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BreadcrumbList Schema Auditor

Audits pages for valid BreadcrumbList structured data that matches visible breadcrumbs

Source Download skill
Repository
thedaviddias/Front-End-Checklist
Stars
74,632
Licence
MIT
Files
2 files

What it does

Once installed, the agent reviews a website's SEO markup to check whether breadcrumb navigation is marked up correctly for search engines. It checks that the JSON-LD BreadcrumbList data matches the breadcrumb trail visitors actually see, and that the rendered HTML and HTTP responses are consistent with the source files. It can also point out which routes or templates have problems and explain how to fix them.

Great for

  • Front-end developers checking SEO markup on a site before launch
  • SEO or marketing staff reviewing whether breadcrumbs qualify for enhanced search results
  • Teams auditing templates for crawlability and indexability issues

Skip it if

  • Sites without a visible breadcrumb trail, since the skill advises against adding BreadcrumbList data in that case
  • Anyone needing a full SEO audit beyond breadcrumbs, because the skill covers only this one rule
  • Teams expecting guaranteed search ranking changes, as the skill only describes how markup should be structured

Try asking

  • “Check whether the breadcrumb structured data on my product pages matches the visible breadcrumbs”
  • “Audit my site templates for valid BreadcrumbList JSON-LD and flag any mismatches”
  • “Explain how breadcrumb schema changes what appears in search results for my blog”
  • “Show me how to verify the final rendered HTML contains correct breadcrumb markup”
Step-by-step guide: how to use BreadcrumbList Schema AuditorInstall, first run, examples, tips and FAQs

Install in 3 steps

  1. 1

    Download the skill

    The ZIP contains the 2 original files, the MIT licence and an attribution note.

    breadcrumb.zip
  2. 2

    Add it to your agent

    Claude Code (all projects)

    mkdir -p ~/.claude/skills && unzip breadcrumb.zip -d ~/.claude/skills/

    Claude Code / Agent SDK (this project only)

    mkdir -p .claude/skills && unzip breadcrumb.zip -d .claude/skills/

    Claude apps (web/desktop): Settings → Capabilities → Skills → Upload skill, and choose the ZIP.

  3. 3

    Ask for the task

    No special command needed — the agent reads the skill's description and loads it when your request matches. Try one of the prompts above.

Get better results

  • Give the agent access to the project's templates and a rendered page URL or HTML so it can compare source with output.
  • Ask for a route-by-route list of violations, since the skill asks for exact templates to be flagged.
  • Use the referenced rule page for framework-specific code examples, as the main SKILL.md is brief.

What's inside

  • references/rule.md
  • SKILL.md

Redistributed unmodified from thedaviddias/Front-End-Checklist under the MIT licence. The assessment was drafted with AI from the skill's files on 2026-10-29. Skills can instruct your agent to run code — read SKILL.md and any scripts before installing.