The Open Heart protocol allows an anonymous user to send an emoji reaction to a URL using a POST request. The message should contain a single emoji sequence, with the option to ignore any additional data. A GET request to the same URL can retrieve the emoji reaction counts. Users can easily implement this protocol on their websites using a simple or the component for a better user experience. The server code examples provided include Cloudflare Worker & Cloudflare KV or Glitch and fasify. The protocol is a simpler alternative to WebMention, with the server owner having control over how to handle repeated emoji submissions or unwanted emojis.
https://openheart.fyi/