n8n-workflows/workflows/Dynamically generate a webpage from user request using OpenAI Structured Output.json

{
  "id": "eXiaTDyKfXpMeyLh",
  "meta": {
    "instanceId": "f4f5d195bb2162a0972f737368404b18be694648d365d6c6771d7b4909d28167",
    "templateCredsSetupCompleted": true
  },
  "name": "Dynamically generate HTML page from user request using OpenAI Structured Output",
  "tags": [],
  "nodes": [
    {
      "id": "b1d9659f-4cd0-4f87-844d-32b2af1dcf13",
      "name": "Respond to Webhook",
      "type": "n8n-nodes-base.respondToWebhook",
      "position": [
        2160,
        380
      ],
      "parameters": {
        "options": {
          "responseHeaders": {
            "entries": [
              {
                "name": "Content-Type",
                "value": "text/html; charset=UTF-8"
              }
            ]
          }
        },
        "respondWith": "text",
        "responseBody": "={{ $json.html }}"
      },
      "typeVersion": 1.1
    },
    {
      "id": "5ca8ad3e-7702-4f07-af24-d38e94fdc4ec",
      "name": "Open AI - Using Structured Output",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
        1240,
        380
      ],
      "parameters": {
        "url": "https://api.openai.com/v1/chat/completions",
        "method": "POST",
        "options": {},
        "jsonBody": "={\n \"model\": \"gpt-4o-2024-08-06\",\n \"messages\": [\n {\n \"role\": \"system\",\n \"content\": \"You are a user interface designer and copy writter. Your job is to help users visualize their website ideas. You design elegant and simple webs, with professional text. You use Tailwind framework\"\n },\n {\n \"role\": \"user\",\n \"content\": \"{{ $json.query.query }}\"\n }\n ],\n \"response_format\":\n{\n \"type\": \"json_schema\",\n \"json_schema\": {\n \"name\": \"ui\",\n \"description\": \"Dynamically generated UI\",\n \"strict\": true,\n \"schema\": {\n \"type\": \"object\",\n \"properties\": {\n \"type\": {\n \"type\": \"string\",\n \"description\": \"The type of the UI component\",\n \"enum\": [\n \"div\",\n \"span\",\n \"a\",\n \"p\",\n \"h1\",\n \"h2\",\n \"h3\",\n \"h4\",\n \"h5\",\n \"h6\",\n \"ul\",\n \"ol\",\n \"li\",\n \"img\",\n \"button\",\n \"input\",\n \"textarea\",\n \"select\",\n \"option\",\n \"label\",\n \"form\",\n \"table\",\n \"thead\",\n \"tbody\",\n \"tr\",\n \"th\",\n \"td\",\n \"nav\",\n \"header\",\n \"footer\",\n \"section\",\n \"article\",\n \"aside\",\n \"main\",\n \"figure\",\n \"figcaption\",\n \"blockquote\",\n \"q\",\n \"hr\",\n \"code\",\n \"pre\",\n \"iframe\",\n \"video\",\n \"audio\",\n \"canvas\",\n \"svg\",\n \"path\",\n \"circle\",\n \"rect\",\n \"line\",\n \"polyline\",\n \"polygon\",\n \"g\",\n \"use\",\n \"symbol\"\n]\n },\n \"label\": {\n \"type\": \"string\",\n \"description\": \"The label of the UI component, used for buttons or form fields\"\n },\n \"children\": {\n \"type\": \"array\",\n \"description\": \"Nested UI components\",\n \"items\": {\n \"$ref\": \"#\"\n }\n },\n \"attributes\": {\n \"type\": \"array\",\n \"description\": \"Arbitrary attributes for the UI component, suitable for any element using Tailwind framework\",\n \"items\": {\n \"type\": \"object\",\n \"properties\": {\n \"name\": {\n \"type\": \"string\",\n \"description\": \"The name of the attribute, for example onClick or className\"\n },\n \"value\": {\n \"type\": \"string\",\n \"description\": \"The value of the attribute using the Tailwind framework classes\"\n }\n },\n \"additionalProperties\": false,\n \"required\": [\"name\", \"value\"]\n }\n }\n },\n \"required\": [\"type\", \"label\", \"children\", \"attributes\"],\n \"additionalProperties\": false\n }\n }\n}\n}",
        "sendBody": true,
        "sendHeaders": true,
        "specifyBody": "json",
        "authentication": "predefinedCredentialType",
        "headerParameters": {
          "parameters": [
            {
              "name": "Content-Type",
              "value": "application/json"
            }
          ]
        },
        "nodeCredentialType": "openAiApi"
      },
      "credentials": {
        "openAiApi": {
          "id": "WqzqjezKh8VtxdqA",
          "name": "OpenAi account - Baptiste"
        }
      },
      "typeVersion": 4.2
    },
    {
      "id": "24e5ca73-a3b3-4096-8c66-d84838d89b0c",
      "name": "OpenAI - JSON to HTML",
      "type": "@n8n/n8n-nodes-langchain.openAi",
      "position": [
        1420,
        380
      ],
      "parameters": {
        "modelId": {
          "__rl": true,
          "mode": "list",
          "value": "gpt-4o-mini",
          "cachedResultName": "GPT-4O-MINI"
        },
        "options": {
          "temperature": 0.2
