Answer questions from a knowledge base: Google Sheets + vector search
Fires the moment a webhook arrives across Google Sheets and Slack, looks the answer up in a vector store, then drops anything it has already handled. Built for document search, around a "List Changed Docs (API)" step, in 21 documented nodes.
Answer questions from a knowledge base with HTTP / REST API on autopilot for Document Search . An original, ready-to-import n8n workflow built around the 'RAG Pipeline' pattern for AI & automation. It fires on a webhook and orchestrates 21 nodes across Google Sheets, Slack, 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 Google Sheets and Slack in step for document search, without anyone re-typing a row
- ✓Safe to re-run: records already in Google Sheets or Slack are skipped, across all 21 nodes of this document-search build
- ✓A failed Google Sheets or Slack call is retried rather than dropped, at any of the 21 nodes in this document-search build
- ✓Every document-search run leaves an audit row behind, alongside Google Sheets
- ✓Document-search answers come from your indexed content, not model recall, before reaching Google Sheets
Use cases
- →Teams keeping Google Sheets and Slack aligned by hand for document search
- →Answering document-search questions from your own indexed documents, then replying in Google Sheets
- →Pushing document-search events into Google Sheets and Slack the moment they land, not on the next poll
- →Document search work where "List Changed Docs (API)" is still a manual step before Google Sheets
Integrations
Workflow preview (21 nodes)
The template's actual node layout and connections. Node parameters and credential slots unlock with the download.
What's inside (21 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
Production levelProduction-grade: idempotency, dead-letter handling, and reconciliation included.
- •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 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 (Google Sheets, Slack, HTTP / REST API). 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.
Related templates
Retrieve questions from a knowledge base: Slack for document search
Document search on n8n: runs when a webhook arrives across Slack, Google Sheets and Notion, starting at "Stamp & Shape Document". 31 documented nodes.
Digest meeting notes: Notion & Google Sheets
Document search on n8n: runs when a webhook arrives across Notion, Google Sheets, Microsoft Teams and Slack, starting at "Collect Raw Text". 22 documented nodes.
Retrieve indexed documents for document search
Document search on n8n: runs when a webhook arrives across Google Sheets and Slack, starting at "Normalize Document Payload". Looks the answer up in a vector store. 21 documented nodes.
Summarize documents with Google Sheets and Discord
Document search on n8n: runs when a webhook arrives across Google Sheets, Discord and Slack, starting at "Keep Valid Documents". 22 documented nodes.