Geofencing API for field service and fleet territory alerts in the US

US field-service operations — HVAC and utility technicians, home-service dispatch, regional sales territories, delivery and service fleets — all depend on the same underlying question: is this person or vehicle where they're supposed to be, and did they arrive or leave when the schedule says they should have. Manually checking that against a dispatch board doesn't scale past a handful of technicians.

Fencemaker turns that into an automated trigger layer. Define service territories or job-site zones as polygons, and a webhook fires the instant a tracked device enters, exits, or dwells.

Why this matters for US field-service operations

Territory-based accountability at scale. Sales and service territories in the US are often defined by zip code clusters or irregular regional boundaries — polygon-based zones match those boundaries precisely, where a radius approximation would misfire at the edges.

State-level privacy law shapes location-tracking obligations. With frameworks like the CCPA governing how employee and fleet location data gets handled, self-hosted deployment means retention policy is a decision your team makes directly.

How the trigger flow works

POST https://your-app.com/webhooks/fencemaker
{
  "event": "geofence.enter",
  "zone_id": "zone_service_territory_north_dallas",
  "device_id": "tech_4471",
  "timestamp": "2026-08-18T08:00:00Z",
  "coordinates": { "lat": 32.9483, "lng": -96.7299 }
}

Route that event to Slack, Telegram, or directly into your dispatch or field-service management system.

What you get out of the box

• Polygon-based territory definitions matching real service-area boundaries
• Native Slack and Telegram webhook delivery
• Dwell-time detection for flagging jobs running long or vehicles stalled unexpectedly
• Self-hosted deployment for predictable cost and full data control
• An ops portal for managing territories without engineering involvement

If your current setup relies on technicians manually logging arrival and departure, Fencemaker replaces that with automated, verifiable territory tracking.