Document Classification 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": "Document Classification with Verifiable Decision Receipts",
  "nodes": [
    {
      "parameters": {
        "httpMethod": "POST",
        "path": "doc-classification",
        "options": {},
        "responseMode": "responseNode"
      },
      "id": "a09c0a1f-84c5-400c-9cd8-f3f3190c4640",
      "name": "Document Classification",
      "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 document classification AI. Return JSON: {\"class\":\"...\",\"sensitivity\":\"PUBLIC|INTERNAL|CONFIDENTIAL\",\"reason\":\"...\"}."
            },
            {
              "content": "=Return JSON only.\n\nInput:\n{{ JSON.stringify($json.body) }}"
            }
          ]
        },
        "jsonOutput": true,
        "options": {}
      },
      "id": "ac9c309e-6093-4885-8088-d860ff28fc78",
      "name": "AI Decision",
      "type": "@n8n/n8n-nodes-langchain.openAi",
      "typeVersion": 2.1,
      "position": [
        220,
        300
      ],
      "credentials": {
        "openAiApi": {
          "name": "<your credential>"
        }
      }
    },
    {
      "parameters": {
        "operation": "generateReceipt",
        "agentName": "DocClassifierAgent",
        "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": "document_classification",
          "riskLevel": "medium",
          "humanReview": false,
          "policies": "data-classification-v2",
          "permissions": "document.classify",
          "tags": "ops, dlp, governance"
        }
      },
      "id": "ae62bf4b-23e2-4786-854f-e8f87144ec86",
      "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": "e0c26ee1-210b-408d-9ce5-cca9904c6394",
      "name": "Respond",
      "type": "n8n-nodes-base.respondToWebhook",
      "typeVersion": 1.1,
      "position": [
        660,
        300
      ]
    },
    {
      "parameters": {
        "content": "## Document Classification 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": "2807a376-1808-4fc4-95df-bb765758cb9a",
      "name": "Sticky Note eeaf5f",
      "type": "n8n-nodes-base.stickyNote",
      "typeVersion": 1,
      "position": [
        -40,
        40
      ]
    }
  ],
  "connections": {
    "Document Classification": {
      "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": "Document Classification \u2014 ops"
    },
    {
      "name": "Document Classification \u2014 dlp"
    },
    {
      "name": "Document Classification \u2014 governance"
    },
    {
      "name": "Signatrust (18)"
    }
  ],
  "meta": {
    "templateCredsSetupCompleted": false
  },
  "versionId": "861c3c92-6f99-45fd-8462-4b8ddc0e8678"
}

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

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

Source: https://github.com/abokenan444/n8n-signatrust-workflows/blob/main/workflows/18-document-classification.json — original creator credit. Request a take-down →

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