Elvis Sarvia This workflow corresponds to n8n.io template #13849 — we link there as the canonical source.
This workflow follows the Agent → Form Trigger recipe pattern — see all workflows that pair these two integrations.
The workflow JSON
Copy or download the full n8n JSON below. Paste it into a new n8n workflow, add your credentials, activate. Full import guide →
{
"nodes": [
{
"id": "d6df5e4d-1ea2-41d4-b13b-08a0c062389a",
"name": "On form submission1",
"type": "n8n-nodes-base.formTrigger",
"position": [
-1472,
1296
],
"parameters": {
"options": {},
"formTitle": "Content Approval Request",
"formFields": {
"values": [
{
"fieldType": "textarea",
"fieldLabel": "Content Body"
},
{
"fieldType": "dropdown",
"fieldLabel": "Approval Channel",
"fieldOptions": {
"values": [
{
"option": "slack"
},
{
"option": "email"
}
]
}
}
]
},
"formDescription": "Submit AI-generated content for multi-channel approval routing via Slack or Email"
},
"typeVersion": 2.5
},
{
"id": "b2a3aa4d-ad53-4fa2-aeeb-758524f32675",
"name": "AI Agent1",
"type": "@n8n/n8n-nodes-langchain.agent",
"position": [
-1248,
1296
],
"parameters": {
"text": "=Enhance the following content for publishing. Make it more engaging and professional while keeping the original message intact. Return only the enhanced content, nothing else. Keep it short please.\n\nContent: {{ $json['Content Body'] }}",
"options": {},
"promptType": "define"
},
"typeVersion": 3.1
},
{
"id": "316833b7-3a56-4c0c-8f18-b3fc9e5433f2",
"name": "OpenAI Chat Model",
"type": "@n8n/n8n-nodes-langchain.lmChatOpenAi",
"position": [
-1184,
1520
],
"parameters": {
"model": {
"__rl": true,
"mode": "list",
"value": "gpt-4o",
"cachedResultName": "gpt-4o"
},
"options": {},
"builtInTools": {}
},
"credentials": {
"openAiApi": {
"name": "<your credential>"
}
},
"typeVersion": 1.3
},
{
"id": "9988eb6a-b3bc-4caf-9583-9d95d82982e9",
"name": "Route by Channel",
"type": "n8n-nodes-base.switch",
"position": [
-896,
1296
],
"parameters": {
"rules": {
"values": [
{
"outputKey": "Slack",
"conditions": {
"options": {
"version": 3,
"leftValue": "",
"caseSensitive": true,
"typeValidation": "strict"
},
"combinator": "and",
"conditions": [
{
"id": "fd55a0f7-397f-480b-97f2-b4311713d7bf",
"operator": {
"type": "string",
"operation": "equals"
},
"leftValue": "={{ $('On form submission1').item.json['Approval Channel'] }}",
"rightValue": "slack"
}
]
},
"renameOutput": true
},
{
"outputKey": "Email",
"conditions": {
"options": {
"version": 3,
"leftValue": "",
"caseSensitive": true,
"typeValidation": "strict"
},
"combinator": "and",
"conditions": [
{
"id": "e0cf2764-9264-4f84-b789-7e6491f2b7bf",
"operator": {
"name": "filter.operator.equals",
"type": "string",
"operation": "equals"
},
"leftValue": "={{ $('On form submission1').item.json['Approval Channel'] }}",
"rightValue": "email"
}
]
},
"renameOutput": true
}
]
},
"options": {}
},
"typeVersion": 3.4
},
{
"id": "cad71c5b-918c-40a1-ada5-4baf93396386",
"name": "Slack Approval Request",
"type": "n8n-nodes-base.slack",
"position": [
-672,
1104
],
"parameters": {
"user": {
"__rl": true,
"mode": "list",
"value": "U0AB7QP5H1B",
"cachedResultName": "elvissaravia"
},
"message": "=*Content Approval Required*\n\n*Original:*\n{{ $('On form submission1').item.json['Content Body'].substring(0,300) }}\n\n*AI Enhanced:*\n{{ $json.output.substring(0,300) }}",
