This workflow follows the Error Trigger → Gmail recipe pattern — see all workflows that pair these two integrations.
The workflow JSON
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{
"name": "Human Approval AI Response",
"nodes": [
{
"parameters": {
"content": "## Human Approval AI Response\n\n**Purpose:** A reusable human-in-the-loop pattern. Incoming messages are drafted by AI, sent to a human for review, then dispatched (or discarded) based on their decision.\n\n**Approval Flow:**\n1. Message arrives via Webhook\n2. OpenAI drafts a response + confidence score\n3. Draft is posted to Slack with Approve / Reject / Edit buttons\n4. Workflow pauses, waiting for a human decision\n5. On resume: route by decision type\n - **Approved** \u2192 Send via Gmail, log to Sheets\n - **Rejected** \u2192 Log rejection, notify requester\n - **Edited** \u2192 Send edited version via Gmail, log to Sheets\n\n**How to adapt this workflow:**\n- Swap the Gmail send for any delivery channel\n- Swap the Webhook trigger for Email, Slack, or Form trigger\n- Adjust confidence threshold for auto-approval\n- Connect to your ticketing system via the log step",
"height": 460,
"width": 420,
"color": 5
},
"id": "sticky-intro",
"name": "Intro Note",
"type": "n8n-nodes-base.stickyNote",
"typeVersion": 1,
"position": [
-520,
-280
]
},
{
"parameters": {
"content": "### Approval Mechanism\nThe Wait node generates a unique resume URL per execution. This URL is posted in Slack. Approvers POST to this URL with:\n```json\n{\n \"decision\": \"approved\" | \"rejected\" | \"edited\",\n \"edited_response\": \"...\" // only for edited\n \"rejection_reason\": \"...\" // only for rejected\n}\n```\nThe Wait node has a 24-hour timeout \u2014 after that the request auto-expires and is logged as timed_out.",
"height": 280,
"width": 380,
"color": 4
},
"id": "sticky-approval",
"name": "Approval Mechanism Note",
"type": "n8n-nodes-base.stickyNote",
"typeVersion": 1,
"position": [
860,
-280
]
},
{
"parameters": {
"content": "### AI Confidence Levels\n- **high** confidence \u2192 Slack message shows green, suggests quick approval\n- **medium** \u2192 Yellow, recommends review\n- **low** \u2192 Red, strong recommendation to edit before sending\n\nIf `needs_human_review` is false AND confidence is high, you can add an IF node before the Wait to auto-approve. Not recommended for customer-facing responses.",
"height": 220,
"width": 360,
"color": 7
},
"id": "sticky-confidence",
"name": "Confidence Levels Note",
"type": "n8n-nodes-base.stickyNote",
"typeVersion": 1,
"position": [
1300,
-280
]
},
{
"parameters": {
"content": "### Switch Routing\nThe Switch node routes on `$json.body.decision`:\n- Route 0: `approved` \u2192 Gmail send \u2192 Sheets log\n- Route 1: `rejected` \u2192 Sheets log (no send)\n- Route 2: `edited` \u2192 Gmail send edited \u2192 Sheets log\n- Route 3 (fallback): `timed_out` \u2192 Sheets log as expired",
"height": 200,
"width": 320,
"color": 6
},
"id": "sticky-switch",
"name": "Switch Routing Note",
"type": "n8n-nodes-base.stickyNote",
"typeVersion": 1,
"position": [
1720,
-280
]
},
{
"parameters": {
"httpMethod": "POST",
"path": "ai-response-request",
"responseMode": "responseNode",
"options": {}
},
"id": "webhook-trigger",
"name": "Receive Request",
"type": "n8n-nodes-base.webhook",
"typeVersion": 2,
"position": [
-160,
60
]
},
{
"parameters": {
"assignments": {
"assignments": [
{
"id": "i1",
"name": "request_id",
"value": "={{ 'REQ-' + Date.now() + '-' + Math.random().toString(36).substr(2, 6).toUpperCase() }}",
"type": "string"
},
{
"id": "i2",
"name": "original_message",
"value": "={{ $json.body.message || $json.body.content || $json.body.text || '' }}",
"type": "string"
