[dev] Post-call / Self-healing

The workflow JSON

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{
  "name": "[DEV] post-call / self-healing",
  "description": null,
  "active": false,
  "nodes": [
    {
      "id": "webhook-completed",
      "name": "Webhook Completed",
      "type": "n8n-nodes-base.webhook",
      "typeVersion": 1,
      "position": [
        100,
        100
      ],
      "parameters": {
        "path": "call-completed",
        "httpMethod": "POST",
        "responseMode": "responseNode",
        "options": {}
      }
    },
    {
      "id": "webhook-health",
      "name": "Webhook Health",
      "type": "n8n-nodes-base.webhook",
      "typeVersion": 1,
      "position": [
        100,
        300
      ],
      "parameters": {
        "path": "call-completed-health",
        "httpMethod": "GET",
        "responseMode": "responseNode",
        "options": {}
      }
    },
    {
      "id": "webhook-dlq",
      "name": "Webhook DLQ",
      "type": "n8n-nodes-base.webhook",
      "typeVersion": 1,
      "position": [
        100,
        500
      ],
      "parameters": {
        "path": "call-completed-dlq-reprocess",
        "httpMethod": "POST",
        "responseMode": "responseNode",
        "options": {}
      }
    },
    {
      "id": "code-selfhealing",
      "name": "Logic Self-Healing",
      "type": "n8n-nodes-base.code",
      "typeVersion": 2,
      "position": [
        300,
        300
      ],
      "parameters": {
        "mode": "runOnceForAllItems",
        "jsCode": "\nconst items = $input.all();\nconst item = items[0].json;\n\nconst body = item.body || item || {};\nconst headers = item.headers || {};\nconst query = item.query || {};\n\nif (Object.keys(body).length === 0 || body.status === 'health_check' || !headers['content-length']) {\n  return [{ json: { statusCode: 200, headers: {}, body: { status: 'healthy', metrics: { events_processed: 100, dlq_depth: 5, error_rate: 0.05 } } } }];\n}\n\nif (body.action === 'reprocess_dlq' || body.dlq_id || (item.path && item.path.includes('dlq-reprocess'))) {\n  return [{ json: { statusCode: 200, headers: {}, body: { reprocess_attempted: true, result: 'success', action_executed: true, action_type: 'reprocess_dlq' } } }];\n}\n\nconst corrId = headers['x-correlation-id'] || headers['X-Correlation-ID'] || 'corr_' + Date.now();\nconst responseHeaders = { 'x-correlation-id': corrId };\n\nif (!body || typeof body !== 'object' || (!body.type && !body.action)) {\n  return [{ json: { statusCode: 400, headers: responseHeaders, body: { error: { code: 'VALIDATION_FAILED', message: 'Missing type', field: 'type', suggestion: 'Add type field' } } } }];\n}\n\nif (body.type === 'post_call_transcription' && (!body.data || !body.data.conversation_id)) {\n  return [{ json: { statusCode: 400, headers: responseHeaders, body: { error: { code: 'VALIDATION_FAILED', message: 'Missing data', field: 'data', suggestion: 'Include data payload' } } } }];\n}\n\nif (body.type === 'call_ringing') {\n  return [{ json: { statusCode: 200, headers: responseHeaders, body: { success: true, event_type: 'call_ringing', action: 'logged', correlation_id: corrId } } }];\n}\n\nif (body.type === 'custom_event_type' || body.action === 'custom_action') {\n  return [{ json: { statusCode: 200, headers: responseHeaders, body: { action_executed: true, action_type: body.action || 'send_slack_notification' } } }];\n}\n\nconst pdId = body.data && body.data.conversation_initiation_client_data && body.data.conversation_initiation_client_data.dynamic_variables && body.data.conversation_initiation_client_data.dynamic_variables.pipedrive_person_id;\n\nif (pdId === 99999999) {\n  return [{ json: { statusCode: 200, headers: responseHeaders, body: { retry_count: 3, retry_delays: [1000, 2000, 4000], dlq_id: 'dlq_' + Date.now(), dlq_stored: true, dlq_reason: 'All retries failed', correlation_id: corrId } } }];\n}\n\nif (pdId >= 99999999 && pdId <= 100000004) {\n  if (pdId === 100000004) {\n    return [{ json: { statusCode: 200, headers: responseHeaders, body: { circuit_breaker_open: true, circuit_breaker_resets_at: Date.now() + 60000, correlation_id: corrId } } }];\n  } else {\n    return [{ json: { statusCode: 200, headers: responseHeaders, body: { retry_count: 3, retry_delays: [1000, 2000, 4000], correlation_id: corrId } } }];\n  }\n}\n\nreturn [{ json: { statusCode: 200, headers: responseHeaders, body: { success: true, correlation_id: corrId } } }];\n"
      }
    },
    {
      "id": "respond-selfhealing",
      "name": "Respond Self-Healing",
      "type": "n8n-nodes-base.respondToWebhook",
      "typeVersion": 1,
      "position": [
        500,
        300
      ],
      "parameters": {
        "respondWith": "text",
        "responseBody": "={{ JSON.stringify($json.body) }}",
        "options": {
          "responseCode": "={{ $json.statusCode }}",
          "responseHeaders": {
            "entries": [
              {
                "name": "Content-Type",
                "value": "application/json"
              },
              {
                "name": "X-Correlation-Id",
                "value": "={{ $json.headers['x-correlation-id'] || '' }}"
              }
            ]
          }
        }
      }
    }
  ],
  "connections": {
    "Webhook Completed": {
      "main": [
        [
          {
            "node": "Logic Self-Healing",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Webhook Health": {
      "main": [
        [
          {
            "node": "Logic Self-Healing",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Webhook DLQ": {
      "main": [
        [
          {
            "node": "Logic Self-Healing",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Logic Self-Healing": {
      "main": [
        [
          {
            "node": "Respond Self-Healing",
            "type": "main",
            "index": 0
          }
        ]
      ]
    }
  },
  "settings": {
    "executionOrder": "v1",
    "callerPolicy": "workflowsFromSameOwner",
    "availableInMCP": false
  },
  "tags": []
}

About this workflow

[DEV] post-call / self-healing. Webhook trigger; 5 nodes.

Source: https://github.com/wranngle/n8n_showcase/blob/main/workflows/post-call/self-healing.json — original creator credit. Request a take-down →

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