Plainport

Reliability

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How to connect

Add it to any MCP client that supports remote servers.

{
  "mcpServers": {
    "plainport": {
      "type": "http",
      "url": "https://plainport.exportitnow.workers.dev/mcp"
    }
  }
}

10 tools

• fetch_markdown

  Fetches one public HTTP/HTTPS page and returns its primary readable content as Markdown. Use this for article or documentation body text without page chrome. It does not run JavaScript; use a browser tool for client-rendered pages. Native text/markdown responses are preserved…

• inspect_url

  Resolves a public URL through bounded redirects and returns status plus a safe allowlist of HTTP headers. Use HEAD for cheap reachability/type checks and GET when a server mishandles HEAD. Use extract_metadata for HTML semantic metadata. Limit: 8 s, 5 redirects, 768 KiB only for…

• extract_metadata

  Fetches one public HTML page and extracts title, description, canonical URL, robots directives, Open Graph, Twitter Card, advertised feeds, and parsed JSON-LD. Use this when an agent needs page identity or structured data rather than body text. Limit: 8 s, 5 redirects, 768 KiB…

• extract_links

  Fetches one public HTML page and returns unique normalized HTTP/HTTPS links with anchor text, rel values, and same-origin classification. Use this for bounded navigation discovery; it does not crawl the returned links. Limit: 8 s, 5 redirects, 768 KiB, 500 links.

• parse_feed

  Fetches and normalizes RSS 2.0, Atom 1.0, or JSON Feed into a stable item list. Use this when consuming update feeds without format-specific parsing. It does not fetch linked articles. Limit: 8 s, 5 redirects, 768 KiB, 100 items.

• parse_sitemap

  Fetches one uncompressed XML sitemap and returns either URL entries or child sitemap references. Use this for site structure discovery. Sitemap indexes are not recursively expanded; call this tool on each child explicitly. Limit: 8 s, 5 redirects, 768 KiB, 1,000 entries.

• inspect_robots

  Fetches an origin's robots.txt and evaluates one path for a named user agent using longest-match allow/disallow precedence. Also returns crawl delay and declared sitemaps. Use this before automated retrieval; the result is policy guidance, not authorization. Limit: 8 s, 5…

• html_to_markdown

  Converts supplied HTML into readable Markdown without fetching a URL. Use this when the agent already has HTML. Provide base_url only to resolve relative links; use fetch_markdown when Plainport should retrieve the page. Limit: 200k input characters, 150k output characters.

• diff_text

  Computes a deterministic line- or word-level diff and returns typed add/remove/equal parts. Use this when an agent needs structured change data. Split highly divergent large documents if the computation limit is reached. Limit: 200k combined characters, 2,000 result parts, 8 ms…

• validate_json_schema

  Validates a JSON value against a supplied JSON Schema using draft 4, 7, 2019-09, or 2020-12. Use this to verify generated or extracted structured data. It performs validation only and does not mutate the instance. Limit: 512 KiB request, 40 nesting levels, 100 returned errors.

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