},
{
"id": "i3",
"name": "sender_name",
"value": "={{ $json.body.sender_name || $json.body.from_name || 'Unknown Sender' }}",
"type": "string"
},
{
"id": "i4",
"name": "sender_email",
"value": "={{ $json.body.sender_email || $json.body.from_email || '' }}",
"type": "string"
},
{
"id": "i5",
"name": "context",
"value": "={{ $json.body.context || $json.body.subject || '' }}",
"type": "string"
},
{
"id": "i6",
"name": "priority",
"value": "={{ $json.body.priority || 'normal' }}",
"type": "string"
},
{
"id": "i7",
"name": "received_at",
"value": "={{ new Date().toISOString() }}",
"type": "string"
},
{
"id": "i8",
"name": "channel",
"value": "={{ $json.body.channel || 'email' }}",
"type": "string"
}
]
},
"options": {}
},
"id": "set-normalize",
"name": "Normalize Input",
"type": "n8n-nodes-base.set",
"typeVersion": 3.4,
"position": [
80,
60
]
},
{
"parameters": {
"method": "POST",
"url": "https://api.openai.com/v1/chat/completions",
"authentication": "genericCredentialType",
"genericAuthType": "httpHeaderAuth",
"sendHeaders": true,
"headerParameters": {
"parameters": [
{
"name": "Content-Type",
"value": "application/json"
}
]
},
"sendBody": true,
"specifyBody": "json",
"jsonBody": "={\n \"model\": \"gpt-4o\",\n \"temperature\": 0.5,\n \"response_format\": { \"type\": \"json_object\" },\n \"messages\": [\n {\n \"role\": \"system\",\n \"content\": \"You are a professional communications assistant. Draft a response to an incoming message and assess whether a human should review it before sending.\\n\\nReturn a JSON object with exactly these fields:\\n- draft_response (string): A professional, complete response to the message. Match the tone of the original (formal/casual). Do not include placeholders \u2014 write the actual response.\\n- confidence (string): 'high', 'medium', or 'low' \u2014 your confidence the draft is ready to send without edits\\n- needs_human_review (boolean): true if the message is sensitive, ambiguous, complaints, legal/financial, or if you are unsure\\n- reason_for_review (string): Explanation of why review is needed. Empty string if needs_human_review is false.\\n- tone (string): The tone of the draft \u2014 'formal', 'friendly', 'empathetic', 'technical', etc.\\n- suggested_subject (string): If this is an email response, suggest an appropriate subject line\\n- key_points_addressed (array of strings): List of the main points from the original message that the draft addresses\\n\\nReturn ONLY valid JSON.\"\n },\n {\n \"role\": \"user\",\n \"content\": \"Draft a response to this incoming message:\\n\\nSender: {{ $json.sender_name }} <{{ $json.sender_email }}>\\nChannel: {{ $json.channel }}\\nContext/Subject: {{ $json.context }}\\nPriority: {{ $json.priority }}\\n\\nMessage:\\n{{ $json.original_message }}\"\n }\n ]\n}",
"options": {
"timeout": 30000
}
},
"id": "openai-draft",
"name": "OpenAI: Draft Response",
"type": "n8n-nodes-base.httpRequest",
"typeVersion": 4.2,
"position": [
320,
60
],
"credentials": {
"httpHeaderAuth": {
"name": "<your credential>"
}
}
},
{
"parameters": {
"assignments": {
"assignments": [
{
"id": "d1",
"name": "draft_response",
"value": "={{ JSON.parse($json.choices[0].message.content).draft_response }}",
"type": "string"
},
{
"id": "d2",
"name": "confidence",
"value": "={{ JSON.parse($json.choices[0].message.content).confidence || 'medium' }}",
"type": "string"
},
{
"id": "d3",
"name": "needs_human_review",
"value": "={{ JSON.parse($json.choices[0].message.content).needs_human_review !== false }}",
"type": "boolean"
},
{
"id": "d4",
"name": "reason_for_review",
"value": "={{ JSON.parse($json.choices[0].message.content).reason_for_review || '' }}",
"type": "string"
},
{
"id": "d5",
"name": "tone",
