Post a Slack channel message
Olyvr can post a message to a Slack channel for you, or reply in a thread. If you’re signed in to more than one Slack workspace, you say which one, and Olyvr keeps the post there.
What you need
Section titled “What you need”- A Slack workspace connected with Sign in with Slack. The built-in Slack plugin uses the same sign-in, so there is no Slack app to register. See Plugins and MCP.
- Permission to post in the channel.
Being signed in to Slack in a browser is not enough. Olyvr needs its own Slack sign-in.
Ask Olyvr
Section titled “Ask Olyvr”Post “Launch brief is ready ✅” in #launch in the Acme workspace.
What Olyvr does
Section titled “What Olyvr does”- Finds the workspace and the channel. If two workspaces have a channel with the same name, it uses the one in the workspace you named, or asks.
- Shows the post for approval: the workspace, the channel and the exact text.
- Posts once you approve. Posting always asks first unless you’ve chosen Full access.
- Reports the workspace, channel and a link to the message when Slack provides one.
Check the result
Section titled “Check the result”- Follow the link, or open the channel in Slack. There should be one new message with the text you approved, posted as you.
- Check that the channel with the same name in your other workspace has nothing new.
If something goes wrong
Section titled “If something goes wrong”- No link in the result: the message can still have been posted. Check the channel before asking again, so you don’t post it twice.
- Private or archived channel: Olyvr can only post where your Slack account can post.
- Workspace not listed: sign in with Slack again for that workspace.