"options": {
"limitWaitTime": {
"values": {
"resumeUnit": "minutes",
"resumeAmount": 2
}
}
},
"operation": "sendAndWait",
"authentication": "oAuth2",
"approvalOptions": {
"values": {
"approvalType": "double",
"disapproveLabel": "Reject"
}
}
},
"credentials": {
"slackOAuth2Api": {
"name": "<your credential>"
}
},
"typeVersion": 2.2
},
{
"id": "5efdfe87-6d20-4fef-ba90-0c224e15b815",
"name": "Slack Decision",
"type": "n8n-nodes-base.switch",
"position": [
-448,
1088
],
"parameters": {
"rules": {
"values": [
{
"outputKey": "Timed Out",
"conditions": {
"options": {
"version": 3,
"leftValue": "",
"caseSensitive": true,
"typeValidation": "loose"
},
"combinator": "and",
"conditions": [
{
"id": "77d67b45-6916-4cab-986b-cecc0ece5bfd",
"operator": {
"type": "string",
"operation": "empty",
"singleValue": true
},
"leftValue": "={{ $json.data }}",
"rightValue": ""
}
]
},
"renameOutput": true
},
{
"outputKey": "Approved",
"conditions": {
"options": {
"version": 3,
"leftValue": "",
"caseSensitive": true,
"typeValidation": "loose"
},
"combinator": "and",
"conditions": [
{
"id": "557bf7ff-70e9-4732-8620-a7b0e22be3a5",
"operator": {
"type": "string",
"operation": "equals"
},
"leftValue": "={{ $json.data.approved }}",
"rightValue": "true"
}
]
},
"renameOutput": true
},
{
"outputKey": "Rejected",
"conditions": {
"options": {
"version": 3,
"leftValue": "",
"caseSensitive": true,
"typeValidation": "loose"
},
"combinator": "and",
"conditions": [
{
"id": "6621782e-1c23-4e2e-b125-e962e30fd0b8",
"operator": {
"type": "string",
"operation": "equals"
},
"leftValue": "={{ $json.data.approved }}",
"rightValue": "false"
}
]
},
"renameOutput": true
}
]
},
"options": {},
"looseTypeValidation": true
},
"typeVersion": 3.4
},
{
"id": "b9f8c952-c7cc-405d-85f1-84e8d7eba3a9",
"name": "Publish Content",
"type": "n8n-nodes-base.code",
"position": [
-224,
1104
],
"parameters": {
"jsCode": "// Content approved - publish\nconst items = $input.all();\nreturn items.map(item => ({\n json: {\n status: 'published',\n content: item.json.ai_enhanced_content || 'Approved content',\n published_at: new Date().toISOString()\n }\n}));"
},
"typeVersion": 2
},
{
"id": "8ac35e39-93c6-49bb-b569-a43b49d4064a",
"name": "Handle Rejection",
"type": "n8n-nodes-base.code",
"position": [
-224,
1296
],
"parameters": {
"jsCode": "// Content rejected - route back for revision\nconst items = $input.all();\nreturn items.map(item => ({\n json: {\n status: 'rejected',\n content: item.json.original_content || 'Rejected',\n rejected_at: new Date().toISOString(),\n action: 'Send back to content team for revision'\n }\n}));"
},
"typeVersion": 2
},
{
"id": "b4914384-c828-470c-bcc5-66890d5c581f",
"name": "Escalate to Manager",
"type": "n8n-nodes-base.gmail",
"position": [
-224,
1488
],
"parameters": {
"sendTo": "ellfae@gmail.com",
"message": "=A content approval request received no response within 24 hours.\n\nOriginal content submitted:\n{{ $('On form submission1').item.json['Content Body'].substring(0,500) }}\n\nThe request was sent via {{ $('On form submission1').item.json['Approval Channel'] }} and no decision was made within the allowed timeframe.\n\nPlease review and take action.",