"value": "={{ JSON.parse($json.choices[0].message.content).tone || 'professional' }}",
"type": "string"
},
{
"id": "d6",
"name": "suggested_subject",
"value": "={{ JSON.parse($json.choices[0].message.content).suggested_subject || 'Re: Your Message' }}",
"type": "string"
},
{
"id": "d7",
"name": "key_points_addressed",
"value": "={{ JSON.parse($json.choices[0].message.content).key_points_addressed || [] }}",
"type": "array"
},
{
"id": "d8",
"name": "request_id",
"value": "={{ $('Normalize Input').item.json.request_id }}",
"type": "string"
},
{
"id": "d9",
"name": "original_message",
"value": "={{ $('Normalize Input').item.json.original_message }}",
"type": "string"
},
{
"id": "d10",
"name": "sender_name",
"value": "={{ $('Normalize Input').item.json.sender_name }}",
"type": "string"
},
{
"id": "d11",
"name": "sender_email",
"value": "={{ $('Normalize Input').item.json.sender_email }}",
"type": "string"
},
{
"id": "d12",
"name": "context",
"value": "={{ $('Normalize Input').item.json.context }}",
"type": "string"
},
{
"id": "d13",
"name": "received_at",
"value": "={{ $('Normalize Input').item.json.received_at }}",
"type": "string"
},
{
"id": "d14",
"name": "confidence_emoji",
"value": "={{ JSON.parse($json.choices[0].message.content).confidence === 'high' ? ':large_green_circle:' : JSON.parse($json.choices[0].message.content).confidence === 'medium' ? ':large_yellow_circle:' : ':red_circle:' }}",
"type": "string"
}
]
},
"options": {}
},
"id": "set-draft",
"name": "Parse AI Draft",
"type": "n8n-nodes-base.set",
"typeVersion": 3.4,
"position": [
560,
60
]
},
{
"parameters": {
"resource": "message",
"operation": "post",
"channel": {
"__rl": true,
"value": "#response-approvals",
"mode": "name"
},
"text": "={{ $json.confidence_emoji }} *New Response Awaiting Approval*\n\n*Request ID:* `{{ $json.request_id }}`\n*From:* {{ $json.sender_name }} <{{ $json.sender_email }}>\n*Context:* {{ $json.context }}\n*AI Confidence:* {{ $json.confidence.toUpperCase() }}\n*Needs Review:* {{ $json.needs_human_review ? 'Yes' : 'No' }}\n{{ $json.reason_for_review ? '*Review Reason:* ' + $json.reason_for_review : '' }}\n\n---\n:speech_balloon: *Original Message:*\n> {{ $json.original_message.replace(/\\n/g, '\\n> ') }}\n\n---\n:pencil: *AI Draft Response:*\n```{{ $json.draft_response }}```\n\n*Tone:* {{ $json.tone }} | *Suggested Subject:* {{ $json.suggested_subject }}\n\n---\n:point_right: *To respond, POST to the approval webhook:*\n`{{ $execution.resumeUrl }}`\n\nPayload options:\n\u2022 `{\"decision\": \"approved\"}` \u2014 send as-is\n\u2022 `{\"decision\": \"rejected\", \"rejection_reason\": \"your reason\"}` \u2014 discard\n\u2022 `{\"decision\": \"edited\", \"edited_response\": \"your edited text\"}` \u2014 send your version\n\n_This request expires in 24 hours._",
"otherOptions": {
"unfurl_links": false
}
},
"id": "slack-approval-request",
"name": "Slack: Send for Approval",
"type": "n8n-nodes-base.slack",
"typeVersion": 2.3,
"position": [
800,
60
],
"credentials": {
"slackOAuth2Api": {
"name": "<your credential>"
}
}
},
{
"parameters": {
"resume": "webhook",
"options": {
"webhookSuffix": "=approval-{{ $('Parse AI Draft').item.json.request_id }}",
"responseData": "firstEntryJson",
"limitWaitTime": true,
"limitType": "afterTimeInterval",
"resumeAmount": 24,
"resumeUnit": "hours"
}
},
"id": "wait-approval",
"name": "Wait: Human Decision",
"type": "n8n-nodes-base.wait",
"typeVersion": 1.1,
"position": [
1040,
60
]
},
{
"parameters": {
"rules": {
"values": [
{
"conditions": {
"options": {
"caseSensitive": false,
"leftValue": "",
"typeValidation": "strict"
},
"conditions": [
{
"leftValue": "={{ $json.body.decision }}",
"rightValue": "approved",
"operator": {
"type": "string",
