Not able to connect to Slack with N8n using Socket mode as Webhook flow is not allowed in my company

[abhishek]

Describe the problem/error/question

I am trying to connect Slack with n8n using Socket Mode since Webhook flow is not allowed in my company. However, I am facing difficulties in setting it up correctly.

What is the error message (if any)?

There is no specific error message, but Slack events are not being received in n8n.

• n8n version: 1.80.4
• Database: Not using SQLite
• n8n EXECUTIONS_PROCESS setting: own
• Running n8n via: Rancher Desktop
• Operating system: Mac Pro

[n8n]

It looks like your topic is missing some important information. Could you provide the following if applicable.

• n8n version:
• Database (default: SQLite):
• n8n EXECUTIONS_PROCESS setting (default: own, main):
• Running n8n via (Docker, npm, n8n cloud, desktop app):
• Operating system:

[abhishek]

• n8n version: 1.80.4
• Database: Not using SQLite
• n8n EXECUTIONS_PROCESS setting: own
• Running n8n via: Rancher Desktop
• Operating system: Mac Pro

[Yo_its_prakash]

Configure Slack Socket Mode by setting up a Slack app with necessary scopes, generate App-Level and Bot tokens, and use them in n8n’s Slack Trigger node. Ensure your app is configured to receive events in Slack.

Do you need a proper step by step solution for this?

[Yo_its_prakash]

To connect n8n to Slack using Socket Mode, follow these steps:

1. Slack App Configuration:

• Create a Slack app in your workspace if you haven’t already.
• Enable Socket Mode in your app settings.
• Generate a Bot Token (starts with xoxb-) and an App-Level Token (starts with xapp-).
• Subscribe to necessary bot events (e.g., message.channels, message.im).

2. n8n Slack Trigger Node Setup:

• Add a “Slack Trigger” node to your workflow.
• In the node settings, select “Socket” as the Authentication method.
• Enter your Bot Token and App-Level Token.
• Choose the events you want to listen for.

3. Environment Variables:

• Set these environment variables in your n8n configuration:

N8N_ENCRYPTION_KEY=your_encryption_key
SLACK_SOCKET_TOKEN=your_app_level_token

4. Custom Function Node (Optional):

• If the Slack Trigger node doesn’t support Socket Mode directly, you may need to implement a custom solution:

const { WebClient } = require('@slack/web-api');
const { SocketModeClient } = require('@slack/socket-mode');

const appToken = process.env.SLACK_SOCKET_TOKEN;
const socketModeClient = new SocketModeClient({ appToken });

socketModeClient.on('message', async ({ event, body, ack }) => {
  await ack();
  // Process the message event
  // You can emit this data to other nodes in your workflow
});

socketModeClient.start().catch(console.error);

5. Testing:

• Activate your workflow.
• Send a message in a Slack channel where your bot is present.
• Check n8n execution logs to verify if events are being received.

6. Troubleshooting:

• Ensure your Slack app has the necessary scopes (e.g., chat:write, channels:history).
• Verify that the bot is invited to the channels you’re testing with.
• Check n8n logs for any connection errors or warnings.

7. Security Considerations:

• Store sensitive tokens securely using n8n’s credentials manager.
• Implement proper error handling and logging in your workflow.