is correct (use --from and --to)
  2. Using correct command (daily-rollup vs list)
  3. OAuth scopes include necessary permissions
  4. Device has synced data
# Verify scopes
ghealth auth status | jq -r '.scopes'

# Check available types
ghealth schema types

Rate Limiting

The API has rate limits. Space out requests:

# Add delays between bulk operations
for id in $(ghealth data exercise list | jq -r '.dataPoints[].id'); do
  ghealth data exercise get --id "$id"
  sleep 1
done

Schema Exploration

# List all available data types
ghealth schema types

# Get details for specific type
ghealth schema type --name steps

# View available operations for a type
ghealth schema type --name exercise | jq -r '.operations[]'

Best Practices for Agents

  1. Always use daily-rollup for totals — list returns intervals, not sums
  2. Handle pagination — check for nextPageToken in responses
  3. Respect missing data — don't coalesce absent days to zero
  4. Use exit codes — check $? for error handling
  5. Parse with jq — all output is structured JSON under .dataPoints
  6. Set explicit date ranges — --from and --to prevent unbounded queries
  7. Use --dry-run for validation before destructive operations
  8. Store credentials securely — use environment variables for tokens