# SpecCheck

SpecCheck audits a website URL against The Website Specification (121 checks across 10
categories), grading each pass / partial / fail / N-A with concrete evidence, including an
Agent Readiness category (llms.txt, AI-crawler rules, agent cards, MCP/NLWeb/WebMCP, schemamap)
that existing auditors do not score.

It is free, needs no sign-up, and runs the scan server-side: paste a URL and the instant checks
(HTTP headers, files, DNS, TLS) return in seconds, while slower checks stream in as they finish.

## Categories (Agent Readiness leads)
Agent Readiness, Foundations, SEO, Accessibility, Security, Performance, Privacy, Resilience,
Well-Known URIs, Internationalisation.

## Scoring and honesty
Scores are per-category, weighted by requirement level (required / recommended / optional), never a
single number out of 121. N-A, manual, and error results are excluded from the denominator. Every
result carries its evidence and a link to the exact spec page. SpecCheck never fabricates a verdict:
a check it cannot verify automatically is returned as "manual" (with how-to guidance) or "N-A", not a guess.

## Acting on results
Every failing check has a "Copy fix prompt" action that produces a paste-ready instruction for an AI
coding tool (for example Cursor or Claude Code): the evidence, what the spec requires, a link to the
source, and a suggested fix. The full report can be downloaded as Markdown.

## Pages
- https://speccheck.website/ : what SpecCheck is
- https://speccheck.website/audit : run a scan (shareable as /audit?url=...)
- https://speccheck.website/about : about & credits

## Attribution
Audits are based on The Website Specification by Joost de Valk and contributors
(https://specification.website), licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). SpecCheck is an independent tool and
is not affiliated with or endorsed by the Website Specification project. We have adapted the
checklist into automated probes; each result links back to its source spec page.