Sending JSON to Slack in a HTTP POST request

Question

I\'m trying to send a message using Slack\'s chat.postMessage API call. I have no problems encoding my test messages within HTTP GET, but I\'m trying to achieve the same res

Answer 1

This may not qualify for the complete answer, but if the purpose is to send a message attachment, you can send a urlencoded JSON structure as the value of the attachments parameter, like so (split into multiple lines for clarity):

https://slack.com/api/chat.postMessage?
token=YOUR-TOKE-N000&
channel=%23alerts&
text=Hi&
attachments=%5B%7B%22color%22%3A%22good%22%2C%22fallback%22%3A%22plain+text%22%2C%22text%22%3A%22colored+text%22%7D%5D

The value of attachments is URL-encoded [{"color":"good","fallback":"plain text","text":"colored text"}]. You should be able to use all attachment attributes described here.