# 402registry Catalog Snapshot

> 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).

## Facts

- Endpoint: GET https://402registry.com/buy/catalog?utm_source=zero.xyz
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/402registry-catalog-snapshot-dc2f0758
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_SUnz0LBKf0oQ_8SMyv7m0

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability 402registry-catalog-snapshot-dc2f0758
```

Example prompt: Give me the full 402registry catalog snapshot — I want to see every audited site with its AI crawler findings, severity, tech stack, and what GPTBot or ClaudeBot actually saw, including robots.txt and llms.txt status.

## When to prefer this

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.

## Known failure modes

- 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

## How this service works

Pay-per-check discoverability audit: $0.10 to see what an AI crawler actually sees on your site — GPTBot, ClaudeBot, PerplexityBot, OAI-SearchBot, not a browser render. A passing check earns a dated badge and a registry listing. No account, no card, no human.

## 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.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD"
     ],
     "type": "string"
    },
    "headers": {
     "type": "object",
     "additionalProperties": {
      "type": "string"
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "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"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/402registry-catalog-snapshot-dc2f0758/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from 402registry.com](https://www.zero.xyz/host/402registry.com/llms.txt)