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Actions

Slack

Send an event-based message to a channel.

Connect and configure

Open Settings → Connections and connect Slack. Follow the connection dialog, then return to the action and select that connection.

Fill in Channel and Message. Invite the connected app to the destination channel, including private channels you want it to post in. Access to the workspace alone is not enough.

Slack Action Configuration
Path 1
Every event
Slack
Selected action
1Slack
Continue on error
A failure stops later actions on this path.
Example. Select your Slack connection, choose the destination channel, and compose the message using event fields.Changes stay in this example. Nothing is saved or sent.

Write the message

The Message supports Slack-style formatting and event templates. Copy field paths from the event and earlier action outputs.

Slack Message Configuration and Preview
Slack
Test run · Slack
Outcome
Would send
Channel
#treasury-alerts
Message
*USDC transfer* 125000 tokens
Example. Test run previews the message without posting. Inspect a real run to check the action outcome.Changes stay in this example. Nothing is saved or sent.
Message template
*{{ event.token_symbol }} transfer*
{{ event.value_decimal }} tokens
{{ event.explorer_tx_url }}

Check the result

Test run shows the rendered message without posting. Check a real run to confirm delivery. If it fails, inspect the reason and verify the connection, channel, and app membership.

To include an Agent answer, put Agent above Slack and insert {{ actions.agent_1.text }}. The dry test does not generate that answer, so it cannot fully preview this message.

Slack Configuration with Agent Output
Path 1
1 · AgentSummarize the event
2 · SlackSend the answer
Slack
Example. Place Slack after Agent and select its text output. A dry test does not generate the Agent answer.Changes stay in this example. Nothing is saved or sent.