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Attribution and licensing

WMS-VT combines software, styles, fonts, sprites, and geographic data that can each have separate licence and attribution requirements.

Map data and styles

The party selecting the style and source provider is responsible for confirming that server-side rendering, caching, print use, and redistribution of the output are permitted.

An attribution=false request option does not waive attribution required by OpenStreetMap, MapTiler, or another source. It only influences service-added attribution when the WMS-VT key configuration permits that behavior.

WMS-VT source

The TypeScript renderer's maplibre/LICENCE.md currently states that the code is all rights reserved and asks prospective users to make contact. Do not describe the WMS-VT product itself as open source until the repository has an explicit licence that says so.

WMS-VT does integrate with open-source geospatial components. Those dependencies retain their own licences and notices.

Credentials

  • Keep WMS-VT and provider keys out of public repositories and generated website files.
  • Use server-side environment variables or a secrets manager.
  • Rotate any key accidentally included in a URL, screenshot, log, or browser bundle.
  • Prefer stored style aliases when a literal provider URL should not travel with every request.
  • Share private reproduction details through an agreed secure channel.

Before publication

For each customer-facing output, record the style owner, source provider, attribution text, licence link, and whether the image may be redistributed. This is operational guidance, not legal advice; consult the relevant rights holder or legal adviser for uncertain terms.