Webhook Ticket Triage Workflow with Schema Guard & Dead-Letter Fallback (n8n-webhook-triage-guard.json)

{
  "name": "Tinker AI — Webhook Ticket Triage with Schema Guard",
  "nodes": [
    {
      "parameters": {
        "httpMethod": "POST",
        "path": "tinker-ticket-triage",
        "responseMode": "lastNode"
      },
      "name": "Inbound Ticket Webhook",
      "type": "n8n-nodes-base.webhook",
      "typeVersion": 2,
      "position": [200, 280]
    },
    {
      "parameters": {
        "method": "POST",
        "url": "http://host.docker.internal:11434/v1/chat/completions",
        "sendBody": true,
        "specifyBody": "json",
        "jsonBody": "={{ JSON.stringify({ model: 'qwen2.5:7b', temperature: 0, max_tokens: 256, response_format: { type: 'json_object' }, messages: [{ role: 'system', content: 'Return JSON with keys: urgency (low|medium|high), department (billing|tech|general), reason (string).' }, { role: 'user', content: String($json.body?.message || '').slice(0, 2000) }] }) }}",
        "options": { "timeout": 30000 }
      },
      "name": "Structured Triage LLM",
      "type": "n8n-nodes-base.httpRequest",
      "typeVersion": 4.2,
      "retryOnFail": true,
      "maxTries": 2,
      "continueOnFail": true,
      "position": [460, 280]
    }
  ],
  "connections": {
    "Inbound Ticket Webhook": {
      "main": [[{ "node": "Structured Triage LLM", "type": "main", "index": 0 }]]
    }
  }
}