Hi - I answer from the OpenSmartRoute documentation: routing, the API, plans and quotas, self-hosting. Ask away, or open a support ticket if you need a person.
Grounded in the docs - follow a source before acting on it.
Clevelandart - Tool - OpenSmartRoute
Toolv0.1.0
Clevelandart
Cleveland Museum of Art Open Access API (~63k artworks, many CC0)