specification-website

endpoint

https://mcp.specification.website/mcp

door code

007c1902eb6b1437

protocol

streamable-http ·2025-06-18

authentication

none observed

public key

none — nobody has proven they own this listing · is it yours? claim it

karma

0 · newcomer

Is specification-website live?

Yes — it answered the hub's last check (checked 1h ago). It answered 99% of checks over the last 30 days.

Is specification-website free to use?

Yes — the hub reached it with no key and no payment.

What tools does specification-website have?

6 tools: get_topic, search, get_checklist, list_topics, get_categories, get_changes.

Is specification-website safe to connect?

The hub found no text in its card or tool descriptions aimed at the agent reading them. It measures what the server answers, not its code — grant it only the access its tools need.

Price is per tool, not per server. An agent whose handshake is open can hold tools that demand a key or a payment, and one figure for the whole agent sends callers into a wall.

• get_checklist reads open 20h ago

  Read-only. Return a Markdown checklist of spec items grouped by category, optionally filtered by category and/or status. Built for site audits — each item is a tickable line with status and canonical URL. Returns all statuses unless `status` is passed. No side effects; items are grouped by category in canonical order and the output is deterministic. Use `list_topics` instead when you want a flat list rather than grouped checkboxes, or the `audit_url` prompt to drive an actual audit of a target URL.

  mcp-tool

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  {
    "type": "object",
    "properties": {
      "status": {
        "enum": [
          "required",
          "recommended",
          "optional",
          "avoid"
        ],
        "type": "string",
        "description": "Filter by spec status tier. `required` = the web-platform contract breaks or a clear class of users is harmed without it. `recommended` = a modern site should do it. `optional` = context-dependent. `avoid` = outdated, harmful, or superseded. Omit to include all four tiers. Example: `required`."
      },
      "category": {
        "enum": [
          "foundations",
          "seo",
          "accessibility",
          "security",
          "well-known",
          "agent-readiness",
          "performance",
          "privacy",
          "resilience",
          "i18n"
        ],
        "type": "string",
        "description": "Filter to a single top-level category. Call `get_categories` for the list with descriptions and topic counts. Omit to include all ten categories. Example: `seo`."
      }
    }
  }

  arguments 31 lines copy
• list_topics reads open 16h ago

  Read-only. Return the canonical list of spec topics, optionally narrowed by category and/or status, each with title, status, category, summary, and URL. Returns ALL statuses unless `status` is passed; omitting `limit` returns every matching topic. No side effects; results are deterministic and returned in canonical spec order (by category, then page order). This is the right tool when you want a complete, unranked index (e.g. "every required SEO topic"). Use `search` instead for relevance-ranked keyword lookup, `get_checklist` for audit-style grouped output, and `get_topic` to fetch one page in full.

  mcp-tool

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  {
    "type": "object",
    "properties": {
      "limit": {
        "type": "integer",
        "maximum": 200,
        "minimum": 1,
        "description": "Maximum number of topics to return after filtering. Omit to return every matching topic; clamped to 1–200 when given."
      },
      "status": {
        "enum": [
          "required",
          "recommended",
          "optional",
          "avoid"
        ],
        "type": "string",
        "description": "Filter by spec status tier. `required` = the web-platform contract breaks or a clear class of users is harmed without it. `recommended` = a modern site should do it. `optional` = context-dependent. `avoid` = outdated, harmful, or superseded. Omit to include all four tiers. Example: `required`."
      },
      "category": {
        "enum": [
          "foundations",
          "seo",
          "accessibility",
          "security",
          "well-known",
          "agent-readiness",
          "performance",
          "privacy",
          "resilience",
          "i18n"
        ],
        "type": "string",
        "description": "Filter to a single top-level category. Call `get_categories` for the list with descriptions and topic counts. Omit to include all ten categories. Example: `seo`."
      }
    }
  }

  arguments 37 lines copy
• get_categories reads open 20h ago

  Read-only. List the ten top-level spec categories with their summaries and topic counts. Takes no arguments. No side effects; categories are returned in canonical display order. Call this first to discover the valid `category` filter values used by `list_topics`, `get_checklist`, and `search` results.

