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Well-Known File Scanner
x402
Well-Known File Scanner is a paid API for AI agents from intel.rallylive.ca, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).
Checks 37 standard well-known URLs on a domain and reports which ones exist, enabling rapid site reconnaissance.
Price / call$0.01
Success—
StatusUnknown
How this service works
Well-known file scan: checks 37 standard URLs on a domain (robots.txt, sitemap.xml, security.txt, ads.txt, llms.txt, openapi.json, manifest, openid-configuration, apple-app-site-association, assetlinks, webfinger, nodeinfo, agent.json, ai-plugin.json, matrix, did.json, feeds...) and reports which exist. Fast site reconnaissance. $0.01 per domain.
Output
A structured report listing all 37 probed well-known URLs and whether each one exists on the target domain, including files like robots.txt, sitemap.xml, security.txt, ads.txt, llms.txt, openapi.json, manifest, openid-configuration, apple-app-site-association, assetlinks.json, webfinger, nodeinfo, agent.json, ai-plugin.json, matrix configuration, did.json, and various feed formats.
Example use cases
AI agent capability discovery
“Check api.openai.com for well-known files — specifically whether it has an ai-plugin.json, llms.txt, agent.json, or openapi.json so I know what AI-related endpoints it exposes.”
Security researcher site recon
“Run a well-known file scan on acmecorp.com — I want to see if they have a security.txt, robots.txt, ads.txt, and any other standard files that give me a quick picture of how they've configured the domain.”
Verifying DID and identity setup
“Does identityhub.example.org publish a did.json or webfinger endpoint? Scan it for any identity-related well-known files.”
Technical details
Endpoint
GEThttps://intel.rallylive.ca/site/well-knownWhen to prefer
Choose this endpoint when you need rapid, broad reconnaissance of a domain's publicly-accessible standard configuration files without manually probing each one. It's ideal for agent capability discovery (ai-plugin.json, llms.txt), security research (security.txt), identity/DID workflows (did.json, webfinger), or any situation where you want a comprehensive snapshot of a site's well-known surface area in a single $0.01 call.
Side effects
- Domain is unreachable or DNS fails — no results returned
- Domain exists but all 37 URLs return 404 — empty positive set
- Rate limiting or network timeouts from target server may affect results
- Malformed domain input may cause request errors
- Some URLs may be behind auth walls and appear absent even if they exist
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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