Analyze invoices and predict cash flow with Gemini, Google Sheets, Gmail, and Slack — n8n Workflow

Medium complexity⚡ Trigger11 nodes🏷️ Invoice Processingby Oka Hironobu

Overview

Analyze invoices and predict cash flow with Gmail, Google Sheets, and Gemini AI

What this workflow does

This workflow automates invoice processing and cash flow prediction by combining Google Gemini AI with form-based invoice capture, fraud detection, and financial reporting.

Submit an invoice through the web form, and the workflow automatically extracts key data using AI, checks for fraud risk, logs everything to Google Sheets, predicts cash flow impact, and notifies your team via Slack and

Nodes used

Google SheetsSlackGmailCodeBasic LLM ChainGoogle Gemini Chat Model

Workflow Preview

modelmodel
⚡
I
Invoice Upload Form
Process Invoice Data
AI Invoice Analyzer
Google Gemini Chat Model
Parse AI Response
F
Fraud Risk Check
Log to Financial Database
Cash Flow Predictor
Google Gemini Chat Model1
Send Alert
Send Financial Report
11 nodes11 edges

How it Works

  1. 1

    Trigger

    The workflow starts with a trigger trigger.

  2. 2

    Process

    Data flows through 11 nodes, connecting chainllm, code, formtrigger.

  3. 3

    Output

    The workflow completes its automation and delivers the result to the configured destination.

Node Details (11)

GO

Google Sheets

googleSheets

#1
SL

Slack

slack

#2
GM

Gmail

gmail

#3
CO

Code

code

#4
BA

Basic LLM Chain

n8n-nodes-langchain.chainLlm

#5
GO

Google Gemini Chat Model

n8n-nodes-langchain.lmChatGoogleGemini

#6

How to Import This Workflow

  1. 1Click Download JSON button on the right to save the workflow file.
  2. 2Open your n8n instance. Go to Workflows → New → Import from file.
  3. 3Select the downloaded analyze-invoices-and-predict-cash-flow-with-gemini-google-sheets-gmail-and-slack file and click Import.
  4. 4Set up credentials for each service node (API keys, OAuth, etc.).
  5. 5Click Test Workflow to verify everything works, then activate it.

Or paste directly in n8n → Import from JSON:

{ "name": "Analyze invoices and predict cash flow with Gemini, Google Sheets, Gmail, and Slack", "nodes": [...], ...}

Integrations

chainllmcodeformtriggergmailgooglesheetsiflmchatgooglegeminislack

Get This Workflow

Download and import in one click

Download JSONView on n8n.io
Nodes11
Complexitymedium
Triggertrigger
CategoryInvoice Processing

Created by

Oka Hironobu

Oka Hironobu

@okp29

Tags

chainllmcodeformtriggergmailgooglesheetsiflmchatgooglegeminislack
⚡

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🔗 Webhook·12 nodes