Collect Feedback via Postgres and HTTP Requests

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": "Feedback Collection and Training Data",
  "nodes": [
    {
      "parameters": {},
      "id": "p6q7r8s9-t0u1-2345-pqrs-654234567805",
      "name": "Execute Workflow Trigger",
      "type": "n8n-nodes-base.executeWorkflowTrigger",
      "typeVersion": 1,
      "position": [
        240,
        300
      ]
    },
    {
      "parameters": {
        "operation": "select",
        "schema": {
          "__rl": true,
          "value": "public",
          "mode": "list"
        },
        "table": {
          "__rl": true,
          "value": "voice_interactions",
          "mode": "list"
        },
        "where": {
          "conditions": [
            {
              "column": "interaction_id",
              "condition": "equal",
              "value": "={{ $json.interactionId }}"
            }
          ]
        }
      },
      "id": "q7r8s9t0-u1v2-3456-qrst-765234567806",
      "name": "Get Interaction Data",
      "type": "n8n-nodes-base.postgres",
      "typeVersion": 2.5,
      "position": [
        460,
        300
      ],
      "credentials": {
        "postgres": {
          "name": "<your credential>"
        }
      }
    },
    {
      "parameters": {
        "url": "{{ $vars.FEEDBACK_WEBHOOK_URL }}",
        "sendBody": true,
        "bodyContentType": "json",
        "jsonBody": "={\n  \"interactionId\": \"{{ $json.interaction_id }}\",\n  \"userInput\": \"{{ $json.user_input }}\",\n  \"aiResponse\": \"{{ $json.ai_response }}\",\n  \"feedbackForm\": {\n    \"rating\": null,\n    \"correctedTranscription\": null,\n    \"correctedResponse\": null,\n    \"comments\": null\n  },\n  \"submissionUrl\": \"{{ $vars.N8N_WEBHOOK_URL }}/webhook/feedback-submit\"\n}"
      },
      "id": "r8s9t0u1-v2w3-4567-rstu-876234567807",
      "name": "Send Feedback Request",
      "type": "n8n-nodes-base.httpRequest",
      "typeVersion": 4.2,
      "position": [
        680,
        300
      ]
    },
    {
      "parameters": {
        "operation": "insert",
        "schema": {
          "__rl": true,
          "value": "public",
          "mode": "list"
        },
        "table": {
          "__rl": true,
          "value": "training_feedback",
          "mode": "list"
        },
        "columns": {
          "mappingMode": "defineBelow",
          "value": {
            "interaction_id": "={{ $json.interaction_id }}",
            "feedback_requested_at": "={{ new Date().toISOString() }}",
            "status": "pending"
          }
        }
      },
      "id": "s9t0u1v2-w3x4-5678-stuv-987234567808",
      "name": "Log Feedback Request",
      "type": "n8n-nodes-base.postgres",
      "typeVersion": 2.5,
      "position": [
        900,
        300
      ],
      "credentials": {
        "postgres": {
          "name": "<your credential>"
        }
      }
    }
  ],
  "connections": {
    "Execute Workflow Trigger": {
      "main": [
        [
          {
            "node": "Get Interaction Data",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Get Interaction Data": {
      "main": [
        [
          {
            "node": "Send Feedback Request",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Send Feedback Request": {
      "main": [
        [
          {
            "node": "Log Feedback Request",
            "type": "main",
            "index": 0
          }
        ]
      ]
    }
  },
  "settings": {
    "executionOrder": "v1"
  },
  "staticData": null,
  "tags": [],
  "triggerCount": 1,
  "updatedAt": "2025-06-25T00:00:00.000Z",
  "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.

• postgres

About this workflow

Feedback Collection and Training Data. Uses executeWorkflowTrigger, postgres, httpRequest. Event-driven trigger; 4 nodes.

Source: https://github.com/161sam/n8n-voice-ai/blob/main/workflows/Feedback-Collection.json — original creator credit. Request a take-down →

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