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{
"name": "72 IT helpdesk + rules first (reference)",
"nodes": [
{
"name": "Question webhook",
"type": "n8n-nodes-base.webhook",
"typeVersion": 2,
"parameters": {
"httpMethod": "POST",
"path": "my-helpdesk",
"responseMode": "responseNode",
"options": {}
},
"webhookId": "de518e93-ed19-541f-a6fc-687a4efaf1b2",
"position": [
0,
300
],
"id": "943597e2-d5eb-5f3c-b36b-f18ee54db8d7"
},
{
"name": "Has question?",
"type": "n8n-nodes-base.if",
"typeVersion": 2.2,
"parameters": {
"conditions": {
"options": {
"caseSensitive": true,
"leftValue": "",
"typeValidation": "loose",
"version": 2
},
"conditions": [
{
"id": "c1",
"leftValue": "={{ $json.body.question }}",
"rightValue": "",
"operator": {
"type": "string",
"operation": "notEmpty",
"singleValue": true
}
}
],
"combinator": "and"
},
"options": {}
},
"position": [
220,
300
],
"id": "ca5c79c8-323b-5eac-b1c7-50d7383f1fc5"
},
{
"name": "Reject empty",
"type": "n8n-nodes-base.respondToWebhook",
"typeVersion": 1.1,
"parameters": {
"respondWith": "json",
"responseBody": "{ \"error\": \"question is required\" }",
"options": {
"responseCode": 400
}
},
"position": [
440,
560
],
"id": "030b2d85-73de-567f-95ce-d25c8729794d"
},
{
"name": "Start clock",
"type": "n8n-nodes-base.code",
"typeVersion": 2,
"parameters": {
"jsCode": "return [{ json: { t: Date.now() } }];"
},
"position": [
440,
300
],
"id": "2240260c-639c-501a-9347-9da083549304"
},
{
"name": "Search FAQ",
"type": "n8n-nodes-base.httpRequest",
"typeVersion": 4.2,
"parameters": {
"url": "http://data-api:8800/faq",
"options": {},
"sendQuery": true,
"queryParameters": {
"parameters": [
{
"name": "q",
"value": "={{ $('Question webhook').first().json.body.question }}"
}
]
}
},
"position": [
660,
300
],
"id": "aabca858-7174-5c55-b7f5-ae3ab4e6a565"
},
{
"name": "Get ticket",
"type": "n8n-nodes-base.httpRequest",
"typeVersion": 4.2,
"parameters": {
"url": "=http://data-api:8800/tickets/{{ (($('Question webhook').first().json.body.question.match(/T-?\\d{4}/i) || ['NONE'])[0]).toUpperCase().replace(/^T(\\d)/, 'T-$1') }}",
"options": {
"response": {
"response": {
"neverError": true
}
}
},
"sendQuery": true,
"queryParameters": {
"parameters": [
{
"name": "requester",
"value": "={{ $('Question webhook').first().json.body.user ?? '' }}"
}
]
}
},
"position": [
880,
300
],
"id": "92beb818-7b68-528c-9d35-f1c1645ea215"
},
{
"name": "After data",
"type": "n8n-nodes-base.code",
"typeVersion": 2,
"parameters": {
"jsCode": "return [{ json: { ...$json, t: Date.now() } }];"
},
"position": [
1100,
300
],
"id": "dbf68168-4cb7-55db-8ba9-9752ff11f684"
},
{
"name": "Rule classify",
"type": "n8n-nodes-base.code",
"typeVersion": 2,
"parameters": {
"jsCode": "const question = String($('Question webhook').first().json.body.question ?? '');\nconst results = $('Search FAQ').first().json.results ?? [];\nlet category = 'unknown';\nif (/T-?\\d{4}/i.test(question)) category = 'ticket';\nelse if (results.length > 0) category = 'faq';\nreturn [{ json: { category, by: 'rule' } }];"
},
"position": [
1320,
300
],
"id": "36d285f0-4fb3-5697-9053-5ae5e3e8d0b1"
},
{
"name": "Known?",
"type": "n8n-nodes-base.if",
"typeVersion": 2.2,
"parameters": {
"conditions": {
"options": {
"caseSensitive": true,
"leftValue": "",
"typeValidation": "loose",
"version": 2
},
"conditions": [
{
"id": "c1",
"leftValue": "={{ $json.category }}",
"rightValue": "unknown",
"operator": {
"type": "string",
"operation": "notEquals"
}
}
],
"combinator": "and"
},
"options": {}
},
"position": [
1540,
300
],
"id": "fd83a3d5-bc74-5739-8185-1924a7939ed8"
},
{
"name": "Classify",
"type": "@n8n/n8n-nodes-langchain.agent",
"typeVersion": 3.1,
"parameters": {
"promptType": "define",
"text": "={{ $('Question webhook').first().json.body.question }}",
"options": {
