Crea tu propio agente de chatgpt para auditorías de SEO en la página

addEventListener('fetch', event => {
  event.respondWith(handleRequest(event.request));
});

async function handleRequest(request) {
  const { searchParams } = new URL(request.url);
  const targetUrl = searchParams.get('url');
  const userAgentName = searchParams.get('user-agent');

  if (!targetUrl) {
    return new Response(
      JSON.stringify({ error: "Missing 'url' parameter" }),
      { status: 400, headers: { 'Content-Type': 'application/json' } }
    );
  }

  const userAgents = {
    googlebot: 'Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5X Build/MMB29P) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.6167.184 Mobile Safari/537.36 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)',
    samsung5g: 'Mozilla/5.0 (Linux; Android 13; SM-S901B) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/112.0.0.0 Mobile Safari/537.36',
    iphone13pmax: 'Mozilla/5.0 (iPhone14,3; U; CPU iPhone OS 15_0 like Mac OS X) AppleWebKit/602.1.50 (KHTML, like Gecko) Version/10.0 Mobile/19A346 Safari/602.1',
    msedge: 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/42.0.2311.135 Safari/537.36 Edge/12.246',
    safari: 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_2) AppleWebKit/601.3.9 (KHTML, like Gecko) Version/9.0.2 Safari/601.3.9',
    bingbot: 'Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm) Chrome/',
    chrome: 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/129.0.0.0 Safari/537.36',
  };

  const userAgent = userAgents(userAgentName) || userAgents.chrome;

  const headers = {
    'User-Agent': userAgent,
    'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8',
    'Accept-Encoding': 'gzip',
    'Cache-Control': 'no-cache',
    'Pragma': 'no-cache',
  };


  try {
    let redirectChain = ();
    let currentUrl = targetUrl;
    let finalResponse;

    // Follow redirects
    while (true) {
      const response = await fetch(currentUrl, { headers, redirect: 'manual' });

      // Add the current URL and status to the redirect chain only if it's not already added
      if (!redirectChain.length || redirectChain(redirectChain.length - 1).url !== currentUrl) {
        redirectChain.push({ url: currentUrl, status: response.status });
      }

      // Check if the response is a redirect
      if (response.status >= 300 && response.status  sitemap.replace('Sitemap: ', '').trim());

    // Metadata
    const titleMatch = html.match(/

Name: OnPage SEO Audit
Description: Analyze SEO performance of any webpage using custom user-agents. Get detailed insights into metadata, redirect chains, Open Graph tags, Twitter Cards, sitemaps, and more. Perfect for SEO professionals and developers.

Instructions: 
Trigger: When a user submits a URL (required) and an optional user-agent:
Instruction: Use the provided inputs to make an API request to retrieve SEO data. Default to the chrome user-agent if not provided.

Trigger: When the API returns valid data:
Instruction: Analyze the data and provide:
A summary of the page's SEO performance.
Actionable suggestions for improvement, categorized into metadata, technical SEO, and content.
Follow-up questions to clarify user priorities or goals, such as:
"Do you have specific goals for this page, such as improving search visibility, click-through rates, or user engagement?"
"Would you like me to focus on technical SEO or content-related improvements first?"
Example Response:
"The page's meta description is missing, which can impact click-through rates. Would you like me to suggest a draft description?"

Trigger: When the API returns HTTP 403:
Instruction:
Retry the request using the chrome user-agent.
If the issue persists:
Notify the user of the problem.
Suggest verifying the URL or user-agent compatibility.

Trigger: When the API returns a 400 error:
Instruction:
Clearly explain the error and provide actionable steps to resolve it (e.g., verify the URL format or ensure required parameters are provided).

Trigger: When data is incomplete or missing:
Instruction:
Request additional information from the user or permission to explore fallback data sources.
Example Follow-Up:
"The API response is missing a meta description for this page. Can you confirm if this was intentional, or should we explore other sources?"
Additional Guidelines:
Include:
A categorized summary of the page's SEO performance (e.g., metadata, technical SEO, content).
A prioritized list of recommended actions.
Visual examples or detailed explanations, when applicable.
Proactively address multiple detected issues with follow-up questions:
"The page has several critical issues, including missing Open Graph tags and a non-canonical URL. Would you like me to prioritize recommendations for social media or canonicalization first?"

Conversation starters
User-Agent: Googlebot, URL: https://example.com
Analyze the SEO details for https://example.com using Googlebot.
Analyze the page using the Samsung Galaxy S22 user-agent.
What metadata is available for https://example.com with Chrome?

Capabilities
Web Search
Code Interpreter & Data Analysis

{
"openapi": "3.1.0",
"info": {
"title": "Enhanced SEO Analysis and Audit API",
"description": "Fetch SEO data for analysis. Use the returned data to generate actionable SEO recommendations using AI or experts.",
"version": "1.2.0"
},
"servers": (
{
"url": "https://CHANGETOYOURURL.com/",
"description": "Base URL for Enhanced SEO Analysis API"
}
),
"paths": {
"/": {
"get": {
"operationId": "fetchAndAuditSEOData",
"summary": "Fetch and Audit SEO Data",
"description": "Retrieve SEO analysis data using a user-agent and URL and perform a basic SEO audit.",
"parameters": (
{
"name": "user-agent",
"in": "query",
"description": "The user-agent for the request.",
"required": true,
"schema": {
"type": "string",
"enum": ("chrome", "googlebot", "iphone13pmax", "samsung5g")
}
},
{
"name": "url",
"in": "query",
"description": "The URL of the webpage to analyze.",
"required": true,
"schema": {
"type": "string",
"format": "uri"
}
}
),
"responses": {
"200": {
"description": "Successful response with audit results",
"content": {
"application/json": {
"schema": {
"type": "object",
"properties": {
"metadata": {
"type": "object",
"properties": {
"title": { "type": "string" },
"metaDescription": { "type": "string" },
"canonical": { "type": "string" }
}
},
"redirectChain": {
"type": "array",
"items": {
"type": "object",
"properties": {
"url": { "type": "string" },
"status": { "type": "integer" }
}
}
},
"openGraph": {
"type": "object",
"properties": {
"ogTitle": { "type": "string" },
"ogDescription": { "type": "string" },
"ogImage": { "type": "string" }
}
},
"twitterCards": {
"type": "object",
"properties": {
"twitterTitle": { "type": "string" },
"twitterDescription": { "type": "string" },
"twitterImage": { "type": "string" }
}
},
"sitemaps": {
"type": "array",
"items": { "type": "string" }
},
"robotsTxt": {
"type": "string"
},
"audit": {
"type": "object",
"properties": {
"issues": {
"type": "array",
"items": { "type": "string" }
},
"recommendations": {
"type": "array",
"items": { "type": "string" }
}
}
},
"auditSummary": {
"type": "array",
"items": {
"type": "string"
}
},
"nextSteps": {
"type": "array",
"items": {
"type": "string"
}
}
}
}
}
}
},
"400": {
"description": "Bad Request",
"content": {
"application/json": {
"schema": {
"type": "object",
"properties": {
"error": { "type": "string" }
}
}
}
}
}
}
}
}
}
}