Ai-powered Zendesk Support Responses with Rag, Openai, and Supabase…

The workflow JSON

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{
  "name": "Zendesk Automation (New Tickets)",
  "nodes": [
    {
      "id": "note-webhook",
      "name": "Note - Webhook Setup",
      "type": "n8n-nodes-base.stickyNote",
      "color": "#FFD700",
      "position": [
        -2480,
        640
      ],
      "parameters": {
        "notes": "\ud83d\udd17 Set this webhook URL as a trigger in your Zendesk account under 'Admin \u2192 Triggers' so that new tickets are forwarded here."
      },
      "typeVersion": 1
    },
    {
      "id": "180aaaa5-75a9-4573-a300-d87159dfb153",
      "name": "Get New Tickets",
      "type": "n8n-nodes-base.webhook",
      "position": [
        -2320,
        784
      ],
      "parameters": {
        "path": "zendesk_new_ticket",
        "options": {},
        "httpMethod": "POST"
      },
      "typeVersion": 2
    },
    {
      "id": "ac8ab31e-3c02-4d48-afd0-4a9736a7aa64",
      "name": "Extract New Ticket",
      "type": "n8n-nodes-base.set",
      "position": [
        -2096,
        784
      ],
      "parameters": {
        "assignments": {
          "assignments": [
            {
              "name": "timestamp",
              "type": "string",
              "value": "={{new Date().toLocaleString(\"en-BD\", { timeZone: \"Asia/Dhaka\", dateStyle: \"medium\", timeStyle: \"short\" })}}"
            },
            {
              "name": "ticket_id",
              "type": "string",
              "value": "={{ $json.body.ticket_id }}"
            },
            {
              "name": "ticket_status",
              "type": "string",
              "value": "={{ $json.body.ticket_status }}"
            },
            {
              "name": "requester_id",
              "type": "string",
              "value": "={{ $json.body.requester_id }}"
            },
            {
              "name": "requester_name",
              "type": "string",
              "value": "={{ $json.body.requester_name }}"
            },
            {
              "name": "requester_email",
              "type": "string",
              "value": "={{ $json.body.requester_email }}"
            },
            {
              "name": "subject",
              "type": "string",
              "value": "={{ $json.body.subject }}"
            },
            {
              "name": "description",
              "type": "string",
              "value": "={{ ($json.body.description || \"\").split('\\n\\n').slice(-1)[0].trim() }}"
            }
          ]
        }
      },
      "typeVersion": 3.4
    },
    {
      "id": "note-supabase",
      "name": "Note - Supabase Setup",
      "type": "n8n-nodes-base.stickyNote",
      "color": "#9ACD32",
      "position": [
        -1728,
        1344
      ],
      "parameters": {
        "notes": "\ud83d\udcda Replace with your own Supabase project credentials. Ensure you have a 'documents' table with embedded KB content."
      },
      "typeVersion": 1
    },
    {
      "id": "0aa2089e-7346-43b6-a702-630c4849b8c9",
      "name": "Supabase Vector Store",
      "type": "@n8n/n8n-nodes-langchain.vectorStoreSupabase",
      "position": [
        -1728,
        1216
      ],
      "parameters": {
        "options": {
          "queryName": "match_documents"
        },
        "tableName": "documents"
      },
      "credentials": {
        "supabaseApi": {
          "name": "<your credential>"
        }
      },
      "typeVersion": 1
    },
    {
      "id": "note-postgres",
      "name": "Note - Postgres Memory",
      "type": "n8n-nodes-base.stickyNote",
      "color": "#FF7F50",
      "position": [
        -1904,
        928
      ],
      "parameters": {
        "notes": "\ud83d\uddc4\ufe0f Create a Postgres table `zendesk_ticket_histories` with fields for session context. This allows AI to recall past ticket interactions."
      },
      "typeVersion": 1
    },
    {
      "id": "c227d629-3e39-4445-b3c3-7c52e6827fdf",
      "name": "Postgres Ticket Memory",
      "type": "@n8n/n8n-nodes-langchain.memoryPostgresChat",
      "position": [
        -1744,
        1008
      ],
      "parameters": {
        "tableName": "zendesk_ticket_histories",
        "sessionKey": "={{ $json.ticket_id }}",
        "sessionIdType": "customKey"
      },
      "credentials": {
        "postgres": {
          "name": "<your credential>"
        }
