The Open Heart protocol lets an anonymous user sends an emoji reaction to a URL.

Adapted from https://openheart.fyi/, to run on Val Town.

https://openheart.val.run/

Test with example.com as <domain>.

GET /<domain>/<uid> to look up reactions for <uid> under <domain>
GET /<domain> to look up reactions for everything under <domain>

POST /<domain>/<uid> to send an emoji

<uid> must not contain a forward slash.
<domain> owner has the right to remove data under its domain scope.

You can test sending emojis with POST.tsx, and check emojis received with GET.tsx.