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    Practical guide · SEO and AI tools

    Claude SEO tool: how to use Claude and its skills for SEO

    By Franck Gordi8 min read

    A Claude SEO tool means using Claude, Anthropic’s assistant, for search optimization tasks: technical audits, tag checks, structured data or content review. The term also covers claude-seo, an open source set of skills for Claude Code. A skill is a folder of instructions and scripts that Claude loads when a request matches its description.

    Do you want to hand part of your SEO to Claude? This guide separates what the tool can check reliably from what stays your editorial responsibility.

    Key takeaways

    • A skill is a folder containing a SKILL.md file: Claude only reads its name and description, then loads the instructions when the request matches.
    • claude-seo is a third-party project under the MIT license that runs audit sub-agents in Claude Code; its performance figures are published by its author.
    • Without a connection to Search Console or a data API, a skill analyzes your pages but measures neither real rankings nor traffic.
    • Google evaluates the quality of published content, not the tool used: every fix Claude suggests must be checked before going live.
    Open toolbox holding cards with magnifying glass, checklist and chain link symbols, next to a terminal, and a hand holding an orange pencil: a Claude SEO tool illustration on a cream background.
    Generated illustration: Claude skills, a toolbox you review before you use it.

    What is a Claude skill, in practice?

    According to Anthropic’s documentation, a skill is a folder that contains a SKILL.md instruction file, and optionally scripts or reference files. Claude does not read every skill in full: it first sees each skill’s name and description, loads the SKILL.md file when a request matches, then opens supporting files only if the instructions point to them.

    Skills are available in claude.ai, in the API and in Claude Code, the command line tool. In Claude Code, a skill can also be invoked directly with a command such as /skill-name. They follow an open specification, Agent Skills.

    For SEO, the value is repeatability: an audit checklist, a report format or editorial rules written once are applied the same way on every request. Anthropic notes, however, that a skill does not replace a connector: it can describe how to use a service, but cannot reach it on its own.

    Sources: Anthropic: Agent Skills overview · Claude: how skills work · Claude Code: extend Claude with skills · Claude: create a custom skill

    What does a tool like claude-seo do?

    claude-seo is an open source project published by Daniel Agrici under the MIT license. Its website presents it as an SEO toolkit for Claude Code, with sub-skills, specialist agents run in parallel and an audit command that produces a prioritized action plan. The counters it displays (number of skills, agents, GitHub stars) change between versions: they are the author’s own statements.

    Areas covered according to its documentation: technical SEO (crawling, indexability, Core Web Vitals, JavaScript rendering), E-E-A-T signals, structured data validation and generation, and checks related to AI engines such as llms.txt. An independent review by explainx.ai points out that the gains claimed in the repository come from the author’s own site, and that a full audit uses a notable share of your Claude usage.

    This kind of tool mostly replaces data collection and pre-diagnosis. It does not replace a keyword database, a ranking history or the editorial decision.

    Sources: Claude SEO (open source project by Daniel Agrici) · explainx.ai: claude-seo review

    See how AI agents change SEO work.

    What Claude checks well, and what it cannot see

    An audit skill reads what is observable in your pages: title and meta tags, canonical, hreflang, heading hierarchy, structured data, robots.txt, sitemap, internal links. These checks are verifiable, and this is where automation saves time.

    Without a connected data source, however, the tool knows neither your rankings, nor your clicks, nor a keyword’s search volume. Any such figure it produces without a connector is a model estimate, not a measurement. Claude’s web search, when enabled, returns cited sources, but it does not replace Search Console.

    TaskReliability without a connectorSource to add
    Tags, canonical, hreflangDirect HTML checkNone
    Structured dataSyntax and consistency validationGoogle Rich Results Test
    Rankings and trafficNot measuredSearch Console, rank tracker
    Keyword volume and difficultyNot measuredKeyword database (Semrush or equivalent)
    Editorial qualityOpinion to verifyHuman review and sources

    Sources: Anthropic: web search tool · Claude: create a custom skill

    Measure AI visibility with real data.

    Writing content with Claude without losing quality

    Google states that using generative AI is not a problem in itself: what matters is the usefulness of the published content. Mass-producing pages with no added value to manipulate rankings, however, falls under its spam policies, whatever the tool.

    Good use of Claude for writing is therefore framed: you provide the facts, sources and angle, Claude structures, rewrites or reviews. An editorial skill can enforce your rules (one idea per page, no figure without a source, real dates), but it does not verify on its own that a claim is true.

    Sources: Google Search Central: AI-generated content

    Review the E-E-A-T signals Google expects.

    An action plan to test Claude on your site

    Start small, on a scope you can check by hand, and keep a dated record of every check.

    1. Pick 5 to 10 representative pages and record their current state (tags, structured data, indexing in Search Console).
    2. Run an audit with an SEO skill, reading the code of any third-party skill before installing it.
    3. Check every recommendation on the live page before applying it.
    4. Write your own skill for your recurring editorial rules, with a precise description.
    5. Connect a real data source (Search Console, keyword database) before any traffic-related decision.
    6. Compare results in Search Console over several weeks, without attributing a change to the tool without other evidence.

    Frequently asked questions

    No. It is an open source project published by an independent developer, Daniel Agrici, under the MIT license. Anthropic provides the skills format and Claude Code, not this tool.

    Not necessarily. Skills also work in claude.ai on paid plans, with code execution turned on. Tools like claude-seo, however, install in Claude Code, a command line tool.

    Not reliably without a connected source. Volume or difficulty should come from a keyword database such as Semrush, not from a model estimate.

    Google says it evaluates the quality and usefulness of content, not the production tool. Pages mass-produced without added value remain covered by its spam policies.

    No. It covers using Claude as an SEO tool. Your site’s visibility in AI answers is covered in the magazine’s LLM SEO guide.

    Sources and limitations

    Documentation check on November 8, 2026. How skills work is attributed to Anthropic’s documentation. claude-seo features are those stated by its author, cross-checked with an independent review; Rankio has not measured the quality of its audits. Rules on AI-generated content are Google’s.