"options": {},
"subject": "=ESCALATION: Content Approval Timed Out",
"emailType": "text"
},
"credentials": {
"gmailOAuth2": {
"name": "<your credential>"
}
},
"typeVersion": 2.1
},
{
"id": "81b339e6-6344-42ea-bb30-40bfa69bbe09",
"name": "Email Decision",
"type": "n8n-nodes-base.switch",
"position": [
-448,
1472
],
"parameters": {
"rules": {
"values": [
{
"outputKey": "Timed Out",
"conditions": {
"options": {
"version": 3,
"leftValue": "",
"caseSensitive": true,
"typeValidation": "loose"
},
"combinator": "and",
"conditions": [
{
"id": "06bbf56d-4498-4412-917d-688511b8de9f",
"operator": {
"type": "string",
"operation": "empty",
"singleValue": true
},
"leftValue": "={{ $json.data }}",
"rightValue": ""
}
]
},
"renameOutput": true
},
{
"outputKey": "Approved",
"conditions": {
"options": {
"version": 3,
"leftValue": "",
"caseSensitive": true,
"typeValidation": "loose"
},
"combinator": "and",
"conditions": [
{
"id": "ae650af8-9e9e-41ca-a31d-65dfcc1ca3be",
"operator": {
"type": "string",
"operation": "equals"
},
"leftValue": "={{ $json.data.approved }}",
"rightValue": "true"
}
]
},
"renameOutput": true
},
{
"outputKey": "Rejected",
"conditions": {
"options": {
"version": 3,
"leftValue": "",
"caseSensitive": true,
"typeValidation": "loose"
},
"combinator": "and",
"conditions": [
{
"id": "8a5edea2-7dfc-43f9-99ab-827da9d9f2b6",
"operator": {
"type": "string",
"operation": "equals"
},
"leftValue": "={{ $json.data.approved }}",
"rightValue": "false"
}
]
},
"renameOutput": true
}
]
},
"options": {},
"looseTypeValidation": true
},
"typeVersion": 3.4
},
{
"id": "23dbf2b0-b565-4b89-b628-ccb8d8bea5c7",
"name": "Email Approval Request",
"type": "n8n-nodes-base.gmail",
"position": [
-672,
1488
],
"parameters": {
"sendTo": "ellfae@gmail.com",
"message": "=Content Approval Required\n\nOriginal:\n{{ $('On form submission1').item.json['Content Body'] }}\n\nAI Enhanced:\n{{ $json.output }}\n\nPlease review the content above and approve or reject.",
"options": {
"limitWaitTime": {
"values": {
"resumeUnit": "minutes"
}
}
},
"subject": "=Content Approval Required",
"operation": "sendAndWait",
"approvalOptions": {
"values": {
"approvalType": "double",
"disapproveLabel": "Reject"
}
}
},
"credentials": {
"gmailOAuth2": {
"name": "<your credential>"
}
},
"typeVersion": 2.1
},
{
"id": "090c7433-0d2b-4703-88b0-814eb18347e1",
"name": "Sticky Note",
"type": "n8n-nodes-base.stickyNote",
"position": [
-2368,
1040
],
"parameters": {
"width": 752,
"height": 656,
"content": "## Multi-Channel Content Approval with Slack and Email Escalation\n\n### How it works\n1. **Form Trigger** collects a content draft and preferred review channel (Slack or Email).\n2. **AI Agent** enhances the submitted content using the connected LLM.\n3. **Route by Channel** (Switch node) directs the approval request to Slack or Email based on the form selection.\n4. **Approval nodes** send the content with Approve/Reject buttons and pause until the reviewer responds or the timeout expires.\n5. **Decision nodes** handle three outcomes: approved routes to publish, rejected routes to handling, timed out escalates to a manager via email.