I've been using Slack actions API and can't figure out how to use response_url to send a reply in the original message's thread.
The option with chat.postMessage doesn't really work as it requires manually adding the bot to channel.
I've been using Slack actions API and can't figure out how to use response_url to send a reply in the original message's thread.
The option with chat.postMessage doesn't really work as it requires manually adding the bot to channel.
So the answer I received from the support is:
If you want to respond in the thread, you need to set the response_type to in_channel and the thread_ts value to be the ts value sent with the interaction payload.
More information about responding to actions in thread