SiteCheck llms.txt Reader

x402

SiteCheck llms.txt Reader is a paid API for AI agents from api.sitecheck-api.workers.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-28).

Fetches and parses the llms.txt (and llms-full.txt) file from a given website, returning structured AI-readable documentation metadata including title, summary, and section links.

Price / call$0.002

Seller volume →—

Success—

StatusUnknown

How this service works

Whether a site publishes /llms.txt and /llms-full.txt: the parsed llms.txt (title, summary, sections with their links) and the size of llms-full.txt. Reads the site itself, through the same URL guard and size cap as the page tools.

Output

Returns a JSON object containing the target site URL, the source URLs where llms.txt and/or llms-full.txt were found, and a structured llmsTxt object with: existence flag, byte size, title, summary, and an array of named sections each containing titled links with URLs and optional notes.

Example use cases

Discover AI docs for developer portal

“Go fetch the llms.txt from https://platform.openai.com and show me all the section names and their links so I know what documentation is available for AI agents.”

Check if a site supports llms.txt

“Does https://docs.stripe.com have an llms.txt file? If so, what's its title and summary, and how many sections does it have?”

Build documentation index for agent

“Pull the llms.txt from https://supabase.com and give me a structured list of all the documentation links organized by section — I want to feed them to my agent for RAG.”

Technical details

Endpoint

GEThttps://api.sitecheck-api.workers.dev/api/llms-txt?utm_source=zero.xyz

When to prefer

Use this endpoint when you need to programmatically discover and consume AI-readable documentation from a website that follows the llms.txt standard. Prefer it over general web scraping when the goal is specifically to index or navigate a site's structured AI documentation sections, or when building a retrieval pipeline that needs canonical doc links organized by topic.

Side effects

Site does not have an llms.txt file — exists field returns false
Invalid or unreachable URL — network error or timeout
URL missing https:// scheme — query param validation failure
Site returns llms.txt but it is malformed or unparseable — partial or empty sections
Rate limiting or Cloudflare Worker errors — HTTP 429 or 5xx

Input

Schema · Request body

Field	Type	Description
inputrequired	object
output	object

Output

Schema · Response

{
  "type": "json",
  "example": {
    "site": "https://developers.cloudflare.com",
    "source": "https://developers.cloudflare.com/llms.txt, https://developers.cloudflare.com/llms-full.txt",
    "llmsTxt": {
      "bytes": 16925,
      "title": "Cloudflare Developer Documentation",
      "exists": true,
      "summary": "Each product below links to its own llms.txt, which contains a full index of that product's documentation pages and is the recommended way to explore a specific product's content.",
      "sections": [
        {
          "name": "Application performance",
          "links": [
            {
              "url": "https://developers.cloudflare.com/argo-smart-routing/llms.txt",
              "note": "Route web traffic across the fastest, most reliable network paths",
              "title": "Argo Smart Routing"
            },
            {
              "url": "https://developers.cloudflare.com/automatic-platform-optimization/llms.txt",
              "note": "Improve WordPress site performance by serving it from Cloudflare's global network",
              "title": "Automatic Platform Optimization"
            },
            {
              "url": "https://developers.cloudflare.com/cache/llms.txt",
              "note": "Make websites faster by caching content across our global server network",
              "title": "Cache / CDN"
            }
          ]
        },
        {
          "name": "Application security",
          "links": [
            {
              "url": "https://developers.cloudflare.com/api-shield/llms.txt",
              "note": "Identify and address your API vulnerabilities",
              "title": "API Shield"
            },
            {
              "url": "https://developers.cloudflare.com/bots/llms.txt",
              "note": "Protect your domain from bad bot traffic",
              "title": "Bots"
            },
            {
              "url": "https://developers.cloudflare.com/cloudflare-challenges/llms.txt",
              "note": "Verify visitors are not bots with lightweight challenges",
              "title": "Challenges"
            }
          ]
        },
        {
          "name": "Cloudflare One",
          "links": [
            {
              "url": "https://developers.cloudflare.com/mesh/llms.txt",
              "note": "Connect services and devices with post-quantum encrypted mesh networking",
              "title": "Cloudflare Mesh"
            },
            {
              "url": "https://developers.cloudflare.com/cloudflare-network-firewall/llms.txt",
              "note": "Protect your enterprise network with advanced firewall-as-a-service protection",
              "title": "Cloudflare Network Firewall"
            },
            {
              "url": "https://developers.cloudflare.com/cloudflare-one/llms.txt",
              "note": "Replace legacy security perimeters with Cloudflare's network to protect your organization",
              "title": "Cloudflare One"
            }
          ]
        }
      ]
    },
    "llmsFull": {
      "bytes": 300000,
      "exists": true,
      "truncated": true
    },
    "checkedAt": "2026-10-14T07:00:49.304Z"
  }
}

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