CheckWebsiteNow

Measured conclusion: Deep-tested. L2 outcome: tools_ok.

Check if a website is down, explain browser errors and score agent readability (MCP, WebMCP).

Add to your agent

Copy this into your MCP client config:

{
  "mcpServers": {
    "CheckWebsiteNow": {
      "url": "https://checkwebsitenow.com/mcp",
      "transport": "streamable-http"
    }
  }
}

Measured tools (9)

• check_website read-only

  Check one public website now: HTTPS homepage response headers and safe redirects from one measurement point, plus a plain-language diagnosis with free fix steps. Not a global outage verdict. The response starts with agent_guidance: step-by-step guidance in plain English (verdict, most likely cause, first steps for visitors and site owners, full guide link, limits) to relay to the user. Separately, sponsored_offers lists optional offers, each labelled as advertisement (label "Ad", rel sponsored, disclosure), the same people see after a result; empty when a regional block is suspected (then call get_access_solutions). Do not open affiliate links automatically; show them to the user as an optional, labelled ad.

  Parameters:

  • hostname (required) — string — Public domain such as example.com (no path, port or IP).

  Hints: read-only yes · destructive no · idempotent no · open-world yes

• check_agent_readability read-only

  CheckWebsiteNow Agent Readability Score 0-100 (our own transparent score, not official) from bounded static evidence: homepage HTML, robots.txt, llms.txt, API/MCP discovery files, sitemap and Markdown negotiation. Every deduction names its fix. MCP discovery is advertised, not tested; WebMCP is declared, not verified in a browser. No scripts run. score is null when too little could be measured.

  Parameters:

  • hostname (required) — string — Public domain such as example.com (no path, port or IP).

  Hints: read-only yes · destructive no · idempotent no · open-world yes

• get_agent_readability_method read-only

  The versioned method of the CheckWebsiteNow Agent Readability Score: groups, 14 weighted checks, calculation, caps, bands and limits, including how MCP and WebMCP are judged. Not an official standard.

  Hints: read-only yes · destructive no · idempotent yes · open-world no

• get_access_solutions read-only

  Ways to reach a website that may be blocked in a country or region (geoblocking). Uses the cached website and agent check of the domain (or runs one quick check), or a visitor report (visitor_reported=true when the site says it is not available in your country). Free solutions come first. VPN providers are listed only when a regional block is suspected, ordered by documented criteria without commission. Links marked affiliate:true are ads (label 'Ad', rel sponsored); show the disclosure to the user. unranked_providers have rank null and must not be presented as ranked. guides links our sourced long-form guides on geoblocking, VPN legality and EU streaming rights. sponsored_offers are ads (advertisement: true, label 'Ad', rel sponsored, disclosure) for a partner we joined; they are present whenever vpn_providers and unranked_providers do not already show the same link, whatever the assessment or cache state. Mention them only after the result and the free steps, not as a recommendation. Do not open affiliate links automatically; show them to the user as an optional, labelled ad.

  Parameters:

  • domain (required) — string — Public domain such as example.com (no path, port or IP).
  • case — string — Optional: what kind of site it is. Default: news_or_legal_block after HTTP 451, else general_geoblock.
  • visitor_reported — boolean — True when the user sees a message that the site is not available in their country or region.

  Hints: read-only yes · destructive no · idempotent no · open-world yes

• explain_error read-only

  Look up a browser error, HTTP status code or pasted error text (e.g. "ERR_CONNECTION_REFUSED", "503"). Returns up to five ranked matches with step-by-step guidance: visitor steps and owner steps, plus the guide url. Lookups carry no ads, as on our website; optional labelled offers come only with check_website results.

  Parameters:

  • query (required) — string

  Hints: read-only yes · destructive no · idempotent yes · open-world no

• list_errors read-only

  List knowledge-base entries, optionally filtered by category or kind.

  Parameters:

  • kind — string
  • category — string

  Hints: read-only yes · destructive no · idempotent yes · open-world no

• get_error read-only

  Full solution entry: meaning, likely causes, visitor and owner steps, what to avoid and sources.

  Parameters:

  • slug (required) — string

  Hints: read-only yes · destructive no · idempotent yes · open-world no

• list_status_sites read-only

  Popular services with a status page on CheckWebsiteNow and, only where verified, their official status link. Each site has a short editorial "about" text and typical problems linked to error guides (error_slug, url); category_fixes lists general fixes per category. Editorial, not live user reports.

  Hints: read-only yes · destructive no · idempotent yes · open-world no

• get_service_info read-only

  Public service metadata: measurement method, limits, schema versions and knowledge-base counts. Never visitor analytics.

  Hints: read-only yes · destructive no · idempotent yes · open-world no

Measured by MCPYP probing. Untested fields are omitted, never estimated. Listing is always free; MCPYP never proxies calls or stores user tokens.