Agent-Readiness Grade

Agent-Readiness Grade / plos.org

C

plos.org

8/12 · 67% (scaled from 5 measurable areas)

Graded 2026-09-30 15:47 UTC in 1.5s · JSON · re-grade now

Top fixes

  1. MCP census entry (+2 points): Expose a Streamable HTTP MCP endpoint at /mcp (or a paid x402 route) so agents can call you, not just read you. How to fix
  2. 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.

plos.org is graded C. The $49 AI Visibility Full Report turns the failing check above (machine-readable surfaces) into a prioritized, specific fix list for plos.org, 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)

2/2 · pass

8 of 8 AI crawlers may read the site, 0 disallowed

  • GET /robots.txt -> HTTP 200, 166 B, 1 user-agent group
  • Allowed: GPTBot (via *), ClaudeBot (via *), OAI-SearchBot (via *), PerplexityBot (via *), Google-Extended (via *), Amazonbot (via *), CCBot (via *), Bytespider (via *)
  • Sitemap declared: https://plos.org/sitemap_index.xml

Fix: Nothing to fix here.

Machine-readable surfaces

1/2 · warn

1 of 7 surfaces present (/sitemap.xml)

  • /llms.txt: HTTP 404
  • /sitemap.xml: HTTP 200, sitemap index (2.3 KB)
  • /.well-known/x402: HTTP 404
  • /.well-known/agent-card.json: HTTP 404
  • /.well-known/mcp-registry-auth: HTTP 404
  • /openapi.json: HTTP 404
  • /ai.txt: HTTP 404

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

2/2 · pass

Home page is readable

  • GET https://plos.org/ -> HTTP 200, text/html, 249 KB
  • 4,632 characters of visible text with scripts, styles and tags removed; <title>: "Leading the future of open science publishing - PLOS"
  • 18 external scripts, 17 inline; <noscript> absent
  • first words: "Skip to content About Our mission and vision Research integrity and publication ethics Sustainability The Executive Team The Board of Direct..."

Fix: Nothing to fix here.

Structured data

2/2 · pass

1 JSON-LD block, Open Graph complete

  • 1 JSON-LD block: @type WebPage, ImageObject, BreadcrumbList, ListItem, WebSite, Organization
  • Open Graph: og:title "Leading the future of open science publishing - PLOS"; og:description present
  • meta description: present

Fix: Nothing to fix here.

MCP census entry (index.agentexchange.work)

0/2 · fail

Not selling to agents: no census entry, no /mcp endpoint

  • 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 404: no MCP endpoint at the root

Fix: Expose a Streamable HTTP MCP endpoint at /mcp (or a paid x402 route) so agents can call you, not just read you.

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

https://grade.agentexchange.work/grade?url=plos.org

Public profile with grade history and an embeddable badge: https://grade.agentexchange.work/site/plos.org (badge: https://grade.agentexchange.work/badge/plos.org.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 plos.org. 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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