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A88/100

Static pre-check · Fri, 07 Aug 2026 06:49:39 GMT

openrouter.ai

AI agents can navigate OpenRouter's LLM interface well, but the missing MCP server advertisement blocks proper tool discovery and integration.

27 pass · 5 warn · 1 fail · 9 n/a

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Discovery
21.1/22.2
Accessibility
31.2/33.3
Usability
35.8/44.4
Payments
n/a

Discovery 21.1/22.2

  • Homepage has a descriptive titledetailsWARN

    title is 82 characters (truncated in most surfaces)

    Fix: Trim the <title> to 70 characters or fewer so it is not cut off.

  • API reference linked from the homepagedetailsPASS

    1 API link(s), e.g. /docs/api_reference/overview

  • Canonical URL declareddetailsPASS

    https://openrouter.ai

  • Documentation linked from the homepagedetailsPASS

    5 docs link(s), e.g. /docs/quickstart

  • Homepage has a meta descriptiondetailsPASS

    78 characters

  • Open Graph tags presentdetailsPASS

    og:title and og:description present

  • robots.txt allows agent crawlersdetailsPASS

    all 6 agent crawlers may fetch /

  • robots.txt existsdetailsPASS

    HTTP 200, 83 bytes

  • robots.txt points at the sitemapdetailsPASS

    robots.txt has a Sitemap: line

  • sitemap.xml exists and parsesdetailsPASS

    6174 URL(s) listed

  • Brand findable in agent searchdetailsN/A

    search-based checks are deferred — excluded from the score

  • Listed in an MCP registrydetailsN/A

    registry lookup not implemented in v1 — excluded from the score rather than guessed

Accessibility 31.2/33.3

  • Serves markdown when asked for itdetailsWARN

    Accept: text/markdown → text/html; charset=utf-8

    Fix: Optional but increasingly expected: honour `Accept: text/markdown` by serving a markdown rendering of the page, so agents skip HTML parsing entirely.

  • Content-to-markup ratio is reasonabledetailsWARN

    ratio 0.0118 — 2828 readable chars in 239876 bytes of HTML

    Fix: Most of what you serve is markup and inline script rather than content. Reduce inline payloads or server-render more text so the signal-to-noise ratio favours readers.

  • Docs are readable without JavaScriptdetailsPASS

    9741 characters of text at /docs

  • Homepage responds to an agent requestdetailsPASS

    HTTP 200 for / (agent UA)

  • Served over HTTPSdetailsPASS

    https://openrouter.ai/

  • Structured data (JSON-LD) on the homepagedetailsPASS

    2 valid block(s) (Organization, WebSite)

  • llms-full.txt is publisheddetailsPASS

    HTTP 200, 2000000 bytes

  • llms.txt is publisheddetailsPASS

    HTTP 200, 44089 bytes

  • Links in llms.txt resolvedetailsPASS

    5 sampled link(s) all resolve

  • llms.txt is structured markdowndetailsPASS

    has headings and markdown links

  • Same response for agents and browsersdetailsPASS

    both User-Agents got HTTP 200

  • Homepage has readable text without JavaScriptdetailsPASS

    2828 characters of text in the served HTML

  • No long redirect chain on the homepagedetailsPASS

    0 redirect(s)

Usability 35.8/44.4

  • .well-known/mcp.json advertises an MCP serverdetailsFAIL

    /.well-known/mcp.json is served but is not valid JSON

    Fix: Fix the JSON at /.well-known/mcp.json — as served it cannot be parsed, so the advertisement does nothing.

  • The /api root behaves predictablydetailsWARN

    /api → HTTP 200 text/html; charset=utf-8

    Fix: Serve JSON from API paths, with an accurate content-type.

  • Errors are machine-readabledetailsWARN

    a nonexistent path returned HTTP 200, not 404

    Fix: Return 404 for paths that do not exist. A 200 on a missing page makes an agent believe it found something.

  • agents.md is publisheddetailsPASS

    HTTP 200, 6305 bytes

  • A documentation endpoint respondsdetailsPASS

    /docs → HTTP 200

  • OpenAPI declares its auth schemedetailsPASS

    2 scheme(s): apiKey, bearer

  • OpenAPI operations are describeddetailsPASS

    96/96 operations described (100%)

  • OpenAPI document publisheddetailsPASS

    HTTP 200, 1741094 bytes of JSON

  • OpenAPI documents error responsesdetailsPASS

    435 error response(s) with a schema

  • OpenAPI document is structurally validdetailsPASS

    OpenAPI 3.1.0, 72 path(s)

  • MCP server completes the initialize handshakedetailsN/A

    no MCP endpoint found to probe (none in the input URL and none advertised at /.well-known/mcp.json)

  • MCP tool parameters are typed and describeddetailsN/A

    no listed MCP tools to inspect

  • Every MCP tool has a descriptiondetailsN/A

    no listed MCP tools to inspect

  • MCP server lists toolsdetailsN/A

    no MCP endpoint to probe

Payments not applicable — excluded from the score

  • Serves a 402 payment challengedetailsN/A

    no agent-payment rail published — not applicable. This layer is excluded from the score rather than counted against the site.

  • Declares AP2 / ACP supportdetailsN/A

    no agent-payment rail published — not applicable. This layer is excluded from the score rather than counted against the site.

  • Publishes x402 payment metadatadetailsN/A

    no agent-payment rail published — not applicable. This layer is excluded from the score rather than counted against the site.

Badge

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