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Crawler Identity Verification for x402/MPP Merchants
x402
Crawler Identity Verification for x402/MPP Merchants is a paid API for AI agents from k2so.wrong.systems, paid per call via x402, $0.002/call, status down (last checked 2026-10-11).
Returns a decision procedure for distinguishing legitimate AI crawler bots from vulnerability scanners spoofing crawler user-agents at x402/MPP paid endpoints.
Price / call$0.002
Success—
StatusDown
How this service works
Decision procedure for x402/MPP merchants receiving inbound requests that claim an AI crawler user-agent (ClaudeBot, GPTBot, PerplexityBot, CCBot, cohere-ai, etc.) but may be mass vulnerability scanners spoofing those names to get past bot defenses. Inputs: user-agent string, source IP, claimed origin domain, request path set, rate, and whether the endpoint demands a 402 challenge. Steps: 1) extract claimed crawler identity; 2) look up the identity's published IP ranges or reverse-DNS pattern;
Output
Returns a JSON object containing a plain-prose decision procedure (120+ words) describing step-by-step how to verify the claimed crawler identity, along with the service slug, provider name, generation source (llm/reasoning/deterministic), the model used, and an ISO-8601 timestamp. The 'brief' and 'procedure' fields contain the actionable verification steps.
Example use cases
Block scanner spoofing ClaudeBot at paid endpoint
“I'm getting a lot of traffic to my x402 API that claims to be ClaudeBot but the IPs look suspicious — give me a step-by-step procedure to verify if these are real Anthropic crawlers or vulnerability scanners trying to get past my bot defenses.”
Validate PerplexityBot before serving paid content
“Before I let PerplexityBot access my micropayment-gated content endpoint, I need a decision procedure that checks the user-agent, source IP range, and reverse-DNS against Perplexity's published crawler specs — can you run that check?”
High-rate CCBot traffic anomaly investigation
“My x402 merchant endpoint is seeing a burst of CCBot-claimed requests at unusually high rates — walk me through a procedure to determine if this is a legitimate Common Crawl scrape or a mass vulnerability scan spoofing that user-agent.”
Technical details
Endpoint
GEThttps://k2so.wrong.systems/api/services/crawler-identity-verification-x402-merchants?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you are operating an x402 or micropayment-protected API and need a structured, authoritative decision procedure to distinguish real AI crawler bots (ClaudeBot, GPTBot, CCBot, PerplexityBot, cohere-ai) from vulnerability scanners spoofing those identities. It is especially valuable when you want a ready-made prose procedure you can feed directly to an agent rather than implementing IP range lookups and reverse-DNS checks yourself.
Side effects
- Missing or malformed query parameters may return an incomplete or generic procedure
- Non-payment or failed 402 challenge returns a payment-required response without the decision content
- Invalid topic override may cause the procedure to be off-target
- High load on the LLM backend may increase latency or return a deterministic fallback
- IP ranges for newer or obscure crawlers may not be in the knowledge base, leading to inconclusive verdicts
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"paid": true,
"result": {
"ok": true,
"brief": "plain prose decision procedure (120+ words)",
"model": "deepseek/deepseek-v4-flash-0731",
"topic": "string topic",
"service": "crawler-identity-verification-x402-merchants",
"procedure": "same as brief",
"generatedAt": "2026-01-01T00:00:00.000Z",
"generationSource": "deterministic"
},
"service": "crawler-identity-verification-x402-merchants",
"provider": "K-2SO"
}
}Tags
x402
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