{
  "name": "Safe support agent",
  "nodes": [
    {
      "id": "webhook",
      "name": "Authenticated Webhook",
      "type": "n8n-nodes-base.webhook",
      "parameters": { "authentication": "headerAuth", "path": "support" },
      "credentials": { "httpHeaderAuth": { "id": "credential-reference", "name": "Webhook Header Auth" } }
    },
    {
      "id": "dedupe",
      "name": "Claim idempotency event",
      "type": "n8n-nodes-base.postgres",
      "onError": "continueErrorOutput",
      "parameters": {
        "operation": "executeQuery",
        "query": "INSERT INTO event_ledger (event_id) VALUES ($1) ON CONFLICT (event_id) DO NOTHING RETURNING event_id",
        "queryReplacement": "={{ $json.event_id }}"
      },
      "credentials": { "postgres": { "id": "credential-reference", "name": "Event Ledger" } }
    },
    {
      "id": "ledger-failure",
      "name": "Ledger failure stop",
      "type": "n8n-nodes-base.noOp",
      "parameters": {}
    },
    {
      "id": "enabled",
      "name": "Agent enabled kill switch",
      "type": "n8n-nodes-base.if",
      "parameters": { "conditions": { "boolean": [{ "value1": "={{ $json.agent_enabled }}", "value2": true }] } }
    },
    {
      "id": "agent",
      "name": "AI Agent",
      "type": "@n8n/n8n-nodes-langchain.agent",
      "parameters": { "text": "={{ $json.body.message }}" }
    },
    {
      "id": "model",
      "name": "OpenAI Chat Model",
      "type": "@n8n/n8n-nodes-langchain.lmChatOpenAi",
      "parameters": { "modelName": "gpt-4.1-mini" },
      "credentials": { "openAiApi": { "id": "credential-reference", "name": "OpenAI" } }
    },
    {
      "id": "confidence",
      "name": "Confidence gate",
      "type": "n8n-nodes-base.if",
      "parameters": { "conditions": { "number": [{ "value1": "={{ $json.confidence }}", "operation": "smaller", "value2": 0.7 }] } }
    },
    {
      "id": "handoff",
      "name": "Human handoff ticket",
      "type": "n8n-nodes-base.slack",
      "onError": "continueErrorOutput",
      "parameters": { "channel": "support", "text": "={{ $json.summary }}" }
    },
    {
      "id": "handoff-failure",
      "name": "Handoff failure stop",
      "type": "n8n-nodes-base.noOp",
      "parameters": {}
    },
    {
      "id": "failure-alert",
      "name": "Operator error alert",
      "type": "n8n-nodes-base.slack",
      "onError": "continueErrorOutput",
      "parameters": { "channel": "operations", "text": "Failure alert: {{ $json.error.message }}" }
    },
    {
      "id": "response",
      "name": "Respond to Webhook",
      "type": "n8n-nodes-base.respondToWebhook",
      "parameters": { "respondWith": "json", "responseBody": "={{ $json }}" }
    }
  ],
  "connections": {
    "Authenticated Webhook": { "main": [[{ "node": "Claim idempotency event", "type": "main", "index": 0 }]] },
    "Claim idempotency event": {
      "main": [
        [{ "node": "Agent enabled kill switch", "type": "main", "index": 0 }],
        [{ "node": "Operator error alert", "type": "main", "index": 0 }]
      ]
    },
    "Agent enabled kill switch": { "main": [[{ "node": "AI Agent", "type": "main", "index": 0 }], []] },
    "OpenAI Chat Model": { "ai_languageModel": [[{ "node": "AI Agent", "type": "ai_languageModel", "index": 0 }]] },
    "AI Agent": { "main": [[{ "node": "Confidence gate", "type": "main", "index": 0 }]] },
    "Confidence gate": {
      "main": [
        [{ "node": "Human handoff ticket", "type": "main", "index": 0 }],
        [{ "node": "Respond to Webhook", "type": "main", "index": 0 }]
      ]
    },
    "Human handoff ticket": {
      "main": [
        [],
        [{ "node": "Operator error alert", "type": "main", "index": 0 }]
      ]
    },
    "Operator error alert": {
      "main": [
        [],
        [{ "node": "Handoff failure stop", "type": "main", "index": 0 }]
      ]
    }
  },
  "settings": { "executionTimeout": 120 }
}