"systemMessage": "You sort one company IT help-desk question. Categories: faq (how to fix or use something: password, account lock, VPN, printer, mail box, software install), ticket (asks about the status of an IT request ticket like T-1002), other (anything else). Return only JSON, no code fence: {\"category\": \"faq\"}",
"maxIterations": 1
}
},
"position": [
1760,
300
],
"id": "63d9e328-246e-5bd4-9596-40e9b9715464"
},
{
"name": "Classify model",
"type": "@n8n/n8n-nodes-langchain.lmChatOpenAi",
"typeVersion": 1.2,
"parameters": {
"model": {
"__rl": true,
"mode": "id",
"value": "gpt-4.1-mini"
},
"options": {
"temperature": 0
}
},
"credentials": {
"openAiApi": {
"id": "openAiCourse0001",
"name": "OpenAI (.env)"
}
},
"position": [
1760,
520
],
"id": "8aabd2dc-204a-5730-9633-1bd0858969ba"
},
{
"name": "Parse category",
"type": "n8n-nodes-base.code",
"typeVersion": 2,
"parameters": {
"jsCode": "const raw = String($json.output ?? '').trim().replace(/^```(json)?\\s*|```$/g, '');\nlet category = 'other';\ntry { category = JSON.parse(raw).category ?? 'other'; } catch (error) { category = 'other'; }\nif (!['faq', 'ticket', 'other'].includes(category)) category = 'other';\nreturn [{ json: { category, by: 'llm' } }];"
},
"position": [
1980,
300
],
"id": "1150b73c-a088-5d4f-ac61-38faec69bc23"
},
{
"name": "After classify",
"type": "n8n-nodes-base.code",
"typeVersion": 2,
"parameters": {
"jsCode": "return [{ json: { ...$json, t: Date.now() } }];"
},
"position": [
2200,
300
],
"id": "337a90fe-b0bf-5e29-82ec-c1178ec1eeec"
},
{
"name": "Answer",
"type": "@n8n/n8n-nodes-langchain.agent",
"typeVersion": 3.1,
"parameters": {
"promptType": "define",
"text": "=질문: {{ $('Question webhook').first().json.body.question }}\n분류: {{ $json.category }}\nFAQ: {{ JSON.stringify($('Search FAQ').first().json.results ?? []) }}\n접수 건: {{ JSON.stringify($('Get ticket').first().json) }}",
"options": {
"systemMessage": "You are the company IT help desk. Answer in Korean in at most 3 sentences, using only the FAQ entries and the ticket record given. Never invent steps, dates or names. For a ticket, say its status and note. If the data does not answer the question, say \"찾지 못했습니다\" and that a staff member will help.",
"maxIterations": 1
}
},
"position": [
2420,
300
],
"id": "e23b0a82-1cb0-50e9-bf9c-ea5eb3b053f9"
},
{
"name": "Answer model",
"type": "@n8n/n8n-nodes-langchain.lmChatOpenAi",
"typeVersion": 1.2,
"parameters": {
"model": {
"__rl": true,
"mode": "id",
"value": "gpt-4.1-mini"
},
"options": {
"temperature": 0
}
},
"credentials": {
"openAiApi": {
"id": "openAiCourse0001",
"name": "OpenAI (.env)"
}
},
"position": [
2420,
520
],
"id": "ce2907bb-2524-54e7-9e0a-92bed701764f"
},
{
"name": "After answer",
"type": "n8n-nodes-base.code",
"typeVersion": 2,
"parameters": {
"jsCode": "return [{ json: { ...$json, t: Date.now() } }];"
},
"position": [
2640,
300
],
"id": "a0321f1e-05f2-5e4f-b7cf-f0eb06eaf0f1"
},
{
"name": "Review",
"type": "@n8n/n8n-nodes-langchain.agent",
"typeVersion": 3.1,
"parameters": {
"promptType": "define",
"text": "=초안: {{ $('Answer').first().json.output }}",
"options": {
"systemMessage": "You review a Korean IT help-desk answer before it is sent. Keep the facts exactly. Make it polite (합니다체), remove anything not supported by the data, keep at most 3 sentences. Return only the final answer text.",
"maxIterations": 1
}
},
"position": [
2860,
300
],
"id": "5ee9442d-00be-5492-83bb-a99147e6e282"
},
{
"name": "Review model",
"type": "@n8n/n8n-nodes-langchain.lmChatOpenAi",
"typeVersion": 1.2,
"parameters": {
"model": {
"__rl": true,
"mode": "id",
"value": "gpt-4.1-mini"
},
"options": {
"temperature": 0
}
},
"credentials": {
"openAiApi": {
"id": "openAiCourse0001",
"name": "OpenAI (.env)"
}
},
"position": [
2860,
520
],
"id": "b496eea1-f048-550c-9893-515dcc94c84e"
},
{
"name": "After review",
"type": "n8n-nodes-base.code",
"typeVersion": 2,
