lseg.com

AI agents struggle to discover documentation and APIs due to missing sitemap.xml, llms.txt, and inadequate homepage guidance for automated navigation.

13 pass · 9 warn · 3 fail · 16 n/a

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Discovery

14.8/22.2

Accessibility

25.8/33.3

Usability

22.2/44.4

Payments

n/a

Discovery 14.8/22.2

Documentation linked from the homepagedetailsFAIL
no link to documentation found in the homepage HTML
Fix: Link your docs from the homepage with visible anchor text ("Docs", "Documentation", "Developers"). An agent that cannot find your docs from your homepage will guess your API.
sitemap.xml exists and parsesdetailsFAIL
sitemap.xml not served (HTTP 404)
Fix: Publish /sitemap.xml listing your public pages, and reference it from robots.txt with a `Sitemap:` line.
API reference linked from the homepagedetailsWARN
no link to an API reference in the homepage HTML

Badge

Shows the current scan score and grade for this domain, straight from the latest static pre-check.

[![agent ready](/api/badge/lseg.com)](/score/lseg.com)

<a href="/score/lseg.com"><img src="/api/badge/lseg.com" alt="agent readiness score" /></a>

Fix: If you have an API, link its reference from the homepage. If you don't, this check is safe to ignore.

Canonical URL declareddetailsPASS

https://www.lseg.com/en

Homepage has a meta descriptiondetailsPASS

128 characters

Homepage has a descriptive titledetailsPASS

'Financial Markets Infrastructure and Data | LSEGarrow-rightarrow-right' (70 chars)

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, 2910 bytes

robots.txt points at the sitemapdetailsPASS

robots.txt has a Sitemap: line

Listed in the official MCP registrydetailsN/A

site advertises no MCP endpoint — a registry listing is not expected

Accessibility 25.8/33.3

llms.txt is publisheddetailsFAIL
/llms.txt not served (HTTP 404)
Fix: Publish /llms.txt: a plain-markdown index that tells an agent what this product is and where the authoritative docs live. It is the cheapest high-leverage file you can add.
llms-full.txt is publisheddetailsWARN
/llms-full.txt not served
Fix: Optional but cheap: publish /llms-full.txt with your docs inlined as one markdown file, so an agent can read everything in a single fetch.
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 0.0354 — 3902 readable chars in 110218 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.
Homepage responds to an agent requestdetailsPASS
HTTP 200 for / (agent UA)
Served over HTTPSdetailsPASS
https://www.lseg.com/en
Structured data (JSON-LD) on the homepagedetailsPASS
1 valid block(s) (BreadcrumbList)
Same response for agents and browsersdetailsPASS
both User-Agents got HTTP 200
Homepage has readable text without JavaScriptdetailsPASS
3902 characters of text in the served HTML
No long redirect chain on the homepagedetailsPASS
2 redirect(s)
Docs are readable without JavaScriptdetailsN/A
/docs not served (HTTP 404) — docs may live on another path or host
Links in llms.txt resolvedetailsN/A
no llms.txt
llms.txt is structured markdowndetailsN/A
no llms.txt to parse

Usability 22.2/44.4

agents.md is publisheddetailsWARN
/agents.md not served (HTTP 404)
Fix: Publish /agents.md: what an agent may do here, which endpoints matter, auth requirements, and rate limits. It is the agent-facing counterpart to a README.
A documentation endpoint respondsdetailsWARN
/docs → HTTP 404
Fix: Serve docs at the conventional /docs path, or redirect it to wherever they live. Agents try conventional paths first.
Errors are machine-readabledetailsWARN
404 returns HTML, not a machine-readable body
Fix: Content-negotiate your errors: return a JSON body with a stable `code` (and a `next_action` where recovery exists) to clients that ask for JSON.
OpenAPI document publisheddetailsWARN
/openapi.json not served (HTTP 404)
Fix: If you have an HTTP API, publish its OpenAPI document at a predictable path (/openapi.json). It is the difference between an agent reading your contract and an agent guessing it. If you have no HTTP API, ignore this.
.well-known/mcp.json advertises an MCP serverdetailsWARN
/.well-known/mcp.json not served (HTTP 404)
Fix: If you run an MCP server, advertise it at /.well-known/mcp.json so agents discover it without being told its URL.
The /api root behaves predictablydetailsN/A
/api → HTTP 404 (no API at the conventional root)
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
OpenAPI declares its auth schemedetailsN/A
no parseable OpenAPI document
OpenAPI operations are describeddetailsN/A
no parseable OpenAPI document
OpenAPI documents error responsesdetailsN/A
no parseable OpenAPI document
OpenAPI document is structurally validdetailsN/A
no parseable OpenAPI document

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.