x-callback-url
as the host and expect the same results.
quick-draft://x-callback-url/prepend?text={TEXT}
{TEXT}
is the content to prepend.
quick-draft://x-callback-url/append?text={TEXT}
{TEXT}
is the content to append.
quick-draft://x-callback-url/get?returnParam={RETURNPARAM}&x-success={SUCCESSURL}
{RETURNPARAM}
is the param to the receiving app with the contents of your scratchpad and {SUCCESSURL}
is the URL of the receiving app.