Developer Tools Codex plugins

Publisher description

Prerender Buddy helps users inspect public crawler-readable HTML and review read-only website health, crawler activity, AI visibility, recommendations, and content status from an authorized workspace.

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browser web-scraping chrome playwright crawler skill-generation website-automation

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…grades how well AI assistants, AI search, and answer engines can find, read, understand, and cite a website. Give it any public URL. It fetches the page, robots.txt, sitemap, and llms.txt the way an AI crawler does, without running JavaScript, and returns an A-F grade with a 0-100 score across nine categories: crawlability, understanding, answer readiness, citability, trust, content depth, freshness…

Publisher description

AI SEO audit and auto-fix for websites. Scores AI search visibility (AEO / GEO) with 26 checks, from your site code or a live URL, then adds schema markup, llms.txt, AI crawler rules and meta tags in your code, with a diff before every change.

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agentmarkup generates the machine-readable layer of a website at build time: llms.txt, JSON-LD structured data, markdown mirrors, AI-crawler robots.txt rules and Content-Signal headers, then validates what the build actually produced. It works out which layer owns your final HTML and installs the matching adapter rather than guessi…

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no404 records requests that land on missing pages of your website and sends those visitors to the closest working page from your sitemap. This plugin connects ChatGPT to your no404 account so you can look at that data and manage redirects in a conversation.… …ved. - See which missing URLs get the most traffic, and whether it comes from people, search engine crawlers, AI assistants or other bots. - Compare the last 7, 30 or 90 days with the period before. - Check one URL: what a visitor gets today, any manual redirect, and the closest page in your catalog…

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PerfBee is a site crawler for SEO and web teams. This app lets ChatGPT work with the sites in your PerfBee account. What it can do: - List your sites, with each site's latest crawl, its schedule and the credits left th… …w and fixed broken links. Who it is for: SEO specialists, marketers and developers who look after a website and use PerfBee to crawl it. Limitations: - You need a PerfBee account. - Crawls run only on sites you have added in PerfBee under My Sites. It cannot crawl other sites. - Starting a crawl use…

Publisher description

Transica checks how ready a website or an MCP server is for AI assistants. Two read-only tools: Scan a web page for AI readiness. Give it a public web address and it reads the page the way an AI tool would, then returns a score… …of 100, the checks that passed and failed, the top fixes and a link to the full report. It looks at crawler access, whether the content is readable without JavaScript, headings, structured data, links, form labels and more. Check an MCP server against directory rules. Give it a public MCP server add…

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Agent Ready checks how readable any website is to AI agents, assistants, and crawlers. Give it a URL and it scans the site against the Vercel Agent Readability Spec, the llms.txt standard, and emerging agent protocols (MCP server cards, A2A agent cards, agents.json), then rend…

Publisher description

…finding comes with the exact TXT record to paste. Discoverability covers what search engines and AI crawlers can actually get from the site: robots.txt rules for Googlebot, Bingbot, GPTBot, ClaudeBot, OAI-SearchBot and PerplexityBot, whether the CDN blocks them at the edge, the sitemap, www/apex redirects, canonical tags, titles and descriptions, Organization and WebSite structured data, llms.txt, and whether the opening paragraphs define the brand. A fetch-as-crawler tool shows the exact response a named crawler receives, and verify_fix re-checks one area aft…

Publisher full description

Analyze robots.txt and HTML you provide. Check crawler rules for a path, title and H1 presence, a canonical URL, a generic noindex directive, and image alt attributes. The tools do not fetch websites. Results describe the supplied text and do not prove crawling, indexing, rendering or citations. Do not submit passwords, API keys, payment information or sensitive personal data.