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 →
{
"name": "Polygam Content Automation (Final Architecture)",
"nodes": [
{
"parameters": {
"httpMethod": "POST",
"path": "polygam-project",
"responseMode": "responseNode",
"authentication": "headerAuth",
"options": {}
},
"id": "Webhook",
"name": "Webhook Trigger",
"type": "n8n-nodes-base.webhook",
"typeVersion": 1.1,
"position": [
200,
300
],
"credentials": {
"httpHeaderAuth": {
"name": "<your credential>"
}
}
},
{
"parameters": {
"jsCode": "const input = $input.first().json;\nreturn { json: {\n project_name: input.project_name || input.title || \"Unnamed Project\",\n client: input.client || \"Unknown\",\n location: input.location || \"\",\n description: input.description || input.details || \"\",\n challenges: input.challenges || \"\",\n solution: input.solution || \"\",\n results: input.results || \"\",\n raw: input\n}};"
},
"id": "Normalizer",
"name": "Input Normalizer",
"type": "n8n-nodes-base.code",
"typeVersion": 2,
"position": [
420,
300
]
},
{
"parameters": {
"authentication": "headerAuth",
"requestMethod": "POST",
"url": "https://api.openai.com/v1/chat/completions",
"sendBody": true,
"bodyParameters": {
"parameters": [
{
"name": "model",
"value": "gpt-4o"
},
{
"name": "temperature",
"value": "0.2"
},
{
"name": "messages",
"value": "={{[{\"role\":\"system\",\"content\":\"You are an engineering analyst. Extract a structured project profile from raw information about water and wastewater infrastructure projects. Return ONLY JSON.\"},{\"role\":\"user\",\"content\":\"Project:\\nName: \"+$json.project_name+\"\\nClient: \"+$json.client+\"\\nLocation: \"+$json.location+\"\\nDescription: \"+$json.description+\"\\nChallenges: \"+$json.challenges+\"\\nSolution: \"+$json.solution+\"\\nResults: \"+$json.results}]}}"
}
]
},
"options": {}
},
"id": "Analyst",
"name": "Project Analyst",
"type": "n8n-nodes-base.httpRequest",
"typeVersion": 4.2,
"position": [
640,
300
],
"credentials": {
"httpHeaderAuth": {
"name": "<your credential>"
}
}
},
{
"parameters": {
"jsCode": "const content = $input.first().json.choices[0].message.content;\nlet parsed;\ntry {\n parsed = JSON.parse(content);\n} catch (e) {\n const start = content.indexOf('{');\n const end = content.lastIndexOf('}');\n if (start !== -1 && end !== -1 && end > start) {\n try {\n parsed = JSON.parse(content.slice(start, end + 1));\n } catch (e2) {\n parsed = { raw: content };\n }\n } else {\n parsed = { raw: content };\n }\n}\nreturn { json: parsed };"
},
"id": "ParseProfile",
"name": "Parse Profile",
"type": "n8n-nodes-base.code",
"typeVersion": 2,
"position": [
860,
300
]
},
{
"parameters": {
"authentication": "headerAuth",
"requestMethod": "POST",
"url": "https://api.openai.com/v1/chat/completions",
"sendBody": true,
"bodyParameters": {
"parameters": [
{
"name": "model",
"value": "gpt-4o"
},
{
"name": "messages",
"value": "={{[{\"role\":\"system\",\"content\":\"Generate a structured engineering fact sheet for a water infrastructure project. Separate HARD FACTS from NARRATIVE ANGLES.\"},{\"role\":\"user\",\"content\":\"Profile:\\n\"+JSON.stringify($json)}]}}"
}
]
},
"options": {}
},
"id": "FactSheet",
"name": "Generate Fact Sheet",
"type": "n8n-nodes-base.httpRequest",
"typeVersion": 4.2,
"position": [
1080,
300
],
"credentials": {
"httpHeaderAuth": {
"name": "<your credential>"
}
}
},
{
"parameters": {
"authentication": "headerAuth",
"requestMethod": "POST",
"url": "https://api.openai.com/v1/chat/completions",
"sendBody": true,
"bodyParameters": {
"parameters": [
{
"name": "model",
"value": "gpt-4o"
},
{
"name": "messages",
"value": "={{[{\"role\":\"system\",\"content\":\"Write a professional engineering case study based on the provided fact sheet. Documentary tone, no advertising.\"},{\"role\":\"user\",\"content\":$json.choices[0].message.content}]}}"
}
]
},
"options": {}
},
"id": "CaseStudy",
"name": "Write Case Study",
"type": "n8n-nodes-base.httpRequest",
"typeVersion": 4.2,
"position": [
1300,
300
],
"credentials": {
"httpHeaderAuth": {
"name": "<your credential>"
}
}
},
{
"parameters": {
"authentication": "headerAuth",
"requestMethod": "POST",
"url": "https://api.openai.com/v1/chat/completions",
"sendBody": true,
"bodyParameters": {
"parameters": [
{
"name": "model",
"value": "gpt-4o"
},
{
"name": "messages",
