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ExpertPremiumAI AgentsWebhook trigger22 nodes

Automate an AI agent task with Google Sheets, Gmail and Slack

Fires the moment a webhook arrives across Google Sheets, Gmail and Slack, looks the answer up in a vector store, then hands the decision to an AI agent. Built for multi-tool agent, around a "Answer from Knowledge Base" step, in 22 documented nodes.

Automate an AI agent task with Gmail for your team. An original, ready-to-import n8n workflow built around the 'AI Agent' pattern for AI & automation. It fires on a webhook and orchestrates 22 nodes across Google Sheets, Gmail, Slack. 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. Your team sees the right data at the right time.

Key benefits

  • Keeps Google Sheets and Gmail in step for multi-tool agent, without anyone re-typing a row
  • Safe to re-run: records already in Google Sheets or Gmail are skipped, across all 22 nodes of this multi-tool-agent build
  • A failed Google Sheets or Gmail call is retried rather than dropped, at any of the 22 nodes in this multi-tool-agent build
  • Bad input stops the run for multi-tool agent instead of landing in Google Sheets
  • The multi-tool-agent AI step is isolated from Google Sheets, so models swap without touching the other 22 nodes

Use cases

  • Teams keeping Google Sheets and Gmail aligned by hand for multi-tool agent
  • Answering multi-tool-agent questions from your own indexed documents, then replying in Google Sheets
  • Multi-tool agent work that needs a judgement call per item before it reaches Google Sheets
  • Pushing multi-tool-agent events into Google Sheets and Gmail the moment they land, not on the next poll

Integrations

Google SheetsGmailSlackPostgreSQLOpenRouter

Workflow preview (22 nodes)

The template's actual node layout and connections. Node parameters and credential slots unlock with the download.

Receive Inbound WebhookWebhookRequired Fields Present?IfAbort — Malformed InputStop And ErrorAnswer from Knowledge B…AgentOpenRouter Chat ModelLm Chat Open RouterKnowledge Base RetrieverVector Store PGVectorQuery EmbeddingsEmbeddings Open AiRerank Retrieved ChunksReranker CohereGrounded Answer Found?IfReturn Answer (HTTP 200)Respond To WebhookLog Knowledge GapGoogle SheetsFlag Gap to KB OwnersGmailFingerprint for Idempot…CodeDrop Already-Processed …Remove DuplicatesSerialize Run Output (C…Convert To FileArchive Row SnapshotGoogle SheetsSummarize Run StatsSetAppend Audit Row (Googl…Google SheetsSend Summary to GmailGmailCapture Failure ContextSetEscalate Failure to Sla…SlackPark in Dead-Letter Que…Google Sheets

What's inside (22 nodes)

A look at the node types this workflow uses. No purchase required — full parameters and credentials are yours after you buy.

AgentCodeConvert To FileEmbeddings Open AiGmailGoogle SheetsIfLm Chat Open RouterRemove DuplicatesReranker CohereRespond To WebhookSetSlackStop And ErrorVector Store PGVectorWebhook

Agent tools included (1)

An AI Agent is only as capable as the tools wired into it. These are read from the template's own graph — every one is a real node in the file you download.

  • Knowledge Base Retriever · Vector Store PGVector

This agent runs without conversation memory - each run starts from the incoming request.

From download to running in 3 steps

  1. 1
    Import. In n8n, open Workflows → menu → “Import from File” and pick the downloaded JSON.
  2. 2
    Connect. Add your own credentials on the app nodes - n8n highlights exactly which ones need them.
  3. 3
    Activate. Run it once to test, then toggle Active. The automation is live.

What you'll learn

Production level

Production-grade: idempotency, dead-letter handling, and reconciliation included.

  • Moving data between Google Sheets, Gmail and Slack in a single run
  • Failing loudly on a bad run instead of letting it pass silently
  • Adding retries and an explicit error path to external calls

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, Gmail, Slack, PostgreSQL). 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.

Original n8n workflow template created and owned by WorkflowCrate. After purchase you receive the ready-to-import JSON file and a license to use and adapt it in your own projects.