specification.website

A reference site that catalogs the modern web platform as a tagged checklist. Each spec gets one short paragraph and a Required / Recommended / Optional / Avoid tag, with deeper per-spec pages linked off the catalog. Built as a static reference; the author also proposes their own emerging conventions (most notably Schemamap) alongside ratified standards.

The site organizes everything into nine top-level categories: Foundations, SEO, Accessibility, Security, Well-Known URIs, Agent Readiness, Performance, Resilience, Internationalisation. See specification-website-checklist for a walk-through of the whole catalog as of May 2026.

Why it matters

Three things stand out:

1. Agent Readiness sits next to SEO and a11y as a peer category. The framing treats LLM legibility as a first-class web concern, not a footnote.
2. The catalog tracks emerging-but-still-draft conventions like Content-Signal in robots.txt, Web Bot Auth, NLWeb, WebMCP, DNS-AID. Useful as a single index of what's being proposed.
3. The site dogfoods its own checklist — including the Schemamap proposal, which only exists on this site.

Format

• Top page (/checklist/) is the master catalog: nine sections, one bullet per item with a one-paragraph summary and a status tag.
• Each item links to a dedicated spec page at /spec/<category>/<slug>/ with longer explanation, examples, and references.
• Markdown source isn't (yet) exposed at .md URLs even though the checklist itself recommends doing so.

Related concepts

• agent-readiness — umbrella concept this site puts on the map.
• llms-txt — recommended by the site as part of the Agent Readiness baseline.
• supply-chain-security — adjacent topic the site doesn't cover; its Security section is transport/policy-layer only.