OwnTracks Location

Real-time location awareness via OwnTracks → HTTP webhook → SQLite.

Architecture

Phone (OwnTracks) → HTTP POST → server.mjs (port 18793) → SQLite + latest.json
Agent queries → places.mjs CLI or curl http://localhost:18793/latest

Setup

1. Start the receiver

node scripts/server.mjs
# Default port: 18793. Override: OWNTRACKS_PORT=9999
# Data dir override: OWNTRACKS_DATA=/path/to/data

Recommended: install as user systemd service for persistence.

mkdir -p ~/.config/systemd/user
cat << 'EOF' > ~/.config/systemd/user/owntracks-receiver.service
[Unit]
Description=OwnTracks Location Receiver
After=network.target

[Service]
Type=simple
Environment=OWNTRACKS_PORT=18793
Environment=OWNTRACKS_DATA=<SKILL_DIR>/scripts/data
ExecStart=/usr/local/bin/node <SKILL_DIR>/scripts/server.mjs
Restart=always
RestartSec=5

[Install]
WantedBy=default.target
EOF
systemctl --user daemon-reload
systemctl --user enable --now owntracks-receiver

Replace <SKILL_DIR> with the absolute path to this skill directory.

2. Configure OwnTracks on phone

1. Install OwnTracks from F-Droid or Play Store
2. Open → Menu → Preferences → Mode → HTTP
3. URL: http://<host-tailscale-ip>:18793/owntracks
4. Tap 📤 on the map to send a test ping

Phone must reach the receiver (same LAN or Tailscale).

3. Verify

curl http://localhost:18793/latest
# Should return JSON with lat, lon, acc, batt, etc.

Places CLI

Named locations with haversine distance queries.

# Add a place
node scripts/places.mjs add "Home" 41.3200 1.8900 home "Olivella"
node scripts/places.mjs add "Gym" 41.2229 1.7385 gym "Aqua Sport, Vilanova"

# Where am I? (reads OwnTracks latest + finds nearest named place)
node scripts/places.mjs where

# Find nearby places from arbitrary coordinates
node scripts/places.mjs nearest 41.22 1.74 5 500

# Search by name/category/notes
node scripts/places.mjs search "gym"

# List all
node scripts/places.mjs list
node scripts/places.mjs list gym

# Remove
node scripts/places.mjs remove "Old Place"

Agent Usage

When user asks "where am I?":

curl -s http://localhost:18793/latest
node scripts/places.mjs where

When user says "this is my X" at a location:

1. Get current coords from /latest
2. Reverse geocode via Nominatim or web search for the business name
3. node scripts/places.mjs add "<name>" <lat> <lon> <category>

Server Endpoints

Method	Path	Description
POST	/owntracks	OwnTracks webhook (expects _type: "location")
GET	/latest	Last known location
GET	/history?limit=50	Location history
GET	/health	Health check

Dependencies

• Node.js 22+
• better-sqlite3 (for places.mjs)
• OwnTracks app (Android/iOS)
• Network path from phone to receiver (Tailscale recommended)