        },
        "messages": {
          "values": [
            {
              "role": "system",
              "content": "You convert a JSON to HTML. \nThe JSON output has the following fields:\n- html: the page HTML\n- title: the page title"
            },
            {
              "content": "={{ $json.choices[0].message.content }}"
            }
          ]
        },
        "jsonOutput": true
      },
      "credentials": {
        "openAiApi": {
          "id": "WqzqjezKh8VtxdqA",
          "name": "OpenAi account - Baptiste"
        }
      },
      "typeVersion": 1.3
    },
    {
      "id": "c50bdc84-ba59-4f30-acf7-496cee25068d",
      "name": "Format the HTML result",
      "type": "n8n-nodes-base.html",
      "position": [
        1940,
        380
      ],
      "parameters": {
        "html": "<!DOCTYPE html>\n\n<html>\n<head>\n <meta charset=\"UTF-8\" />\n <script src=\"https://cdn.tailwindcss.com\"></script>\n <title>{{ $json.message.content.title }}</title>\n</head>\n<body>\n{{ $json.message.content.html }}\n</body>\n</html>"
      },
      "typeVersion": 1.2
    },
    {
      "id": "193093f4-b1ce-4964-ab10-c3208e343c69",
      "name": "Sticky Note",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        1134,
        62
      ],
      "parameters": {
        "color": 7,
        "width": 638,
        "height": 503,
        "content": "## Generate HTML from user query\n\n**HTTP Request node**\n- Send the user query to OpenAI, with a defined JSON response format - *using HTTP Request node as it has not yet been implemented in the OpenAI nodes*\n- The response format is inspired by the [Structured Output defined in OpenAI Introduction post](https://openai.com/index/introducing-structured-outputs-in-the-api)\n- The output is a JSON containing HTML components and attributed\n\n\n**OpenAI node**\n- Format the response from the previous node from JSON format to HTML format"
      },
      "typeVersion": 1
    },
    {
      "id": "0371156a-211f-4d92-82b1-f14fe60d4b6b",
      "name": "Sticky Note1",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        0,
        60
      ],
      "parameters": {
        "color": 7,
        "width": 768,
        "height": 503,
        "content": "## Workflow: Dynamically generate an HTML page from a user request using OpenAI Structured Output\n\n**Overview**\n- This workflow is a experiment to build HTML pages from a user input using the new Structured Output from OpenAI.\n- The Structured Output could be used in a variety of cases. Essentially, it guarantees the output from the GPT will follow a defined structure (JSON object).\n- It uses Tailwind CSS to make it slightly nicer, but any\n\n**How it works**\n- Once active, go to the production URL and add what you'd like to build as the parameter \"query\"\n- Example: https://production_url.com?query=a%20signup%20form\n- OpenAI nodes will first output the UI as a JSON then convert it to HTML\n- Finally, the response is integrated in a HTML container and rendered to the user\n\n**Further thoughts**\n- Results are not yet amazing, it is hard to see the direct value of such an experiment\n- But it showcase the potential of the Structured Output. Being able to guarantee the output format is key to build robust AI applications."
      },
      "typeVersion": 1
    },
    {
      "id": "06380781-5189-4d99-9ecd-d8913ce40fd5",
      "name": "Webhook",
      "type": "n8n-nodes-base.webhook",
      "position": [
        820,
        380
      ],
      "webhookId": "d962c916-6369-431a-9d80-af6e6a50fdf5",
      "parameters": {
        "path": "d962c916-6369-431a-9d80-af6e6a50fdf5",
        "options": {
          "allowedOrigins": "*"
        },
        "responseMode": "responseNode"
      },
      "typeVersion": 2
    }
  ],
  "active": true,
  "pinData": {},
  "settings": {
    "executionOrder": "v1"
  },
  "versionId": "d2307a2a-5427-4769-94a6-10eab703a788",
  "connections": {
    "Webhook": {
      "main": [
        [
          {
            "node": "Open AI - Using Structured Output",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "OpenAI - JSON to HTML": {
      "main": [
        [
          {
            "node": "Format the HTML result",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Format the HTML result": {
      "main": [
        [
          {
            "node": "Respond to Webhook",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Open AI - Using Structured Output": {
      "main": [
        [
          {
            "node": "OpenAI - JSON to HTML",
            "type": "main",
            "index": 0
          }
        ]
      ]
    }
  }
}