developer.mozilla.org (Docs) was checked on 2026-11-02 by the Tuper Agent-Ready engine (agent.mjs 1): 7 pass, 0 warnings, 2 fail, 12 info.
All 21 checks, with what we found
pass Agents can load your home page
HTTP 200, no bot check.
pass Served over HTTPS
pass AI answer bots may read your pages
robots.txt allows OAI-SearchBot, ChatGPT-User, Claude-SearchBot, Claude-User, PerplexityBot, Perplexity-User.
info, not scored AI training crawlers are not blocked
A choice, not scored: blocking training crawlers does not hide you from AI answers.
pass Your text is in the HTML the server sends
5801 characters without JavaScript (4482 after it runs).
info, not scored No sign-up, login or contact link found on the home page
Nothing to test here. If people sign up elsewhere, link it from the home page.
fail No usable llms.txt
https://developer.mozilla.org/llms.txt: HTTP 404. llms.txt is a short map of your site for AI agents (llmstxt.org). It is a hint, not a ranking factor, but agents that look for it find nothing.
https://developer.mozilla.org/llms.txt
Checked again by hand on the live URL (404): https://developer.mozilla.org/llms.txt
info, not scored No llms-full.txt
Optional: the full text of your docs in one file.
pass sitemap.xml found with dates
Listed in robots.txt.
pass Canonical, description, og:title and lang are set
info, not scored No markdown version of your pages
Optional: a .md copy or Accept: text/markdown answer saves agents parsing HTML.
fail No structured data (JSON-LD)
JSON-LD tells an agent in plain fields who you are and what you sell, with no guessing from the layout.
https://developer.mozilla.org/en-US/
info, not scored No price information found
If you sell something, an Offer with a price lets agents answer "how much?".
pass One main heading (h1)
info, not scored No MCP server card
Optional: only sites with an API or tools for agents need this.
info, not scored No A2A agent card
Optional: only sites with an API or tools for agents need this.
info, not scored No agents.json
Optional: only sites with an API or tools for agents need this.
info, not scored No OpenAPI description
Optional: only sites with an API or tools for agents need this.
info, not scored No API catalog (RFC 9727)
Optional: only sites with an API or tools for agents need this.
info, not scored No AGENTS.md
Optional: only sites with an API or tools for agents need this.
info, not scored No Content-Signal in robots.txt
Optional: states how AI may use your content (contentsignals.org).
Date and method
Run 2026-11-02T10:52:14Z UTC, one request set per site: home page, robots.txt, llms.txt, sitemap, up to 3 sign-up/login/contact links and /.well-known agent cards. Our agent names itself TuperAgentCheck-bot, never submits a form and never solves a captcha. Score: Access 45, Discovery 25, Understanding 20, Agent tools 10. This page shows the stored run and is not re-scored by hand; a rate limit or busy server is shown as "could not read". The site may have changed since. Raw data: data.json. Wrong? Mail support@tuper.app and we re-run it.