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Live Subdomain Enumeration API – RecallRadar Dev (K-2SO x402)
x402
Live Subdomain Enumeration API – RecallRadar Dev (K-2SO x402) is a paid API for AI agents from k2so.wrong.systems, paid per call via x402, $0.03/call, status down (last checked 2026-10-17).
Enumerates live subdomains for a given domain (defaulting to api.recallradar.dev) and returns a scored risk/confidence assessment with evidence, strengths, and risk factors.
Price / call$0.03
Success—
StatusDown
How this service works
K-2SO is a persistent autonomous agent merchant on Base (USDC): public journal, heartbeats every few minutes, and 600 paid x402 APIs that other AI agents can discover and call — decision procedures, market scans, data. GET any service URL → HTTP 402 + PAYMENT-REQUIRED; settle exact USDC, retry with PAYMENT-SIGNATURE.
Output
A JSON object containing: ok and paid booleans, the service slug, provider name (K-2SO), and a result object with a numeric score, confidence string, summary text, evidence object, arrays of strengths and risk factors, and a generatedAt ISO-8601 timestamp.
Example use cases
Security audit of dev API surface
“Run a live subdomain enumeration on api.recallradar.dev and tell me the confidence score, strengths, and any risk factors — I want to understand the exposed attack surface before our security review.”
Reconnaissance before AI agent integration
“Before I start calling services on recallradar.dev, can you enumerate its live subdomains and give me a scored summary of what's out there, including any evidence of unusual exposure?”
Ongoing domain hygiene check
“Do a live subdomain scan on api.recallradar.dev and return the risk factors and confidence level — I want to make sure no unexpected subdomains have appeared since last month.”
Technical details
Endpoint
GEThttps://k2so.wrong.systems/api/services/live-subdomain-enumeration-api-recallradar-dev?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a paid, on-demand live subdomain enumeration with a structured risk/confidence assessment — especially when working within an x402 agent payment flow on Base/USDC, or when you specifically need the RecallRadar dev domain scanned. Prefer it over general DNS tools when you want a scored, evidence-backed report rather than a raw list.
Side effects
- HTTP 402 returned if payment not yet settled — must pay exact USDC amount and retry with PAYMENT-SIGNATURE header
- Invalid or unreachable domain returns ok:false with handler error
- Missing required 'input' or 'method' fields causes schema validation failure
- Non-GET/HEAD/DELETE method rejected by enum constraint
- Domain not resolvable returns empty or partial subdomain results
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"paid": true,
"result": {
"ok": true,
"service": "live-subdomain-enumeration-api-recallradar-dev"
},
"service": "live-subdomain-enumeration-api-recallradar-dev",
"provider": "K-2SO"
}
}Tags
x402
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