HERE

HERE GNSS Data API

Assisted GNSS (A-GNSS) data and predicted GNSS navigation models

Documentation GitHub OpenAPI

Operations 2

Each operation below carries the questions people ask an LLM about it and the instructions they give an agent to run it. Generated by API Evangelist overlay

GET /assistance Get real-time A-GNSS assistance data · Real-time assistance data #

Ask an LLM

“How can a device get a faster satellite fix using real-time assistance data?”

“Which satellite systems does real-time A-GNSS data cover?”

Tell an agent

Get real-time assistance data for {gnss}.

Fetch live A-GNSS data for {gnss} as LPP messages encoded {encoding}.

GET /prediction Get predicted GNSS navigation models · Predicted GNSS navigation models #

Ask an LLM

“Can I download predicted satellite orbits for the coming days instead of live data?”

“Which satellite systems have predicted navigation models available?”

Tell an agent

Get predicted GPS navigation models starting from {gps}.

Fetch predicted Galileo models from {gal} and BeiDou models from {bds}.

Documentation

https://docs.here.com/identity-and-access-management/docs

https://docs.here.com/identity-and-access-management/reference

https://docs.here.com/data-api/docs

https://docs.here.com/data-api/reference

https://docs.here.com/usage/docs

https://docs.here.com/usage/reference

https://docs.here.com/destination-weather/docs

https://docs.here.com/destination-weather/reference

https://docs.here.com/ev-products/docs

https://docs.here.com/ev-products/reference

https://docs.here.com/fuel-prices/docs

https://docs.here.com/fuel-prices/reference

https://docs.here.com/geocoding-and-search/docs

https://docs.here.com/geocoding-and-search/reference

https://docs.here.com/routing/docs

https://docs.here.com/routing/reference

https://docs.here.com/positioning/docs

https://docs.here.com/positioning/reference

https://docs.here.com/indoor-map/docs

https://docs.here.com/indoor-map/reference

https://docs.here.com/transit/docs

https://docs.here.com/transit/reference

https://docs.here.com/map-attributes/docs

https://docs.here.com/map-attributes/reference

https://docs.here.com/map-rendering/docs

https://docs.here.com/map-rendering/reference

https://docs.here.com/workspace/docs

https://docs.here.com/workspace/reference

https://docs.here.com/tour-planning/docs

https://docs.here.com/tour-planning/reference

https://docs.here.com/tracking/docs

https://docs.here.com/tracking/reference

https://docs.here.com/traffic-api/docs

https://docs.here.com/traffic-api/reference

https://docs.here.com/wego-pro/docs

https://docs.here.com/wego-pro/reference

Specifications

https://artifacts.apis.io/here/openapi/here-gnss-data-api-openapi.yml

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OpenAPI Specification

openapi: 3.2.0
info:
  title: HERE API v2 GNSS Data API
  version: 2.2.1
  description: 'GNSS Data API v2 is a service for accessing GNSS data.

    It provides Assisted GNSS (A-GNSS) data and navigation model predictions

    for GPS, GLONASS, Galileo, BeiDou and QZSS satellite systems

    to improve the performance of GNSS receivers.


    This API returns responses in the LPP ASN.1 format, encoded using Encoding

    Rules as specified by the

    3GPP and ETSI standards.'
  contact: {}
  termsOfService: https://legal.here.com/en-gb/terms/here-platform
  license:
    name: HERE Documentation License
    url: https://legal.here.com/en-gb/terms/documentation-license
    x-copyright: Copyright (C) 2026 HERE Europe B.V.
servers:
- url: https://gnss.hereapi.com/v2
  description: Production Server
security:
- ApiKey: []
- Bearer: []
tags:


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# Full source: https://artifacts.apis.io/here/openapi/here-gnss-data-api-openapi.yml