      },
      "typeVersion": 1
    },
    {
      "id": "note-openai",
      "name": "Note - OpenAI Setup",
      "type": "n8n-nodes-base.stickyNote",
      "color": "#87CEFA",
      "position": [
        -1680,
        1520
      ],
      "parameters": {
        "notes": "\ud83e\udd16 Add your own OpenAI API key in the credential settings. Adjust model if desired (gpt-4o, gpt-4o-mini, etc.)."
      },
      "typeVersion": 1
    },
    {
      "id": "89663ccb-065d-4211-9c26-1770f60984f0",
      "name": "Embeddings OpenAI",
      "type": "@n8n/n8n-nodes-langchain.embeddingsOpenAi",
      "position": [
        -1648,
        1424
      ],
      "parameters": {
        "model": "text-embedding-3-small",
        "options": {
          "dimensions": 1536
        }
      },
      "credentials": {
        "openAiApi": {
          "name": "<your credential>"
        }
      },
      "typeVersion": 1
    },
    {
      "id": "5d009f5e-2a9c-4036-a382-9e5180e677a7",
      "name": "Retrieve Knowledge Base",
      "type": "@n8n/n8n-nodes-langchain.toolVectorStore",
      "position": [
        -1616,
        1008
      ],
      "parameters": {
        "name": "content_en",
        "topK": 5,
        "description": "Contains all KB articles to answer user questions accurately."
      },
      "typeVersion": 1
    },
    {
      "id": "44147a82-2675-4bef-8b54-53fe90646cb0",
      "name": "RAG AI Agent",
      "type": "@n8n/n8n-nodes-langchain.agent",
      "position": [
        -1824,
        784
      ],
      "parameters": {
        "text": "={{ $json.description }}",
        "options": {
          "maxIterations": 2,
          "systemMessage": "=You are a professional support assistant. Use only the retrieved knowledge base documents to answer the customer\u2019s ticket clearly, formally, and concisely."
        },
        "promptType": "define"
      },
      "typeVersion": 1.6
    },
    {
      "id": "510b8014-8a8b-4fde-846f-4dd82554ac74",
      "name": "If No Relevant KB Found",
      "type": "n8n-nodes-base.if",
      "position": [
        -1232,
        784
      ],
      "parameters": {
        "conditions": {
          "conditions": [
            {
              "operator": {
                "type": "string",
                "operation": "contains"
              },
              "leftValue": "={{ $('RAG AI Agent').item.json.output }}",
              "rightValue": "will get back to you shortly"
            }
          ]
        }
      },
      "typeVersion": 2.2
    },
    {
      "id": "note-zendesk",
      "name": "Note - Zendesk Domain",
      "type": "n8n-nodes-base.stickyNote",
      "color": "#FFA07A",
      "position": [
        -896,
        704
      ],
      "parameters": {
        "notes": "\ud83c\udff7\ufe0f Update `<YOUR_ZENDESK_DOMAIN>` with your Zendesk subdomain. Example: `https://mycompany.zendesk.com/...`"
      },
      "typeVersion": 1
    },
    {
      "id": "e99c3f1f-cc58-4638-8ddd-65df1998197c",
      "name": "Add Tags (ai_reply)",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
        -784,
        880
      ],
      "parameters": {
        "url": "=https://<YOUR_ZENDESK_DOMAIN>/api/v2/tickets/{{ $('Extract New Ticket').first().json.ticket_id }}/tags.json",
        "method": "PUT",
        "jsonBody": "{ \"tags\": [\"ai_reply\"] }",
        "sendBody": true,
        "specifyBody": "json",
        "authentication": "predefinedCredentialType",
        "nodeCredentialType": "zendeskApi"
      },
      "credentials": {
        "zendeskApi": {
          "name": "<your credential>"
        }
      },
      "typeVersion": 4.2
    },
    {
      "id": "note-test",
      "name": "Note - Testing",
      "type": "n8n-nodes-base.stickyNote",
      "color": "#BA55D3",
      "position": [
        -720,
        1200
      ],
      "parameters": {
        "notes": "\u2705 After setup, create a sample ticket in Zendesk to test:\n- Does AI reply appear?\n- Correct tags (`ai_reply` / `human_requested`)?\n- Memory stored in Postgres?\nIf yes \u2192 workflow is ready!"
      },
      "typeVersion": 1
    }
  ],
  "active": false,
  "settings": {
    "executionOrder": "v1"
  },
  "connections": {}
}

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
• postgres
• supabaseApi
• zendeskApi

About this workflow

⚡ How it works

Source: https://n8n.io/workflows/7937/ — original creator credit. Request a take-down →

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