Skill Claude CodeCodex
Audit a website's rel=canonical tags for SEO. Crawls pages and probes each canonical target to find missing canonicals, multiple conflicting canonicals, canonicals pointing at non-200 or redirecting or noindexed URLs, relative (non-absolute) canonicals, cross-host canonicals, https-to-http protocol downgrades…
Skill Claude CodeCodex
Audit a website's content quality for SEO. Crawls pages and measures visible word count, text-to-HTML ratio, and content fingerprints to find thin content, exact duplicate body text across pages, near-duplicate (templated/boilerplate) pages, pages that are mostly markup with little text, and pages missing an H1. Use…
Skill Claude CodeCodex
Audit a website's Core Web Vitals and page-experience signals (LCP, CLS, INP, TTFB). Optionally pulls real field data from Google PageSpeed Insights (CrUX) and always collects browserless lab proxies — render-blocking CSS/JS, page weight, image dimension and lazy-loading hygiene, TTFB, text compression, DOM size…
Skill Claude CodeCodex
Audit a website's external (outbound) links for SEO. Crawls pages to find broken external links, redirected targets, insecure HTTP links, missing rel attributes on affiliate or sponsored links, unsafe target="blank" usage, and risky or low-quality link destinations. Use when the user asks to audit, analyze, check, or…
Skill Claude CodeCodex
Run a complete technical-SEO audit of a website by orchestrating every individual audit (sitemap, robots.txt, redirects, internal links, external links, metadata, headings, images, schema markup, canonical tags, Open Graph, mixed content, pagination, soft 404s, content quality, keyword cannibalization, site…
Skill Claude CodeCodex
Audit a website's heading structure (H1–H6) for SEO and accessibility. Crawls pages to find missing or multiple H1s, skipped heading levels, empty headings, headings that don't start at H1, overly long headings, and duplicate headings. Use when the user asks to audit, analyze, check, or improve heading tags, the H1…
Skill Claude CodeCodex
Audit a website's images for SEO and Core Web Vitals. Crawls pages to find images with missing or empty alt text, missing width/height (layout shift), no lazy loading, oversized files, legacy formats (no WebP/AVIF), generic filenames, and broken image URLs. Use when the user asks to audit, analyze, check, or improve…
Skill Claude CodeCodex
Audit a website's internal linking structure for SEO. Crawls pages to find broken internal links, orphan pages, redirect chains, deep pages, missing or weak anchor text, and internal link distribution issues. Use when the user asks to audit, analyze, or improve internal links, site structure, link equity, or…
Skill Claude CodeCodex
Audit a website for keyword cannibalization — multiple pages competing for the same search query. Crawls pages and compares titles, H1s, and body keywords to find pages with duplicate title targets, clusters of pages whose keyword signatures overlap, and pages sharing the same primary keyword phrase. Use when the user…
Skill Claude CodeCodex
Audit a website's /llms.txt for AI/LLM discoverability. Fetches and parses the llms.txt markdown file (per llmstxt.org) to find a missing file, a file served as HTML instead of markdown, a missing required H1 title, a missing blockquote summary, broken (non-200) or redirecting links, links missing descriptions…
Skill Claude CodeCodex
Audit a website's title tags and meta descriptions for SEO. Crawls pages to find missing, duplicate, too-long, too-short, or multiple title tags and meta descriptions, generic or boilerplate titles, and metadata that wastes the snippet. Use when the user asks to audit, analyze, check, or improve page titles, title…
Skill Claude CodeCodex
Audit an HTTPS website for mixed content and insecure resources. Crawls pages and inspects every subresource to find active mixed content (http scripts, stylesheets, iframes, objects browsers block on https pages), insecure form actions that submit over http, passive mixed content (http images, audio, video), legacy…
Skill Claude CodeCodex
Audit a website's Open Graph and Twitter Card (social sharing) metadata for SEO and link previews. Crawls pages and probes each share image to find missing og:title, og:description, og:image, or og:url; broken or non-image or relative og:image URLs; og:url that mismatches the canonical; missing twitter:card…
Skill Claude CodeCodex
Audit a website's pagination (paginated blog listings, category pages, and search results) for SEO. Crawls pages and inspects canonical tags, meta robots, rel=next/prev, and page-number URL patterns to find paginated pages that canonicalize to page 1 (hiding deep content from the index), noindexed component pages…
Skill Claude CodeCodex
Audit a website's redirects for SEO. Resolves the full redirect chain for every URL to find redirect chains and loops, redirects that end in 404s or errors, temporary (302) redirects used for permanent moves, HTTPS-to-HTTP downgrades, client-side meta-refresh and JavaScript redirects, dropped query strings, and…
Skill Claude CodeCodex
Audit a website's robots.txt for SEO. Fetches and parses robots.txt to find a redirected or HTML-served file, a 5xx that Google reads as "block everything", a sitewide Disallow: / that blocks the whole site, syntax errors and directives before any User-agent, CSS/JS resources blocked from rendering, missing or…
Skill Claude CodeCodex
Audit a website's structured data (schema markup) for SEO. Extracts JSON-LD, Microdata, and RDFa from pages, validates it against schema.org and Google rich result requirements, and finds missing, invalid, or incomplete markup. Use when the user asks to audit, validate, fix, or improve schema markup, structured data…
Skill Claude CodeCodex
Audit a website's architecture and crawlability for SEO. Crawls the site and inspects robots.txt and XML sitemaps to find hostname/protocol duplication, URL structure problems, excessive crawl depth, weak directory taxonomy, blocked or conflicting crawl and index directives, and sitemap-to-crawl parity gaps. Use when…
Skill Claude CodeCodex
Audit a website's XML sitemaps for SEO. Discovers sitemaps from robots.txt, follows sitemap index files, and validates every listed URL to find broken (non-200) URLs, redirecting URLs, noindexed or robots-blocked URLs, URLs canonicalized to a different page, wrong-host or wrong-protocol URLs, duplicate URLs, oversized…
Skill Claude CodeCodex
Audit a website for soft 404s — pages that return HTTP 200 but are really "not found", empty, or error pages. Crawls pages and sends a missing-page probe to find error pages served with a 200 status, a server that returns 200 for every unknown URL instead of a real 404/410, thin pages matching the site's error…