Very similar to the HTML slippy map you get from https://www.mapbox.com/api-documentation/#retrieve-an-html-slippy-map but defaults to PNG tiles rather than JPEG tiles.
You can use it live via:
https://alantgeo.github.io/mapbox-raster-tileset-viewer/#tileset=USERNAME.TILESET&access_token=ACCESS_TOKEN&location=ZOOM/LAT/LON