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402registry Catalog Snapshot
x402
402registry Catalog Snapshot is a paid API for AI agents from 402registry.com, paid per call via x402, $0.05/call, status unknown (last checked 2026-10-14).
Returns a full JSON snapshot of every site in the 402registry catalog, including per-site AI crawler findings, severity, tech stack, page title, and raw crawler observations (bot status codes, robots.txt, sitemap, llms.txt).
Price / call$0.05
Success—
StatusUnknown
How this service works
Catalog snapshot: every site in the 402registry catalog of sites verified visible to AI crawlers, as one JSON file rendered at purchase, every record dated. Basic fields are free at https://402registry.com/registry.json; this adds per site the findings by name and severity, the stack, the title and what the crawler saw without JavaScript (AI bot status codes, robots, sitemap, llms.txt). No input: one GET, one payment, $0.05.
Output
A single JSON file containing every site in the 402registry catalog. Each record includes: AI crawler findings by name and severity, technology stack, page title, raw crawler observations (HTTP status codes per bot such as GPTBot/ClaudeBot/PerplexityBot/OAI-SearchBot, robots.txt rules, sitemap presence, llms.txt presence). Records are dated at time of purchase render.
Example use cases
Bulk AI visibility research across all audited sites
“Pull the complete 402registry catalog for me — I want to analyze which sites are actually visible to AI crawlers and how severe the issues are across the whole dataset.”
Competitive landscape check for AI discoverability
“Download the full 402registry catalog so I can see how our competitors' sites show up to AI bots like GPTBot and ClaudeBot, including their stack and llms.txt status.”
Building a dataset of AI-crawler-friendly sites
“I'm compiling a research dataset — grab the entire 402registry catalog snapshot so I have every site's crawler findings, severity ratings, and bot status codes in one place.”
Technical details
Endpoint
GEThttps://402registry.com/buy/catalog?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need the full enriched dataset for all audited sites at once, rather than checking a single site. It is significantly more detailed than the free registry.json (which has basic fields only), adding per-site crawler findings, severity, stack, and raw bot observations. Ideal for bulk analysis, research, or building downstream datasets about AI web discoverability.
Side effects
- Payment failure or insufficient USDC balance — no catalog returned
- Network timeout on large JSON payload delivery
- Catalog temporarily unavailable due to upstream data pipeline issues
- x402 payment protocol not supported by client — transaction cannot complete
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"pack": "catalog",
"payment": "0x<settlement transaction>",
"snapshot": {
"count": 1,
"sites": [
{
"host": "example.com",
"facts": {
"botProbes": {
"GPTBot": 200,
"ClaudeBot": 200,
"OAI-SearchBot": 200,
"PerplexityBot": 200
},
"visibleLength": 1466,
"botControlStatus": 200
},
"score": 82,
"category": "tool",
"findings": [
{
"id": "no_llms_txt",
"what": "No llms.txt.",
"severity": "medium"
}
],
"checkedAt": "2026-09-20T08:00:00.000Z",
"bySeverity": {
"low": 1,
"high": 0,
"info": 0,
"medium": 1,
"critical": 0
},
"description": "A scheduling tool for small teams."
}
],
"counts": {
"reviewed": 1,
"described": 1,
"fetchOnly": 0
},
"truncated": false,
"categories": {
"tool": 1
},
"generatedAt": "2026-09-27T12:00:00.000Z"
}
}
}Tags
x402
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