Use F# Type Providers with the unsplash API

Unsplash.fs

module Unsplash 
open FSharp.Data
open System.IO
open System.Net.Http

type RandomPhoto =
    JsonProvider<"https://api.unsplash.com/photos/random?client_id=<YOUR ACCESS TOKEN>">

let getRandomPhoto = RandomPhoto.AsyncGetSample()

let getImageFromUrl (url: string) =
    async {
        use http = new HttpClient()
        let! str = http.GetStreamAsync(url) |> Async.AwaitTask
        let name = Path.GetTempFileName()
        use file = File.Create(name)
        str.CopyTo(file)
        return name
    }