Loan Approval with Verifiable Decision Receipts

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": "Loan Approval with Verifiable Decision Receipts",
  "nodes": [
    {
      "parameters": {
        "httpMethod": "POST",
        "path": "loan-approval",
        "options": {},
        "responseMode": "responseNode"
      },
      "id": "733c286f-872b-4a96-b8b5-da8e4dc94e65",
      "name": "Loan Approval",
      "type": "n8n-nodes-base.webhook",
      "typeVersion": 2.1,
      "position": [
        0,
        300
      ]
    },
    {
      "parameters": {
        "modelId": {
          "__rl": true,
          "mode": "list",
          "value": "gpt-4o",
          "cachedResultName": "GPT-4O"
        },
        "messages": {
          "values": [
            {
              "role": "system",
              "content": "=You are a loan underwriting AI. Decide APPROVE or REJECT with reasons. JSON: {\"decision\":\"APPROVE|REJECT\",\"reason\":\"...\",\"amount\":0}."
            },
            {
              "content": "=Return JSON only.\n\nInput:\n{{ JSON.stringify($json.body) }}"
            }
          ]
        },
        "jsonOutput": true,
        "options": {}
      },
      "id": "1d71a5b0-38f3-456d-b70d-2badda120b03",
      "name": "AI Decision",
      "type": "@n8n/n8n-nodes-langchain.openAi",
      "typeVersion": 2.1,
      "position": [
        220,
        300
      ],
      "credentials": {
        "openAiApi": {
          "name": "<your credential>"
        }
      }
    },
    {
      "parameters": {
        "operation": "generateReceipt",
        "agentName": "LoanUnderwritingAgent",
        "workflowName": "={{ $workflow.name }}",
        "action": "={{ 'AI decision: ' + ($json.message.content.decision || $json.message.content.recommendation || 'completed') }}",
        "decision": "={{ JSON.stringify($json.message.content) }}",
        "additionalFields": {
          "modelProvider": "openai",
          "modelUsed": "gpt-4o",
          "decisionType": "loan_decision",
          "riskLevel": "high",
          "humanReview": true,
          "policies": "eu-ai-act-high-risk, fair-lending-ecoa",
          "permissions": "credit.decide",
          "tags": "finance, loan, lending"
        }
      },
      "id": "1be73bd5-549f-4411-ada3-67aab57bbafd",
      "name": "Signatrust: Receipt",
      "type": "n8n-nodes-signatrust.signatrust",
      "typeVersion": 1,
      "position": [
        440,
        300
      ],
      "credentials": {
        "signatrustApi": {
          "name": "<your credential>"
        }
      }
    },
    {
      "parameters": {
        "respondWith": "json",
        "responseBody": "={{ { status:\"OK\", receipt_id:$json.id, decision:$('AI Decision').item.json.message.content } }}",
        "options": {}
      },
      "id": "c3940436-8377-4341-adaa-6624dac2be98",
      "name": "Respond",
      "type": "n8n-nodes-base.respondToWebhook",
      "typeVersion": 1.1,
      "position": [
        660,
        300
      ]
    },
    {
      "parameters": {
        "content": "## Loan Approval with Verifiable Decision Receipts\n**Why Signatrust?** Every AI decision here becomes a tamper-evident, Ed25519-signed receipt \u2014 verifiable for audits and disputes.",
        "height": 170,
        "width": 420,
        "color": 5
      },
      "id": "6e3ee3ef-39ca-4d54-8469-48d12710e43f",
      "name": "Sticky Note f31439",
      "type": "n8n-nodes-base.stickyNote",
      "typeVersion": 1,
      "position": [
        -40,
        40
      ]
    }
  ],
  "connections": {
    "Loan Approval": {
      "main": [
        [
          {
            "node": "AI Decision",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "AI Decision": {
      "main": [
        [
          {
            "node": "Signatrust: Receipt",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Signatrust: Receipt": {
      "main": [
        [
          {
            "node": "Respond",
            "type": "main",
            "index": 0
          }
        ]
      ]
    }
  },
  "active": false,
  "settings": {
    "executionOrder": "v1"
  },
  "tags": [
    {
      "name": "Loan Approval \u2014 finance"
    },
    {
      "name": "Loan Approval \u2014 loan"
    },
    {
      "name": "Loan Approval \u2014 lending"
    },
    {
      "name": "Signatrust (7)"
    }
  ],
  "meta": {
    "templateCredsSetupCompleted": false
  },
  "versionId": "a13f60b0-5e72-41f6-ada0-f463573ccb97"
}

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.

• openAiApi
• signatrustApi

About this workflow

Loan Approval with Verifiable Decision Receipts. Uses openAi, n8n-nodes-signatrust. Webhook trigger; 5 nodes.

Source: https://github.com/abokenan444/n8n-signatrust-workflows/blob/main/workflows/07-loan-approval.json — original creator credit. Request a take-down →

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