"value": "={{[{\"role\":\"system\",\"content\":\"Act as a technical QA reviewer for engineering publications. Verify technical consistency and return the corrected case study.\"},{\"role\":\"user\",\"content\":$json.choices[0].message.content}]}}"
}
]
},
"options": {}
},
"id": "TechnicalQA",
"name": "Technical QA",
"type": "n8n-nodes-base.httpRequest",
"typeVersion": 4.2,
"position": [
1520,
300
],
"credentials": {
"httpHeaderAuth": {
"name": "<your credential>"
}
}
},
{
"parameters": {
"authentication": "headerAuth",
"requestMethod": "POST",
"url": "https://api.openai.com/v1/chat/completions",
"sendBody": true,
"bodyParameters": {
"parameters": [
{
"name": "model",
"value": "gpt-4o"
},
{
"name": "messages",
"value": "={{[{\"role\":\"system\",\"content\":\"Convert the case study into multiple independent but related Bale-style posts. Each post must have a strong hook, a distinct angle, and stand alone.\"},{\"role\":\"user\",\"content\":$json.choices[0].message.content}]}}"
}
]
},
"options": {}
},
"id": "Serializer",
"name": "Serialize Posts",
"type": "n8n-nodes-base.httpRequest",
"typeVersion": 4.2,
"position": [
1740,
300
],
"credentials": {
"httpHeaderAuth": {
"name": "<your credential>"
}
}
},
{
"parameters": {
"authentication": "headerAuth",
"requestMethod": "POST",
"url": "https://api.openai.com/v1/chat/completions",
"sendBody": true,
"bodyParameters": {
"parameters": [
{
"name": "model",
"value": "gpt-4o"
},
{
"name": "messages",
"value": "={{[{\"role\":\"system\",\"content\":\"Act as a B2B marketing editor. Improve hook strength, clarity, internal Bale SEO, star/emoji formatting. Return final posts only.\"},{\"role\":\"user\",\"content\":$json.choices[0].message.content}]}}"
}
]
},
"options": {}
},
"id": "MarketingQA",
"name": "Marketing QA",
"type": "n8n-nodes-base.httpRequest",
"typeVersion": 4.2,
"position": [
1960,
300
],
"credentials": {
"httpHeaderAuth": {
"name": "<your credential>"
}
}
},
{
"parameters": {
"jsCode": "const posts = $input.first().json.choices[0].message.content;\nconst footer = \"\\n\\n*\ud83d\udd0e \u062c\u0647\u062a \u0645\u0634\u0627\u0648\u0631\u0647 \u0648 \u0627\u0637\u0644\u0627\u0639\u0627\u062a \u0628\u06cc\u0634\u062a\u0631 :*\\n \ud83d\udce8@polygum_support\\n\\n\ud83d\udd17 \u06a9\u0627\u0646\u0627\u0644 \u062a\u062e\u0635\u0635\u06cc *\u067e\u0644\u06cc\u200c\u06af\u0627\u0645* \u062f\u0631 \\\"\u0628\u0644\u0647\\\" :\\n \ud83c\udf10@Polygum\";\nreturn { json: { final_posts: posts + footer } };"
},
"id": "AppendFooter",
"name": "Append Footer",
"type": "n8n-nodes-base.code",
"typeVersion": 2,
"position": [
2180,
300
]
},
{
"parameters": {
"respondWith": "json",
"responseBody": "={{ $json }}",
"options": {}
},
"id": "Response",
"name": "Return Result",
"type": "n8n-nodes-base.respondToWebhook",
"typeVersion": 1,
"position": [
2400,
300
]
}
],
"connections": {
"Webhook Trigger": {
"main": [
[
{
"node": "Input Normalizer",
"type": "main",
"index": 0
}
]
]
},
"Input Normalizer": {
"main": [
[
{
"node": "Project Analyst",
"type": "main",
"index": 0
}
]
]
},
"Project Analyst": {
"main": [
[
{
"node": "Parse Profile",
"type": "main",
"index": 0
}
]
]
},
"Parse Profile": {
"main": [
[
{
"node": "Generate Fact Sheet",
"type": "main",
"index": 0
}
]
]
},
"Generate Fact Sheet": {
"main": [
[
{
"node": "Write Case Study",
"type": "main",
"index": 0
}
]
]
},
"Write Case Study": {
"main": [
[
{
"node": "Technical QA",
"type": "main",
"index": 0
}
]
]
},
"Technical QA": {
"main": [
[
{
"node": "Serialize Posts",
"type": "main",
"index": 0
}
]
]
},
"Serialize Posts": {
"main": [
[
{
"node": "Marketing QA",
"type": "main",
"index": 0
}
]
]
},
"Marketing QA": {
"main": [
[
{
"node": "Append Footer",
"type": "main",
"index": 0
}
]
]
},
"Append Footer": {
"main": [
[
{
"node": "Return Result",
"type": "main",
"index": 0
}
]
]
}
},
"active": false,
"settings": {},
"versionId": "1"
}
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.
httpHeaderAuth
Pro
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About this workflow
Polygam Content Automation (Final Architecture). Uses httpRequest. Webhook trigger; 11 nodes.
Source: https://gist.github.com/tinamansour996/7012ad690799de7a188182d17f7c5bcf — original creator credit. Request a take-down →
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