Oka Hironobu This workflow corresponds to n8n.io template #13420 — we link there as the canonical source.
This workflow follows the Chainllm → Form Trigger recipe pattern — see all workflows that pair these two integrations.
The workflow JSON
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{
"meta": {
"templateCredsSetupCompleted": true
},
"nodes": [
{
"id": "784bfe7d-15ec-426d-9d52-7f4c669f8a73",
"name": "Workflow Overview",
"type": "n8n-nodes-base.stickyNote",
"position": [
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"parameters": {
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},
{
"id": "54401a2c-8daf-42a3-a904-0b8d07182ad4",
"name": "Step 1 - Invoice Capture",
"type": "n8n-nodes-base.stickyNote",
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"parameters": {
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{
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{
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"name": "Step 3 - Processing",
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{
"id": "276c5a6c-44cb-4eb3-9c4f-10fa80821271",
"name": "Step 4 - Reporting",
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"parameters": {
"content": ""
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{
"id": "6a92a463-2d46-48f1-93e1-77ad3771a4b6",
"name": "Invoice Upload Form",
"type": "n8n-nodes-base.formTrigger",
"position": [
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"parameters": {},
"typeVersion": 2.1
},
{
"id": "f944c845-0432-4421-8f2a-789d1b602c7b",
"name": "Process Invoice Data",
"type": "n8n-nodes-base.code",
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"parameters": {},
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{
"id": "ec79ec9c-347a-45ed-9d02-48e563d67e61",
"name": "AI Invoice Analyzer",
"type": "@n8n/n8n-nodes-langchain.chainLlm",
"position": [
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"parameters": {},
"typeVersion": 1.4
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{
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"name": "Google Gemini Chat Model",
"type": "@n8n/n8n-nodes-langchain.lmChatGoogleGemini",
"position": [
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"parameters": {},
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{
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"parameters": {},
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{
"id": "4b773e72-0954-44bc-b272-01da8206b578",
"name": "Fraud Risk Check",
"type": "n8n-nodes-base.if",
"position": [
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"parameters": {},
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},
{
"id": "09ab2b1f-0bdc-4c8b-861f-0d048b94fe00",
"name": "Log to Financial Database",
"type": "n8n-nodes-base.googleSheets",
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"parameters": {},
"typeVersion": 4.5
},
{
"id": "1765f748-fd06-4ad4-ba75-0103d1258bfe",
"name": "Cash Flow Predictor",
"type": "@n8n/n8n-nodes-langchain.chainLlm",
"position": [
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"parameters": {},
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{
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"name": "Google Gemini Chat Model1",
"type": "@n8n/n8n-nodes-langchain.lmChatGoogleGemini",
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"parameters": {},
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{
"id": "3ced5895-f364-40be-a90b-7cad3cf258c9",
"name": "Send Alert",
"type": "n8n-nodes-base.slack",
"position": [
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"parameters": {},
"typeVersion": 2.2
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{
"id": "914728e8-ebf9-4a35-9a9a-b5c53e3bb3f6",
"name": "Send Financial Report",
"type": "n8n-nodes-base.gmail",
"position": [
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"parameters": {},
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],
"connections": {
"Fraud Risk Check": {
"main": [
[
{
"node": "Send Alert",
"type": "main",
"index": 0
},
{
"node": "Log to Financial Database",
"type": "main",
"index": 0
}
],
[
{
"node": "Log to Financial Database",
"type": "main",
"index": 0
}
]
]
},
"Parse AI Response": {
"main": [
[
{
"node": "Fraud Risk Check",
"type": "main",
"index": 0
}
]
]
},
"AI Invoice Analyzer": {
"main": [
[
{
"node": "Parse AI Response",
"type": "main",
"index": 0
}
]
]
},
"Cash Flow Predictor": {
"main": [
[
{
"node": "Send Financial Report",
"type": "main",
"index": 0
}
]
]
},
"Invoice Upload Form": {
"main": [
[
{
"node": "Process Invoice Data",
"type": "main",
"index": 0
}
]
]
},
"Process Invoice Data": {
"main": [
[
{
"node": "AI Invoice Analyzer",
"type": "main",
"index": 0
}
]
]
},
"Google Gemini Chat Model": {
"ai_languageModel": [
[
{
"node": "AI Invoice Analyzer",
"type": "ai_languageModel",
"index": 0
}
]
]
},
"Google Gemini Chat Model1": {
"ai_languageModel": [
[
{
"node": "Cash Flow Predictor",
"type": "ai_languageModel",
"index": 0
}
]
]
},
"Log to Financial Database": {
"main": [
[
{
"node": "Cash Flow Predictor",
"type": "main",
"index": 0
}
]
]
}
}
}
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About this workflow
This workflow automates invoice processing and cash flow prediction by combining Google Gemini AI with form-based invoice capture, fraud detection, and financial reporting.
Source: https://n8n.io/workflows/13420/ — original creator credit. Request a take-down →
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