Slack

Connect Slack so your agents can read channel history, respond to @mentions, and reply in-thread.

Audience: IT (the enabler) and builders

What it can do

• Read. Channel history.
• Triggers. A message that @mentions the workspace Slack app and asks for a Workflow's work starts a run. In a channel with triggers, the request goes to the matching trigger. Elsewhere, the app finds the Workflow that was asked for. Work starts only when the sender has a linked Slack account with permission to operate the Project; see Triggers.
• Answers. Any other @mention gets an answer in the thread. The app answers as the sender: it sees the Projects they can see and works with their permissions. It reads the earlier messages in the thread, so a follow-up such as "try again" has context.
• Reply. In-thread only.

This integration does not support Write today.

Triggers and Workflow posts use the workspace Slack app, not this integration. An administrator sets up that app under Configuration > Slack app. A Workflow trigger lists the channels the app is in, so builders need neither this integration nor a personal Slack account to pick one. This integration copies messages from the channels you pick into the Project so agents can read them.

Who connects this

Admin-enabled OAuth. Your Slack workspace admin installs the platform Slack application once. After that, a team admin or workspace admin connects the integration for a team or the whole workspace. Builders add it to their Projects without signing in.

Approve decisions from Slack

A Workflow can send a decision to a Slack channel when it pauses for a person. Add slack_channel with the channel's ID to the notify of a human.request step. When the run pauses there, the Slack app posts the question, the saved form values, and the answer buttons to that channel.

A reviewer answers with a button, or selects Open decision to review it in the app. Notes, edits, and email review happen through Open decision. The answer records who decided and resumes the same Workflow. When the decision is answered or cancelled, the message updates and its buttons disappear. A later click cannot replace the answer.

To answer in Slack, a reviewer needs permission to work the Project's Work items and a linked Slack account. To link the account, send the Slack app a direct message, open the link it replies with, and sign in if asked.

If a reviewer who has not linked their account selects an answer button, the Slack app sends them a private Connect your Sema4 account link. After they link the account, they select the button again.

If the message cannot be delivered, the decision in the app shows the failure. Check the app connection in Configuration and that the app is still in the channel, then select Retry Slack notification. The Workflow does not rerun. If updating the message fails after the answer, the answer stays recorded, and Retry Slack message update tries again.

Slack decisions need a one-time setup.