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slack.com

Send Slack message

Post a message to a channel or DM, identified by name ('social', '#social'), channel/DM id (C…/D…), or a user (@handle or U…) for a direct message. Pass threadTs to reply inside a thread (with broadcast to also send it to the channel). Returns the new message ts, channel id and permalink. Requires login.

Input

text required

Message text (supports Slack mrkdwn).

channel required

Target: channel name/#name, channel/DM id (C…/D…), @handle or user id (U…) for a DM.

threadTs optional

Parent message ts to reply in its thread.

broadcast optional

When replying in a thread, also post to the channel. Default false.

workspaceDomain optional

Workspace host, e.g. acme.slack.com. Defaults to the active workspace.

Output

ok required
ts required
channel required
permalink optional

FAQ

Post a message to a channel or DM, identified by name ('social', '#social'), channel/DM id (C…/D…), or a user (@handle or U…) for a direct message. Pass threadTs to reply inside a thread (with broadcast to also send it to the channel). Returns the new message ts, channel id and permalink. Requires login.
Required: channel, text. Optional: threadTs, broadcast, workspaceDomain.
It returns ok, ts, channel, permalink.
Yes. It acts as you on slack.com: on your own Chrome it reuses your session, and on a Reduck-hosted browser it loads the slack.com cookies saved by the Reduck extension.
It makes changes on slack.com, like sending, posting or booking something.
Ask an AI agent connected to Reduck to run reduck/slack.com/send_message, or run it from a terminal with the Reduck CLI: npx @reduck-ai/cli@latest run --script reduck/slack.com/send_message
It is part of Reduck's official curated catalogue.

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