"operation": "equals"
}
}
],
"combinator": "and"
},
"outputIndex": 0
},
{
"conditions": {
"options": {
"caseSensitive": false,
"leftValue": "",
"typeValidation": "strict"
},
"conditions": [
{
"leftValue": "={{ $json.body.decision }}",
"rightValue": "rejected",
"operator": {
"type": "string",
"operation": "equals"
}
}
],
"combinator": "and"
},
"outputIndex": 1
},
{
"conditions": {
"options": {
"caseSensitive": false,
"leftValue": "",
"typeValidation": "strict"
},
"conditions": [
{
"leftValue": "={{ $json.body.decision }}",
"rightValue": "edited",
"operator": {
"type": "string",
"operation": "equals"
}
}
],
"combinator": "and"
},
"outputIndex": 2
}
]
},
"options": {
"fallbackOutput": 3
}
},
"id": "switch-decision",
"name": "Route by Decision",
"type": "n8n-nodes-base.switch",
"typeVersion": 3.2,
"position": [
1280,
60
]
},
{
"parameters": {
"resource": "message",
"operation": "sendHtml",
"toList": [
"={{ $('Parse AI Draft').item.json.sender_email }}"
],
"subject": "={{ $('Parse AI Draft').item.json.suggested_subject }}",
"message": "=<html><body style=\"font-family: Arial, sans-serif; line-height: 1.6;\">\n{{ $('Parse AI Draft').item.json.draft_response.replace(/\\n/g, '<br>') }}\n</body></html>",
"options": {}
},
"id": "gmail-send-approved",
"name": "Gmail: Send Approved Response",
"type": "n8n-nodes-base.gmail",
"typeVersion": 2.1,
"position": [
1520,
-160
],
"credentials": {
"gmailOAuth2": {
"name": "<your credential>"
}
}
},
{
"parameters": {
"resource": "message",
"operation": "sendHtml",
"toList": [
"={{ $('Parse AI Draft').item.json.sender_email }}"
],
"subject": "={{ $('Parse AI Draft').item.json.suggested_subject }}",
"message": "=<html><body style=\"font-family: Arial, sans-serif; line-height: 1.6;\">\n{{ ($json.body.edited_response || $('Parse AI Draft').item.json.draft_response).replace(/\\n/g, '<br>') }}\n</body></html>",
"options": {}
},
"id": "gmail-send-edited",
"name": "Gmail: Send Edited Response",
"type": "n8n-nodes-base.gmail",
"typeVersion": 2.1,
"position": [
1520,
60
],
"credentials": {
"gmailOAuth2": {
"name": "<your credential>"
}
}
},
{
"parameters": {
"operation": "append",
"documentId": {
"__rl": true,
"value": "YOUR_APPROVALS_SHEET_ID",
"mode": "id"
},
"sheetName": {
"__rl": true,
"value": "Approval Log",
"mode": "list",
"cachedResultName": "Approval Log"
},
"columns": {
"mappingMode": "defineBelow",
"value": {
"Request ID": "={{ $('Parse AI Draft').item.json.request_id }}",
"Sender Name": "={{ $('Parse AI Draft').item.json.sender_name }}",
"Sender Email": "={{ $('Parse AI Draft').item.json.sender_email }}",
"Context": "={{ $('Parse AI Draft').item.json.context }}",
"Original Message": "={{ $('Parse AI Draft').item.json.original_message }}",
"AI Draft": "={{ $('Parse AI Draft').item.json.draft_response }}",
"AI Confidence": "={{ $('Parse AI Draft').item.json.confidence }}",
"Needs Review": "={{ $('Parse AI Draft').item.json.needs_human_review }}",
"Review Reason": "={{ $('Parse AI Draft').item.json.reason_for_review }}",
"Decision": "=approved",
"Final Response Sent": "={{ $('Parse AI Draft').item.json.draft_response }}",
"Decided At": "={{ new Date().toISOString() }}",
"Received At": "={{ $('Parse AI Draft').item.json.received_at }}"
},
"schema": []
},
"options": {}
},
"id": "sheets-log-approved",
"name": "Sheets: Log Approved",
"type": "n8n-nodes-base.googleSheets",
"typeVersion": 4.5,
"position": [
1760,
-160
],
"credentials": {
"googleSheetsOAuth2Api": {
"name": "<your credential>"
}
}
},
{
"parameters": {
"operation": "append",
"documentId": {
"__rl": true,
"value": "YOUR_APPROVALS_SHEET_ID",
"mode": "id"
},
"sheetName": {
"__rl": true,
"value": "Approval Log",
"mode": "list",
"cachedResultName": "Approval Log"
},
