csprng

/v1/api	Request randomness from Cloudflare's edge servers.
Params:
length	Number of bytes. Valid for integer between 1 and 65535. Default 32
format	Format of the returned randomness. Values: base64

Example

$ curl https://csprng.xyz/v1/api
{
        "Status": 200,
        "Data": "hp7RWuKfuUHWXvAQTUEtRits0chzZWHDjP58nVmwOZM=",
        "Time": "2018-10-14T07:03:39.250Z"
}

See for yourself!