Agent-Readiness Grade

Agent-Readiness Grade / downdetector.com

D

downdetector.com

5/12 · 42% (scaled from 4 measurable areas)

Graded 2026-10-18 22:20 UTC in 0.3s · JSON · re-grade now

Top fixes

  1. Readable without JavaScript (+2 points): Your edge serves a challenge or error to non-browser fetchers; allowlist the AI crawlers you want (at least for the home page) or serve them a static version. How to fix
  2. Crawler access (+1 point): Add a group for Google-Extended with "Allow: /" (or drop the blanket "Disallow: /") if you want answer engines to cite you. How to fix
  3. Machine-readable surfaces (+1 point): Publish /llms.txt (a short Markdown guide to your key pages); one agent surface: /openapi.json, /.well-known/agent-card.json, or /.well-known/x402 if you sell to agents. How to fix

Ordered by points recoverable. Each area: 2/2 pass, 1/2 warn, 0/2 fail.

downdetector.com is graded D. The $49 AI Visibility Full Report turns the 2 failing checks above (crawler access, machine-readable surfaces) into a prioritized, specific fix list for downdetector.com, and tests 8 real buyer questions across ChatGPT-class models to show what AI answers say about you today.

Get the full report — $49 Stripe checkout asks for your brand name and category; the report is ready about 60 seconds after payment. Legal notices and the MCP census entry are not in this report (free: Compliance Desk check, census claim).

Crawler access (robots.txt)

1/2 · warn

7 of 8 AI crawlers may read the site, 1 disallowed

  • GET /robots.txt -> HTTP 200, 1.6 KB, 37 user-agent groups
  • Allowed: GPTBot, ClaudeBot, OAI-SearchBot, PerplexityBot, Amazonbot, CCBot, Bytespider
  • Disallowed: Google-Extended (via *)
  • "User-agent: *" disallows the whole site; only crawlers named explicitly may read it
  • Sitemap declared: https://downdetector.com/sitemap.xml

Fix: Add a group for Google-Extended with "Allow: /" (or drop the blanket "Disallow: /") if you want answer engines to cite you.

Machine-readable surfaces

1/2 · warn

None of the 7 machine-readable surfaces is published (a sitemap is declared in robots.txt)

  • /llms.txt: HTTP 403
  • /sitemap.xml: HTTP 403
  • /.well-known/x402: HTTP 403
  • /.well-known/agent-card.json: HTTP 403
  • /.well-known/mcp-registry-auth: HTTP 403
  • /openapi.json: HTTP 403
  • /ai.txt: HTTP 403
  • Sitemap declared in robots.txt instead: https://downdetector.com/sitemap.xml

Fix: Publish /llms.txt (a short Markdown guide to your key pages); one agent surface: /openapi.json, /.well-known/agent-card.json, or /.well-known/x402 if you sell to agents.

Readable without JavaScript

0/2 · fail

Home page is blocked by a bot challenge (HTTP 403)

  • GET https://downdetector.com/ -> HTTP 403, text/html, 4.4 KB
  • <title>: "Downdetector"

Fix: Your edge serves a challenge or error to non-browser fetchers; allowlist the AI crawlers you want (at least for the home page) or serve them a static version.

Structured data

not measured

Home page returned HTTP 403 (challenge); structured data not measurable

  • GET https://downdetector.com/ -> HTTP 403, text/html

Fix: Let non-browser fetchers reach the home page first.

MCP census entry (index.agentexchange.work)

1/2 · warn

Exposes /mcp but is not in the census

  • census unavailable (refused index.agentexchange.work: hosts on agentexchange.work cannot be graded from inside the same Cloudflare zone; every check would time )
  • GET /mcp -> HTTP 403 (text/html): an endpoint answers
  • Index MCP probe record: refused index.agentexchange.work: hosts on agentexchange.work cannot be graded from inside the same Cloudflare zone; every check would time

Fix: Publish /.well-known/x402 with your paid routes so payment indexers can list you.

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Permanent link; it re-grades the site live when opened:

https://grade.agentexchange.work/grade?url=downdetector.com

Public profile with grade history and an embeddable badge: https://grade.agentexchange.work/site/downdetector.com (badge: https://grade.agentexchange.work/badge/downdetector.com.svg).

$49 AI Visibility Full Report

This grade is free and automated. The paid next step is the $49 AI Visibility Full Report (which brands a representative AI model, standing in for ChatGPT-class assistants, names when buyers ask about your category, with a prioritized fix list) from aivisibility.agentexchange.work, run for downdetector.com. It includes:

Get the Full Report — $49 Stripe checkout asks for your brand name and category; the report is ready about 60 seconds after payment. Legal notices and the MCP census entry are not in this report (free: Compliance Desk check, census claim).

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