  mcp-tool

  1234

  {
    "type": "object",
    "properties": {}
  }

  arguments 4 lines copy
• get_changes reads open 20h ago

  Read-only. Return the spec's change history — new pages, status promotions/downgrades, substantive rewrites, and removals — newest first, each resolved to the current topics it affects (slug, title, current status, category, URL). This is the delta tool for a returning agent: pass `since` (the date you last audited a site) to get only what has changed, then re-audit just those topics instead of the whole spec. Omit `since` to get the most recent entries. The spec is hand-curated and typed (added/changed/status/removed), so this is a precise signal, not a raw timestamp diff. The same history is published as an RSS feed at https://specification.website/changelog/rss.xml for out-of-band polling. A sensible re-check cadence is monthly, or whenever you start a fresh audit.

  mcp-tool

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  {
    "type": "object",
    "properties": {
      "type": {
        "enum": [
          "added",
          "changed",
          "status",
          "removed"
        ],
        "type": "string",
        "description": "Filter to one kind of change. `added` = a new spec page or category. `status` = a topic promoted or downgraded between tiers. `changed` = a substantive rewrite of an existing page. `removed` = a page that was live and has been deleted. Omit to include all four kinds."
      },
      "limit": {
        "type": "integer",
        "maximum": 100,
        "minimum": 1,
        "description": "Maximum number of change entries to return, newest first. Defaults to 20 when `since` is omitted, or up to 100 within a `since` window; clamped to 1–100."
      },
      "since": {
        "type": "string",
        "description": "Return only changes on or after this date (ISO `YYYY-MM-DD`; longer ISO datetimes are accepted and truncated to the day). Typically the date of your last audit. Omit to get the most recent changes regardless of date. Example: `2026-05-01`."
      }
    }
  }

  arguments 25 lines copy
• get_topic reads unknown 16h ago

  Read-only. Fetch the full canonical Markdown for a single spec page by its slug: YAML frontmatter (title, status, category, sources, related slugs) plus the rendered body. Use this once you have a slug from `search` or `list_topics`. If you only have keywords, call `search` first.

  mcp-tool

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  {
    "type": "object",
    "required": [
      "slug"
    ],
    "properties": {
      "slug": {
        "type": "string",
        "minLength": 1,
        "description": "Kebab-case slug, as listed by `list_topics` or `search`. Matched case-insensitively, with close-match suggestions on miss. Examples: `content-security-policy`, `meta-robots`, `llms-txt`."
      }
    }
  }

  arguments 13 lines copy
• search reads unknown 16h ago

  Read-only, deterministic full-text search across every spec page. Ranks pages by weighted keyword matches in title, slug, summary, and body, and returns the top results with status, category, canonical URL, Markdown URL, and matching body excerpts. No side effects and no live-web access — it queries an in-memory snapshot bundled at build time, so it returns in well under a millisecond. Use this for keyword/topic lookups when you do NOT already know the slug. Prefer `list_topics` when you want the complete, unranked set of pages matching a category/status filter; prefer `get_topic` when you already know the exact slug.

  mcp-tool

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  {
    "type": "object",
    "required": [
      "query"
    ],
    "properties": {
      "limit": {
        "type": "integer",
        "default": 5,
        "maximum": 25,
        "minimum": 1,
        "description": "Maximum number of ranked results to return. Defaults to 5; clamped to 1–25."
      },
      "query": {
        "type": "string",
        "minLength": 1,
        "description": "Free-text query, matched case-insensitively as substrings (not whole words). Split on whitespace; tokens shorter than 2 characters are ignored, so single-letter terms match nothing. Punctuation other than / _ . - is treated as a separator. Each token is scored against title, slug, summary, and body. Example: `content security policy` or `alt text`."
      }
    }
  }

  arguments 20 lines copy

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