Give employees quick IT answers inside Slack without waiting for a human. The flow captures direct messages, sends a fast acknowledgment, searches your knowledge base, and returns a clear reply. It fits helpdesk teams that want faster triage and fewer simple tickets.

Incoming DMs hit a webhook that also handles Slack’s challenge checks. A bot filter ignores bot posts. The system posts a short On it message, then an AI Agent uses an OpenAI model and a memory window tied to the Slack channel to keep the last 10 messages in context. A tool call passes 1 to 3 keywords to a second n8n workflow that queries Confluence, and the AI uses those results to draft the final answer. The flow deletes the initial receipt, formats links for Slack, and sends the final message back to the user.

Set up requires a Slack app with Events API enabled, an OpenAI API key, and a separate n8n workflow that queries Confluence. Teams can expect faster first responses, fewer repeated questions, and cleaner DMs. Use it for IT helpdesk DMs, onboarding FAQs, and policy lookups where people prefer quick answers in Slack.

• Slack webhook receives direct messages and responds to Slack challenge checks
• Bot filter skips messages from bots to prevent loops
• Instant acknowledgment via Slack to show the request is being handled
• OpenAI Chat Model gpt 4o powers replies through an AI Agent
• Window Buffer Memory keeps the last 10 messages per Slack channel for context
• Tool call sends 1 to 3 keywords to a secondary workflow that searches Confluence
• Final message converts Markdown links and bold to Slack friendly formatting
• Cleanup step deletes the initial receipt before posting the final answer
• No operation branch safely ends ignored bot messages

• Reduce first response time from 10 minutes to under 1 minute
• Automate up to 70% of common IT questions using your knowledge base
• Keep DMs tidy by removing the temporary acknowledgment message
• Handle 5 times more concurrent questions with AI and memory
• Connect Slack, OpenAI and Confluence for unified answers

1. Import the template into n8n: Create a new workflow in n8n > Click the three dots menu > Select 'Import from File' > Choose the downloaded JSON file.
2. You'll need accounts with Slack, OpenAI and Confluence. See the Tools Required section above for links to create accounts with these services.
3. Create a Slack app in your Slack workspace. Enable the Events API and subscribe to message events for direct messages. Set the Request URL to the public URL of the Receive DMs webhook node from n8n.
4. In the n8n credentials manager, open any Slack node and click Create new credential. Follow the on screen steps to connect your Slack app using OAuth. Grant chat:write and the relevant message history scopes, then test the connection.
5. Open the Send Initial Message, Delete Initial Message, and Send Message nodes. Select your Slack credential and set the channel to use the expression that reads the channel ID from Receive DMs.
6. Create an OpenAI API key in your OpenAI account. In n8n, open the OpenAI Chat Model node, choose Create new credential, paste the API key, and save. Ensure the model is set to gpt 4o.
7. Build the knowledge tool workflow: create a second n8n workflow that uses an HTTP Request node to call your Confluence search API. Use a Confluence API token or basic auth. Test that it returns useful results.
8. Copy the second workflow’s ID and paste it into the Call Confluence Workflow Tool node so the AI Agent can use it. Confirm the tool expects 1 to 3 keywords as input.
9. Check the Window Buffer Memory node. It should use the Slack channel ID as the session key and store about 10 messages. Adjust the window length if you need longer context.
10. Verify Slack challenge handling: open your Slack app’s Events page and confirm the URL is verified. If not, ensure the Verify Webhook node returns the challenge field in JSON.
11. Send a test DM to your Slack app. You should see the On it message, then the final answer. The acknowledgment should be deleted automatically before the final message arrives.
12. Troubleshooting: if messages do not post, reauthorize the Slack credential. If links show as Markdown, confirm the expression in Send Message is converting links and bold. If loops occur, ensure the bot filter condition is correct.