# Services from api.geoprimitives.dev on Zero

> api.geoprimitives.dev serves 6 paid API services for AI agents, indexed by Zero. Each is callable per call with payment handled by Zero.

Canonical page: https://www.zero.xyz/host/api.geoprimitives.dev
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/api.geoprimitives.dev/health.json

## Services

- [geoprimitives GeoJSON Validator](https://www.zero.xyz/c/geoprimitives-geojson-validator-15df9e4c/llms.txt): $0.005/call via x402. Validates a GeoJSON document against RFC 7946 and returns a structured, indexed list of errors and warnings with precise feature, geometry, ring, and position references.
- [Geoprimitives Timezone Lookup](https://www.zero.xyz/c/geoprimitives-timezone-lookup-e869399e/llms.txt): $0.005/call via x402. Returns the IANA timezone identifier, UTC offset, DST status, and local wall-clock time for any latitude/longitude coordinate, optionally at a specified historical or future instant.
- [geoprimitives Ground Elevation Lookup](https://www.zero.xyz/c/geoprimitives-ground-elevation-lookup-1acfb219/llms.txt): $0.005/call via x402. Returns ground elevation in metres above NAVD88 for a given latitude/longitude coordinate, sourced from the USGS 3D Elevation Program seamless DEM, currently covering Alaska only.
- [geoprimitives US Geography FIPS Lookup](https://www.zero.xyz/c/geoprimitives-us-geography-fips-lookup-bab2f16f/llms.txt): $0.01/call via x402. Returns Census FIPS codes (state, county GEOID, and congressional district GEOID) for any latitude/longitude point within the United States.
- [geoprimitives Marine Depth Lookup](https://www.zero.xyz/c/geoprimitives-marine-depth-lookup-bc151f46/llms.txt): $0.005/call via x402. Returns charted water depth range, nearest sounding distance, and NOAA ENC zone of confidence for a given latitude/longitude in southeast and southcentral Alaska.
- [geoprimitives Marine Hazards](https://www.zero.xyz/c/geoprimitives-marine-hazards-b657db77/llms.txt): $0.005/call via x402. Returns all charted underwater rocks, obstructions, and wrecks within a radius of a given lat/lon, sorted nearest-first with depth, water level effect, name, and geodesic distance.

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

- [Zero catalog index](https://www.zero.xyz/llms.txt)