"parameters": {
"jsCode": "return [{ json: { ...$json, t: Date.now() } }];"
},
"position": [
3080,
300
],
"id": "c955c14a-8a9b-538f-94db-27d3fd579751"
},
{
"name": "Build result",
"type": "n8n-nodes-base.code",
"typeVersion": 2,
"parameters": {
"jsCode": "const ran = (name) => { try { return $(name).isExecuted; } catch (error) { return false; } };\nconst body = $('Question webhook').first().json.body;\nconst category = $('Parse category').isExecuted ? $('Parse category').first().json.category : $('Rule classify').first().json.category;\nconst answer = String($('Review').first().json.output ?? '').trim();\nconst results = $('Search FAQ').first().json.results ?? [];\nconst sources = category === 'faq' ? results.map((r) => r.id) : [];\nconst steps = [];\nif (ran('Rule classify')) steps.push('rule');\nif (ran('Classify')) steps.push('classify');\nsteps.push('faq', 'ticket', 'answer');\nsteps.push('review');\nconst llm_calls = (ran('Classify') ? 1 : 0) + 1 + 1;\nconst result = { route: '자동 답변', category, answer, sources };\nconst t = (name) => (ran(name) ? $(name).first().json.t : null);\nconst t0 = t('Start clock');\nconst marks = [['data', t('After data')], ['classify', t('After classify')], ['answer', t('After answer')], ['review', t('After review')]];\nconst timings = {};\nlet last = t0;\nfor (const [label, mark] of marks) {\n if (mark === null) continue;\n timings[`${label}_ms`] = mark - last;\n last = mark;\n}\ntimings.total_ms = Date.now() - t0;\nObject.assign(result, { llm_calls, cached: false, steps, timings });\nreturn [{ json: result }];"
},
"position": [
3300,
300
],
"id": "185dc7f9-4954-5cef-ba24-f45145bd192a"
},
{
"name": "Send result",
"type": "n8n-nodes-base.respondToWebhook",
"typeVersion": 1.1,
"parameters": {
"respondWith": "json",
"responseBody": "={{ $json }}",
"options": {}
},
"position": [
3520,
300
],
"id": "4dd5ed77-a95a-5969-a9f7-78ab7d32fb21"
}
],
"connections": {
"Question webhook": {
"main": [
[
{
"node": "Has question?",
"type": "main",
"index": 0
}
]
]
},
"Has question?": {
"main": [
[
{
"node": "Start clock",
"type": "main",
"index": 0
}
],
[
{
"node": "Reject empty",
"type": "main",
"index": 0
}
]
]
},
"Start clock": {
"main": [
[
{
"node": "Search FAQ",
"type": "main",
"index": 0
}
]
]
},
"Search FAQ": {
"main": [
[
{
"node": "Get ticket",
"type": "main",
"index": 0
}
]
]
},
"Get ticket": {
"main": [
[
{
"node": "After data",
"type": "main",
"index": 0
}
]
]
},
"After data": {
"main": [
[
{
"node": "Rule classify",
"type": "main",
"index": 0
}
]
]
},
"Rule classify": {
"main": [
[
{
"node": "Known?",
"type": "main",
"index": 0
}
]
]
},
"Known?": {
"main": [
[
{
"node": "Answer",
"type": "main",
"index": 0
}
],
[
{
"node": "Classify",
"type": "main",
"index": 0
}
]
]
},
"Classify model": {
"ai_languageModel": [
[
{
"node": "Classify",
"type": "ai_languageModel",
"index": 0
}
]
]
},
"Classify": {
"main": [
[
{
"node": "Parse category",
"type": "main",
"index": 0
}
]
]
},
"Parse category": {
"main": [
[
{
"node": "After classify",
"type": "main",
"index": 0
}
]
]
},
"After classify": {
"main": [
[
{
"node": "Answer",
"type": "main",
"index": 0
}
]
]
},
"Answer model": {
"ai_languageModel": [
[
{
"node": "Answer",
"type": "ai_languageModel",
"index": 0
}
]
]
},
"Answer": {
"main": [
[
{
"node": "After answer",
"type": "main",
"index": 0
}
]
]
},
"After answer": {
"main": [
[
{
"node": "Review",
"type": "main",
"index": 0
}
]
]
},
"Review model": {
"ai_languageModel": [
[
{
"node": "Review",
"type": "ai_languageModel",
"index": 0
}
]
]
},
"Review": {
"main": [
[
{
"node": "After review",
"type": "main",
"index": 0
}
]
]
},
"After review": {
"main": [
[
{
"node": "Build result",
"type": "main",
"index": 0
}
]
]
},
"Build result": {
"main": [
[
{
"node": "Send result",
"type": "main",
"index": 0
}
]
]
}
},
"settings": {
"executionOrder": "v1"
}
}