Basic API response for teaching demo

How about the Random User Generator https://randomuser.me?

library(httr)
res <- GET("https://randomuser.me/api/?format=csv&inc=gender,name,nat&noinfo")
content(res)
#> Parsed with column specification:
#> cols(
#>   gender = col_character(),
#>   name.title = col_character(),
#>   name.first = col_character(),
#>   name.last = col_character(),
#>   nat = col_character()
#> )
#> # A tibble: 1 x 5
#>   gender name.title name.first name.last   nat
#>    <chr>      <chr>      <chr>     <chr> <chr>
#> 1   male         mr      marco     marin    ES
#> Created on Tue Oct 10 16:06:59 2017 using the reprex package
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