"columns": {
"mappingMode": "defineBelow",
"value": {
"Request ID": "={{ $('Parse AI Draft').item.json.request_id }}",
"Sender Name": "={{ $('Parse AI Draft').item.json.sender_name }}",
"Sender Email": "={{ $('Parse AI Draft').item.json.sender_email }}",
"Context": "={{ $('Parse AI Draft').item.json.context }}",
"Original Message": "={{ $('Parse AI Draft').item.json.original_message }}",
"AI Draft": "={{ $('Parse AI Draft').item.json.draft_response }}",
"AI Confidence": "={{ $('Parse AI Draft').item.json.confidence }}",
"Needs Review": "={{ $('Parse AI Draft').item.json.needs_human_review }}",
"Review Reason": "={{ $('Parse AI Draft').item.json.reason_for_review }}",
"Decision": "=rejected",
"Rejection Reason": "={{ $json.body.rejection_reason || 'Not specified' }}",
"Final Response Sent": "=N/A - Rejected",
"Decided At": "={{ new Date().toISOString() }}",
"Received At": "={{ $('Parse AI Draft').item.json.received_at }}"
},
"schema": []
},
"options": {}
},
"id": "sheets-log-rejected",
"name": "Sheets: Log Rejected",
"type": "n8n-nodes-base.googleSheets",
"typeVersion": 4.5,
"position": [
1520,
280
],
"credentials": {
"googleSheetsOAuth2Api": {
"name": "<your credential>"
}
}
},
{
"parameters": {
"operation": "append",
"documentId": {
"__rl": true,
"value": "YOUR_APPROVALS_SHEET_ID",
"mode": "id"
},
"sheetName": {
"__rl": true,
"value": "Approval Log",
"mode": "list",
"cachedResultName": "Approval Log"
},
"columns": {
"mappingMode": "defineBelow",
"value": {
"Request ID": "={{ $('Parse AI Draft').item.json.request_id }}",
"Sender Name": "={{ $('Parse AI Draft').item.json.sender_name }}",
"Sender Email": "={{ $('Parse AI Draft').item.json.sender_email }}",
"Context": "={{ $('Parse AI Draft').item.json.context }}",
"Original Message": "={{ $('Parse AI Draft').item.json.original_message }}",
"AI Draft": "={{ $('Parse AI Draft').item.json.draft_response }}",
"AI Confidence": "={{ $('Parse AI Draft').item.json.confidence }}",
"Needs Review": "={{ $('Parse AI Draft').item.json.needs_human_review }}",
"Review Reason": "={{ $('Parse AI Draft').item.json.reason_for_review }}",
"Decision": "=edited",
"Final Response Sent": "={{ $json.body.edited_response }}",
"Decided At": "={{ new Date().toISOString() }}",
"Received At": "={{ $('Parse AI Draft').item.json.received_at }}"
},
"schema": []
},
"options": {}
},
"id": "sheets-log-edited",
"name": "Sheets: Log Edited",
"type": "n8n-nodes-base.googleSheets",
"typeVersion": 4.5,
"position": [
1760,
60
],
"credentials": {
"googleSheetsOAuth2Api": {
"name": "<your credential>"
}
}
},
{
"parameters": {
"operation": "append",
"documentId": {
"__rl": true,
"value": "YOUR_APPROVALS_SHEET_ID",
"mode": "id"
},
"sheetName": {
"__rl": true,
"value": "Approval Log",
"mode": "list",
"cachedResultName": "Approval Log"
},
"columns": {
"mappingMode": "defineBelow",
"value": {
"Request ID": "={{ $('Parse AI Draft').item.json.request_id }}",
"Sender Name": "={{ $('Parse AI Draft').item.json.sender_name }}",
"Sender Email": "={{ $('Parse AI Draft').item.json.sender_email }}",
"Context": "={{ $('Parse AI Draft').item.json.context }}",
"Original Message": "={{ $('Parse AI Draft').item.json.original_message }}",
"AI Draft": "={{ $('Parse AI Draft').item.json.draft_response }}",
"AI Confidence": "={{ $('Parse AI Draft').item.json.confidence }}",
"Decision": "=timed_out",
"Final Response Sent": "=N/A - Timed Out (24h)",
"Decided At": "={{ new Date().toISOString() }}",
"Received At": "={{ $('Parse AI Draft').item.json.received_at }}"
},
"schema": []
},
"options": {}
},
"id": "sheets-log-timeout",
"name": "Sheets: Log Timed Out",
"type": "n8n-nodes-base.googleSheets",
"typeVersion": 4.5,
"position": [
1520,
460
],
"credentials": {
