Query questions from a knowledge base: Slack + sub-workflow
Fires the moment a webhook arrives across Slack, Google Sheets and Notion, looks the answer up in a vector store, then drops anything it has already handled. Built for q&a, around a "List Changed Docs (API)" step, in 33 documented nodes.
Query questions from a knowledge base with HTTP / REST API and log the results. An original, ready-to-import n8n workflow built around the 'RAG Pipeline' pattern for AI & automation. It fires on a webhook and orchestrates 33 nodes across Slack, Google Sheets, HTTP / REST API. It uses n8n's LangChain AI nodes (Agent/Chain + chat model). Retry-on-fail is enabled on external calls. Import the JSON, add your credentials, and adapt the parameters. Nothing slips through the cracks.
Key benefits
- ✓Keeps Slack and Google Sheets in step for q&a, without anyone re-typing a row
- ✓Safe to re-run: records already in Slack or Google Sheets are skipped, across all 33 nodes of this q&a build
- ✓A failed Slack or Google Sheets call is retried rather than dropped, at any of the 33 nodes in this q&a build
- ✓Every q&a run leaves an audit row behind, alongside Slack
- ✓Fans the same result out to Notion in the same run, for q&a
Use cases
- →Teams keeping Slack and Google Sheets aligned by hand for q&a
- →Answering q&a questions from your own indexed documents, then replying in Slack
- →Pushing q&a events into Slack and Google Sheets the moment they land, not on the next poll
- →Q&a work where "List Changed Docs (API)" is still a manual step before Slack
Integrations
Workflow preview (33 nodes)
The template's actual node layout and connections. Node parameters and credential slots unlock with the download.
What's inside (33 nodes)
A look at the node types this workflow uses. No purchase required — full parameters and credentials are yours after you buy.
From download to running in 3 steps
- 1Import. In n8n, open Workflows → menu → “Import from File” and pick the downloaded JSON.
- 2Connect. Add your own credentials on the app nodes - n8n highlights exactly which ones need them.
- 3Activate. Run it once to test, then toggle Active. The automation is live.
What you'll learn
Architect levelThe deepest tier - sub-workflow delegation, state snapshots, and full observability.
- •Chunking documents with overlap and embedding them into a vector store
- •Embedding content and querying it back out of a vector store
- •Moving data between Google Sheets, Notion and Slack in a single run
Every node carries its own documentation on the canvas, plus notes explaining why the architecture was built this way, a credential setup guide, troubleshooting, and three practice exercises. Sample data comes pinned to the trigger, so you can hit Execute and watch data flow before connecting a single account.
Common questions
What exactly do I get?
The complete, ready-to-import n8n workflow as a JSON file, delivered instantly after payment. Import it into your own n8n (cloud or self-hosted), add your credentials, and it runs.
How do I import it into n8n?
In n8n, open Workflows, click the three-dot menu, choose “Import from File”, and select the downloaded JSON. Then connect your own app credentials on the highlighted nodes.
Do I need anything else for it to work?
You need your own n8n instance and accounts/credentials for the apps this workflow connects to (Slack, Google Sheets, HTTP / REST API, Notion). No coding is required.
What if it doesn't work for me?
If the file is faulty, won't import, or isn't as described, contact us within 7 days and we'll fix it or refund you - see our refund policy.
Can I modify or resell it?
You can freely adapt and use it in your own or your clients' projects. Reselling or redistributing the template file itself is not permitted.
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