Claude Code for technical SEO: what it does well and how to check it

Claude Code is very good at the repetitive, site-wide side of technical SEO: crawling a copy of your site, comparing old and new pages, writing redirect maps, adding structured data to templates, fixing broken internal links and rebuilding sitemaps. It does this by writing small scripts and running them, so on a large job your effort goes into the rules and the checks rather than into each page. What it doesn't do is decide what matters. People still choose priorities, write the rules, and check the results before anything ships.

This guide covers the technical SEO jobs Claude Code handles well, how to verify each one, and what we learned using it on eseospace.com, our own site of more than 2,000 URLs. It assumes you know the basics of the tool; if not, start with what Claude Code can do for a business website.

Why Claude Code fits technical SEO

Most technical SEO fixes are simple on one page and tedious on hundreds. A missing canonical tag, a redirect to update, a schema property to correct: each is a few lines, repeated across templates and posts. Claude Code reads your site's files, writes a script for the pattern, runs it, and shows you the counts. Anthropic's best-practices page gives the rule that makes this work: "Give Claude a check it can run." For SEO, the check is a crawl, a diff of page elements or a validator.

It is less useful for judgment calls: which pages to consolidate, which keywords matter to your business, or whether a slow page is worth fixing before a revenue page. Those stay with you or your SEO lead.

Technical audits on a copy of the site

Ask Claude Code to crawl a local or staging build and report, per URL, the status code, title, meta description, canonical, robots directive, H1, structured-data types and internal links. Crawling your own files or staging server avoids loading your live site and gives a repeatable baseline.

Two things to watch. First, the crawl reflects what it can see: if your site renders key content with JavaScript, the script needs a real browser. Second, a list of findings isn't a plan. Ask Claude to group issues by template, because one template fix often clears hundreds of rows. If you want a person to run the audit and prioritize it, that is what our technical SEO service does.

Title and meta description rewrites at scale

Claude Code can draft new titles and meta descriptions for every page from rules you set: length targets, the primary topic, your brand name policy, no duplicates. The safe pattern:

1. Export current titles and descriptions to a spreadsheet, with Search Console clicks and impressions per page if you have them.
2. Write the rules, and ask Claude to draft rewrites only for pages that break them.
3. A person reviews the drafts, starting with the highest-traffic pages, and edits anything inaccurate or off-brand.
4. Apply approved rows with a script on a copy, then re-crawl to confirm the counts.

Treat AI-drafted titles as drafts. They can sound right while misdescribing the page or promising something your business doesn't offer.

Redirect maps and migration parity

Redirects are where automation pays off and where errors are expensive. Google's redirect documentation recommends "a permanent server-side redirect whenever possible" and notes that "The 301 and 308 status codes mean that a page has permanently moved."

Claude Code can match old URLs to new ones by slug, title and content, flag the ones it can't match with confidence, find chains and loops, and write the rules in your server's or host's format. A person decides the ambiguous cases. Then test every old URL against the new site and confirm each returns one permanent redirect to a page that returns 200.

For a migration, add a parity check: compare titles, meta descriptions, robots, canonicals, structured-data types and H1s on old versus new pages. When we rebuilt eseospace.com, that check found one systematic problem (relative URLs), and after the fix showed zero differences across all 217 pages checked. As of September 2026, the site's redirects file held 235 rules. Our article on building a 301 redirect map covers the method in detail.

Structured data at scale

Schema markup is a good fit because it's structured, repetitive and testable. Claude Code can add Organization, LocalBusiness, Article, Product or BreadcrumbList markup to templates (Google stopped showing FAQ rich results on May 7, 2026, so FAQ markup is no longer worth adding for that reason), fill it from page data, and validate the JSON. The risk is markup that doesn't match the page: a review count that isn't shown, an FAQ that isn't on the page, a price that changed.

Google's structured data policies say "Don't mark up content that is not visible to readers of the page." Make that a rule in your CLAUDE.md, and spot-check a sample of pages by comparing the markup with what a visitor actually sees.

Internal links, broken links and sitemaps

• Internal links. Claude Code can map which pages link where, find orphan pages, and suggest contextual links between related articles. A person approves the anchor text and placement, because forced links read badly. See our guide to internal linking and topic clusters for the strategy side.
• Broken links. It can crawl every internal and external link on a copy, list the failures, and propose fixes: update the URL, point to a redirect target, or remove the link.
• Sitemaps. Google's sitemap guide limits a single sitemap to "50MB (uncompressed) or 50,000 URLs," says "Google ignores <priority> and <changefreq> values," and uses lastmod only if it's "consistently and verifiably" accurate. A script that stamps today's date on every page each build is the kind of mistake to avoid. Tie lastmod to real content changes.

Connecting Search Console and Analytics data

Technical SEO is better with real data. As of October 2026:

• Search Console API. Google's official API provides "programmatic access to the most popular reports and actions in your Search Console account," including search analytics and sitemaps. Its URL inspection quota is 2,000 queries per day per site, per Google's usage limits, so plan bulk indexing checks around it. Claude Code can write a script that calls the API with credentials you set up yourself.
• Google Analytics MCP server. Google's repository is titled "Google Analytics MCP Server (Experimental)," and its docs say it "is available for read requests only." It includes a section on configuring Claude Code.
• No Search Console MCP server from Google. Google's Search Console developer pages describe only the API. The Search Console MCP servers on GitHub are third-party projects; treat them as unvetted code with access to your data.

Keep credential files out of Claude's reach with deny rules, and never paste keys into a prompt. Our guide to MCP servers for website teams covers setup and precautions.

How to verify Claude Code's SEO work

Counts and output are where these problems show up. On our own site, a faulty "already processed?" check made every run after the first skip every page silently, and only the counts showed it. Those bugs and the habits that prevent them are covered in common Claude Code mistakes on websites.

What we did on eseospace.com

These figures are from eseospace.com's own repository, not client work. During and after the June 2026 rebuild off WordPress:

• About 2,227 URLs migrated. The parity test described above covered 217 of those pages.
• An accuracy audit in September 2026 applied more than 4,400 corrections across about 750 pages as scripted edits, each tested on a copy first.
• In our own lab test with PageSpeed Insights (desktop, specific pages, not field data), the score went from 56 to 86 and Total Blocking Time fell from about 1,200 ms to near zero, mainly by delaying theme scripts until first interaction. CSS requests on a typical page dropped from 75 to 4.

People set priorities, owned every fact and claim, and approved each deploy. The full story is in our eseospace.com rebuild case study.

Conclusion

Use Claude Code for the technical SEO work that follows rules across many pages, and give it a check for every job: a crawl, a parity diff, a validator, a second run that changes nothing. Keep the judgment calls, the facts and the final approval with people, and check results against Google's documentation rather than assumptions. If you'd like that work done for you, or a site rebuilt with SEO parity checked page by page, see our Claude Code development services. More guides are in our Claude Code Guide.

Frequently asked questions