"googleSheetsOAuth2Api": {
"name": "<your credential>"
}
}
},
{
"parameters": {
"respondWith": "json",
"responseBody": "={{ JSON.stringify({ success: true, message: 'Request received. AI is drafting a response.', request_id: $('Normalize Input').item.json.request_id }) }}",
"options": {
"responseCode": 200
}
},
"id": "webhook-response",
"name": "Respond to Webhook",
"type": "n8n-nodes-base.respondToWebhook",
"typeVersion": 1.1,
"position": [
320,
280
]
},
{
"parameters": {},
"id": "error-trigger",
"name": "Error Trigger",
"type": "n8n-nodes-base.errorTrigger",
"typeVersion": 1,
"position": [
1760,
540
]
},
{
"parameters": {
"resource": "message",
"operation": "post",
"channel": {
"__rl": true,
"value": "#workflow-errors",
"mode": "name"
},
"text": "=:red_circle: *Workflow Error: Human Approval AI Response*\n\n*Node:* {{ $json.execution.lastNodeExecuted }}\n*Error:* {{ $json.execution.error.message }}\n*Execution ID:* {{ $json.execution.id }}\n*Time:* {{ new Date().toISOString() }}\n\nThe request may need to be manually processed. Check execution logs for details.",
"otherOptions": {}
},
"id": "slack-error",
"name": "Slack: Error Alert",
"type": "n8n-nodes-base.slack",
"typeVersion": 2.3,
"position": [
2000,
540
],
"credentials": {
"slackOAuth2Api": {
"name": "<your credential>"
}
}
}
],
"connections": {
"Receive Request": {
"main": [
[
{
"node": "Normalize Input",
"type": "main",
"index": 0
}
]
]
},
"Normalize Input": {
"main": [
[
{
"node": "OpenAI: Draft Response",
"type": "main",
"index": 0
},
{
"node": "Respond to Webhook",
"type": "main",
"index": 0
}
]
]
},
"OpenAI: Draft Response": {
"main": [
[
{
"node": "Parse AI Draft",
"type": "main",
"index": 0
}
]
]
},
"Parse AI Draft": {
"main": [
[
{
"node": "Slack: Send for Approval",
"type": "main",
"index": 0
}
]
]
},
"Slack: Send for Approval": {
"main": [
[
{
"node": "Wait: Human Decision",
"type": "main",
"index": 0
}
]
]
},
"Wait: Human Decision": {
"main": [
[
{
"node": "Route by Decision",
"type": "main",
"index": 0
}
]
]
},
"Route by Decision": {
"main": [
[
{
"node": "Gmail: Send Approved Response",
"type": "main",
"index": 0
}
],
[
{
"node": "Sheets: Log Rejected",
"type": "main",
"index": 0
}
],
[
{
"node": "Gmail: Send Edited Response",
"type": "main",
"index": 0
}
],
[
{
"node": "Sheets: Log Timed Out",
"type": "main",
"index": 0
}
]
]
},
"Gmail: Send Approved Response": {
"main": [
[
{
"node": "Sheets: Log Approved",
"type": "main",
"index": 0
}
]
]
},
"Gmail: Send Edited Response": {
"main": [
[
{
"node": "Sheets: Log Edited",
"type": "main",
"index": 0
}
]
]
},
"Error Trigger": {
"main": [
[
{
"node": "Slack: Error Alert",
"type": "main",
"index": 0
}
]
]
}
},
"settings": {
"executionOrder": "v1",
"saveManualExecutions": true,
"callerPolicy": "workflowsFromSameOwner",
"errorWorkflow": "",
"saveExecutionProgress": true,
"saveDataSuccessExecution": "all",
"saveDataErrorExecution": "all",
"timezone": "America/New_York"
},
"staticData": null,
"tags": [
"human-in-the-loop",
"approval",
"openai",
"gmail",
"slack",
"google-sheets",
"reusable-pattern"
],
"triggerCount": 1,
"updatedAt": "2026-05-14T00:00:00.000Z",
"versionId": "08-human-approval-v1",
"active": false,
"id": "workflow-08"
}
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.
gmailOAuth2googleSheetsOAuth2ApihttpHeaderAuthslackOAuth2Api
Pro
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About this workflow
Human Approval AI Response. Uses httpRequest, slack, gmail, googleSheets. Webhook trigger; 20 nodes.
Source: https://github.com/humayun-sarfraz/n8n-ai-workflow-kit/blob/main/workflows/08-human-approval-ai-response.json — original creator credit. Request a take-down →
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