// Places Grounding · Precise Positioning · Local AI

know where you are.
know what's around you.

Zephr gives AI the spatial context to answer real questions — which entrance, which side of the street, what's nearby, and what it looks like. Grounded in real places data. Precise to sub-meter.

MCP · REST API · ZephrTiles · Sub-meter Positioning

// Three pillars of spatial intelligence

The spatial stack for location-aware AI

Modular and composable — use one layer or all three. Each pillar is a complete product; together they form a full spatial intelligence platform.

Places Grounding

AI agents that understand their surroundings

Rich, AI-ready place data via MCP — stateless search, live position-aware context, or fully offline via ZephrTiles. Built on Overture Maps with AI-generated descriptions and entrances mapped to reality.

MCP Lite — stateless place search, any AI system
Egocentric MCP — live position-aware spatial context
ZephrTiles — offline, on-device, no cloud dependency

Precise Positioning

Positioning that works indoors and out

GNSS with full 6DoF orientation delivers a consistent, sub-meter fix outdoors and through urban canyons, today. Visual Inertial Odometry (VIO) and Visual Positioning (VPS) for seamless indoor handoff are coming soon. Any Android, no extra hardware. ZephrFix for field use, or integrate via the Positioning SDK.

Sub-meter GNSS accuracy, 10Hz update rate
Full 6DoF localization
Indoor VPS handoff (coming soon)

Local AI Platform

On-device intelligence, spatially grounded

Run local LLMs on mobile with full spatial context from ZephrTiles. Privacy-first, works offline, no cloud dependency. The conversational AI layer for local search and navigation.

On-device LLM with real spatial context
ZephrTiles for offline place grounding
No data leaves the device

Coming Soon

7.2×

Better than GPS

Maximum improvement factor from field tests

0.42m

2D Error

Single receiver, open-sky conditions

127

Field Tests

Urban canyons, suburban & open sky

// GNSS corrections powered by

RX Networks TruePoint →

// Real problems. Real solutions.

What Zephr solves

Three products. Each one tackles a distinct layer of the location problem — from raw precision to spatial understanding to on-device AI.

// Precise Positioning

GPS quits at the front door. We don't.

Standard GPS puts you on the wrong side of the street, the wrong entrance, the wrong floor — and indoors it drops out entirely. Zephr's GNSS holds a consistent, sub-meter fix outdoors and through urban canyons, today — with Visual Inertial Odometry and Visual Positioning carrying that fix indoors, coming soon.

// Places Grounding

AI that understands what's around you.

An AI that knows your coordinates still doesn't know if the restaurant is on your left or right, or which entrance faces the street. Zephr's places data gives models a rich, spatially-aware understanding of the real world — via MCP, REST, or offline ZephrTiles.

// Local AI

Spatial intelligence, even without signal.

In the field, underground, or anywhere the cloud isn't available — ZephrTiles brings the full intelligence stack on-device. Run local LLMs with real spatial context. No data leaves the device. No compromise on capability.

// Start building today

your app knows where it is.
does it know what's around it?

Get API access, read the docs, and ship a location-aware AI feature this week. Questions? inquiry@zephr.xyz

know where you are.know what's around you.