n8n RAG Assistant: Answer from your docs (RAG) When someone asks a question in Slack and Save It to Notion
This n8n + AI recipe watches for when someone asks a question in Slack and retrieves the right passage from your knowledge base and answers with sources. The result: an AI assistant that answers from your own docs, completely hands-off.
- 1
Trigger when someone asks a question in Slack
A
Slack Triggerstarts the workflow the moment someone asks a question in Slack. - 2
Retrieve the right context
A
Vector Storenode (Pinecone) fetches the most relevant passages from your indexed content so the answer is grounded in your own material. - 3
Hand it to the AI agent
An
AI Agentnode running OpenAI retrieves the right passage from your knowledge base and answers with sources. The prompt is pre-written and scoped to this one job so results stay consistent. - 4
Deliver the answer
The result is saved to Notion — instantly, no clicks needed.
- 5
Add a safety net (optional)
Insert an
IF/human-approval step before anything is published or emailed, so you stay in control until you trust the output.
Frequently asked questions
Can I trust the AI to get the answer right?
The prompt is tightly scoped to one job and you can add a human-approval step in n8n before anything is sent or published. Start with review-mode for a week, and once you trust the output, switch it to fully automatic.
Does this need n8n Cloud or can I self-host?
Either works. The workflow is a standard n8n export, so you can run it on n8n Cloud or on your own self-hosted instance — you only connect your own app credentials.
How do I import the workflow into n8n?
Download the JSON, then in n8n open a new workflow, choose ⋯ → Import from file, and select it. Every trigger, node and connection appears on the canvas; you just add your credentials and activate it.
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