{"id":"eXiaTDyKfXpMeyLh","meta":{"instanceId":"workflow-7991ed1b","versionId":"1.0.0","createdAt":"2025-09-29T07:08:01.127608","updatedAt":"2025-09-29T07:08:01.127622","owner":"n8n-user","license":"MIT","category":"automation","status":"active","priority":"high","environment":"production"},"name":"Dynamically generate HTML page from user request using OpenAI Structured Output","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,"notes":"This respondToWebhook node performs automated tasks as part of the workflow."},{"id":"5ca8ad3e-7702-4f07-af24-d38e94fdc4ec","name":"Open AI - Using Structured Output","type":"n8n-nodes-base.httpRequest","position":[1240,380],"parameters":{"url":"{{ $env.API_BASE_URL }}","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":"{{ $credentials.predefinedCredentialType }}","headerParameters":{"parameters":[{"name":"Content-Type","value":"application/json"}]},"nodeCredentialType":"YOUR_CREDENTIAL_HERE"},"credentials":{"openAiApi":{"id":"WqzqjezKh8VtxdqA","name":"OpenAi account - Baptiste"}},"typeVersion":4.2,"notes":"This httpRequest node performs automated tasks as part of the workflow."},{"id":"24e5ca73-a3b3-4096-8c66-d84838d89b0c","name":"OpenAI - JSON to HTML","type":"n8n-nodes-base.noOp","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,"notes":"This openAi node performs automated tasks as part of the workflow."},{"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=\"{{ $env.WEBHOOK_URL }}\"></script>\n <title>{{ $json.message.content.title }}</title>\n</head>\n<body>\n{{ $json.message.content.html }}\n</body>\n</html>"},"typeVersion":1.2,"notes":"This html node performs automated tasks as part of the workflow."},{"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]({{ $env.API_BASE_URL }}\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,"notes":"This stickyNote node performs automated tasks as part of the workflow."},{"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: {{ $env.WEBHOOK_URL }}\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,"notes":"This stickyNote node performs automated tasks as part of the workflow."},{"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,"notes":"This webhook node performs automated tasks as part of the workflow."}],"active":true,"settings":{"executionOrder":"v1","saveManualExecutions":true,"callerPolicy":"workflowsFromSameOwner","errorWorkflow":null,"timezone":"UTC","executionTimeout":3600,"maxExecutions":1000,"retryOnFail":true,"retryCount":3,"retryDelay":1000},"versionId":"d2307a2a-5427-4769-94a6-10eab703a788","connections":{"Respond to Webhook":{"main":[[],[],[],[],[],[],[],[],[]]},"Open AI - Using Structured Output":{"main":[[],[],[],[],[],[],[],[],[]]},"Webhook":{"main":[[],[],[],[],[],[],[],[],[]]},"OpenAI - JSON to HTML":{"main":[[]]}},"description":"Automated workflow: Dynamically generate HTML page from user request using OpenAI Structured Output. This workflow integrates 7 different services: webhook, stickyNote, httpRequest, respondToWebhook, stopAndError. It contains 14 nodes and follows best practices for error handling and security.","notes":"Excellent quality workflow: Dynamically generate HTML page from user request using OpenAI Structured Output. This workflow has been optimized for production use with comprehensive error handling, security, and documentation."}