\n\n### Setup\n- Connect your **LLM credentials** (e.g., OpenAI) to the Chat Model node\n- Connect your **Slack credentials** and set the target channel on the Slack Approval Request node\n- Connect your **Gmail credentials** on the Email Approval Request and Escalate to Manager nodes\n- Set timeout durations on each approval node (e.g., 2-4 hours for operational reviews)\n\n### Customization\n- Add more review channels (e.g., Microsoft Teams) by extending the Switch node\n- Replace the Publish Content and Handle Rejection code nodes with your actual publishing logic\n\n\nThis template is a learning companion to the Production AI Playbook, a series that explores strategies, shares best practices, and provides practical examples for building reliable AI systems in n8n. \n\n[Link to blog](https://go.n8n.io/PAP-HO-Blog)\n"
},
"typeVersion": 1
},
{
"id": "e629a92b-3259-49f6-8283-5527a834272a",
"name": "Sticky Note1",
"type": "n8n-nodes-base.stickyNote",
"position": [
-1536,
1024
],
"parameters": {
"color": 7,
"width": 544,
"height": 704,
"content": "## Submit & Enhance\n"
},
"typeVersion": 1
},
{
"id": "d4404a82-64ea-42d0-900b-64ccf968754b",
"name": "Sticky Note2",
"type": "n8n-nodes-base.stickyNote",
"position": [
-960,
1024
],
"parameters": {
"color": 7,
"width": 448,
"height": 704,
"content": "## Route & Review"
},
"typeVersion": 1
},
{
"id": "bee79d99-d6b7-45ab-98eb-b41d739a837e",
"name": "Sticky Note3",
"type": "n8n-nodes-base.stickyNote",
"position": [
-480,
1024
],
"parameters": {
"color": 7,
"width": 448,
"height": 704,
"content": "## Decide & Act"
},
"typeVersion": 1
}
],
"connections": {
"AI Agent1": {
"main": [
[
{
"node": "Route by Channel",
"type": "main",
"index": 0
}
]
]
},
"Email Decision": {
"main": [
[
{
"node": "Escalate to Manager",
"type": "main",
"index": 0
}
],
[
{
"node": "Publish Content",
"type": "main",
"index": 0
}
],
[
{
"node": "Handle Rejection",
"type": "main",
"index": 0
}
]
]
},
"Slack Decision": {
"main": [
[
{
"node": "Escalate to Manager",
"type": "main",
"index": 0
}
],
[
{
"node": "Publish Content",
"type": "main",
"index": 0
}
],
[
{
"node": "Handle Rejection",
"type": "main",
"index": 0
}
]
]
},
"Route by Channel": {
"main": [
[
{
"node": "Slack Approval Request",
"type": "main",
"index": 0
}
],
[
{
"node": "Email Approval Request",
"type": "main",
"index": 0
}
]
]
},
"OpenAI Chat Model": {
"ai_languageModel": [
[
{
"node": "AI Agent1",
"type": "ai_languageModel",
"index": 0
}
]
]
},
"On form submission1": {
"main": [
[
{
"node": "AI Agent1",
"type": "main",
"index": 0
}
]
]
},
"Email Approval Request": {
"main": [
[
{
"node": "Email Decision",
"type": "main",
"index": 0
}
]
]
},
"Slack Approval Request": {
"main": [
[
{
"node": "Slack Decision",
"type": "main",
"index": 0
}
]
]
}
}
}
Credentials you'll need
Each integration node will prompt for credentials when you import. We strip credential IDs before publishing — you'll add your own.
gmailOAuth2openAiApislackOAuth2Api
Pro
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About this workflow
Route AI-generated content to reviewers on Slack or email, with automatic escalation if nobody responds. This template demonstrates a full multi-channel review workflow with timeout handling.
Source: https://n8n.io/workflows/13849/ — original creator credit. Request a take-down →
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