Content Moderation 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": "Content Moderation with Verifiable Decision Receipts",
  "nodes": [
    {
      "parameters": {
        "httpMethod": "POST",
        "path": "content-moderation",
        "options": {},
        "responseMode": "responseNode"
      },
      "id": "0d060095-0888-42a6-8fca-9fa019e6f1e4",
      "name": "Content Moderation",
      "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 content moderation AI. Return JSON: {\"decision\":\"ALLOW|REMOVE|FLAG\",\"category\":\"...\",\"reason\":\"...\"}."
            },
            {
              "content": "=Return JSON only.\n\nInput:\n{{ JSON.stringify($json.body) }}"
            }
          ]
        },
        "jsonOutput": true,
        "options": {}
      },
      "id": "e77f8361-81f1-43f5-b599-625b644c364f",
      "name": "AI Decision",
      "type": "@n8n/n8n-nodes-langchain.openAi",
      "typeVersion": 2.1,
      "position": [
        220,
        300
      ],
      "credentials": {
        "openAiApi": {
          "name": "<your credential>"
        }
      }
    },
    {
      "parameters": {
        "operation": "generateReceipt",
        "agentName": "ModerationAgent",
        "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": "content_moderation",
          "riskLevel": "medium",
          "humanReview": false,
          "policies": "community-guidelines-v4, dsa-compliance",
          "permissions": "content.moderate",
          "tags": "moderation, trust-safety, ai"
        }
      },
      "id": "d3564714-6d9c-4825-86ca-c488590accca",
      "name": "Signatrust: Receipt",
      "type": "n8n-nodes-signatrust.signatrust",
      "typeVersion": 1,
      "position": [
        440,
        300
      ],
      "credentials": {
        "signatrustApi": {
          "name": "<your credential>"
        }
      }
    },
    {
      "parameters": {
        "select": "channel",
        "channelId": {
          "__rl": true,
          "mode": "name",
          "value": "#alerts"
        },
        "text": "={{ 'Decision receipt ' + $json.id + ' created' }}",
        "otherOptions": {}
      },
      "id": "4787e6f8-7afc-4c4b-8023-aa8b5804819d",
      "name": "Slack Alert",
      "type": "n8n-nodes-base.slack",
      "typeVersion": 2.3,
      "position": [
        660,
        300
      ],
      "credentials": {
        "slackApi": {
          "name": "<your credential>"
        }
      }
    },
    {
      "parameters": {
        "content": "## Content Moderation 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": "adb3fcf0-383a-48a2-be20-bb2abfafe8be",
      "name": "Sticky Note 386bf3",
      "type": "n8n-nodes-base.stickyNote",
      "typeVersion": 1,
      "position": [
        -40,
        40
      ]
    }
  ],
  "connections": {
    "Content Moderation": {
      "main": [
        [
          {
            "node": "AI Decision",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "AI Decision": {
      "main": [
        [
          {
            "node": "Signatrust: Receipt",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Signatrust: Receipt": {
      "main": [
        [
          {
            "node": "Slack Alert",
            "type": "main",
            "index": 0
          }
        ]
      ]
    }
  },
  "active": false,
  "settings": {
    "executionOrder": "v1"
  },
  "tags": [
    {
      "name": "Content Moderation \u2014 moderation"
    },
    {
      "name": "Content Moderation \u2014 trust-safety"
    },
    {
      "name": "Content Moderation \u2014 ai"
    },
    {
      "name": "Signatrust (13)"
    }
  ],
  "meta": {
    "templateCredsSetupCompleted": false
  },
  "versionId": "a56c024e-e9ee-4ad5-9c03-1f4451b85ad3"
}

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
• slackApi

About this workflow

Content Moderation with Verifiable Decision Receipts. Uses openAi, n8n-nodes-signatrust, slack. Webhook trigger; 5 nodes.

Source: https://github.com/abokenan444/n8n-signatrust-workflows/blob/main/workflows/13-content-moderation.json — original creator credit. Request a take-down →

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