Slack Node

Send messages, manage channels, post reactions, upload files, and manage Slack users from your workflows. Use it to alert your team on new orders, payment failures, or errors.

Prerequisites

A Slack workspace where you have permission to add apps
A Slack Bot Token (starts with xoxb-) or an Incoming Webhook URL
For Bot Token: invite the bot to the channel with /invite @yourbot

Credentials

Field	Description	Where to find it
Bot Token	OAuth bot token for posting messages and managing channels	api.slack.com → Your App → OAuth & Permissions → Bot User OAuth Token
Webhook URL	Alternative to Bot Token — simpler but send-only	api.slack.com → Your App → Incoming Webhooks → Add New Webhook

Operations

Send Message

Post a message to a Slack channel or user. Supports plain text and Block Kit blocks for rich formatting.

Name	Type	Required	Default	Description
`channel`	`string`	Yes	—	Channel name (e.g. #orders) or user ID. Supports {{variables}}.
`text`	`string`	Yes	—	Message text. Supports {{variables}} and Slack markdown.
`blocks`	`JSON`	No	—	Block Kit JSON for rich formatting (buttons, sections, images)

jsonOutput

{
  "slack": {
    "ts": "1712051400.123456",
    "channel": "C07ABCDEF12",
    "message": {
      "text": "New order received",
      "ts": "1712051400.123456"
    }
  }
}

textExample — order alert

Razorpay Trigger (payment.captured)
→ Slack — Send Message
    channel: #orders
    text:    "💸 New payment from {{razorpayTrigger.payload.payment.entity.email}}
              Amount: ₹{{razorpayTrigger.payload.payment.entity.amount}} paise
              Payment ID: {{razorpayTrigger.payload.payment.entity.id}}"

Other Operations

The Slack node supports 25 operations across messages, channels, users, reactions, and files:

Category	Operations
Messages	Send Message · Update Message · Delete Message · Get Message · Get Thread
Channels	Create Channel · Archive Channel · Invite to Channel · Get Channel Info · List Channels
Users	Get User · Get User by Email · List Users
Reactions	Add Reaction · Remove Reaction · Get Reactions
Files	Upload File · Get File · List Files · Delete File

Complete Workflow Examples

Workflow Error Alerting

Use case: When any node in a workflow fails, send an alert to Slack with the error details.

textWorkflow

Error Trigger
→ Slack — Send Message
    channel: #alerts
    text:    "🚨 Workflow error!
              Node: {{errorTrigger.failedNodeName}} ({{errorTrigger.failedNodeType}})
              Error: {{errorTrigger.message}}
              Workflow: {{errorTrigger.workflowId}}
              Time: {{errorTrigger.failedAt}}"

Daily Payment Summary

Use case: Send a daily Slack summary of payments received.