{"uid":"cap_Fyobtx3K_5fHObyWjjgUA","slug":"agentutility-subdomain-enumerator-385e8ccf","name":"AgentUtility Subdomain Enumerator","description":"817 pay-per-call APIs for AI agents. Every endpoint is POST /<name> and is payable in USDC over x402 on Base and Solana — no signup, no API key, just pay-per-call. GET https://x402.agentutility.ai/ returns the same catalog as machine-readable JSON.","url":"https://x402.agentutility.ai/subdomain-enum?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method","bodyType","body"],"properties":{"body":{"required":["domain"],"properties":{"domain":{"type":"string","description":"Target domain to enumerate, e.g. 'example.com'. Normalized (scheme/www stripped)."},"include_wildcards":{"type":"boolean","description":"Include wildcard cert entries (*.sub.example.com). Optional, default false."}}},"type":{"type":"string","const":"http"},"method":{"enum":["POST"],"type":"string"},"bodyType":{"enum":["json","form-data","text"],"type":"string"}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","properties":{"subdomains":{"type":"array","items":{"type":"object","properties":{"hostname":{"type":"string"}}}},"subdomain_count":{"type":"integer"}}}}}}},"responseSchema":{"type":"json","example":{"subdomains":[{"hostname":"www.example.com"}],"subdomain_count":12}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.03","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"registry","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.03/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.03","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.03","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_ilL1bpC5SNqYH50tBUPGD","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.03","costPer":"request","priority":0,"asset":null,"unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Enumerates subdomains for a given domain, returning a list of discovered hostnames and a count","exampleAgentPrompt":"Can you enumerate all the subdomains for tesla.com and tell me how many there are?","exampleUseCases":null,"resultDescription":"A JSON object containing an array of subdomain objects (each with a 'hostname' field) and a 'subdomain_count' integer indicating how many subdomains were found.","failureModes":["Invalid or non-existent domain returns empty subdomain list","Malformed domain input may return an error response","Payment failure via x402 results in 402 response before processing","Rate limiting or timeout for domains with extremely large subdomain spaces","Private or heavily shielded domains may return incomplete results"],"whenToPreferThis":"Use this endpoint when an agent needs to programmatically discover the subdomain landscape of a target domain — e.g. for security auditing, attack surface mapping, competitive intelligence, or OSINT. Prefer this over manual DNS brute-force tools when you need a single pay-per-call API with structured JSON output settled in USDC via x402.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-27T06:53:45.035Z","isFirstParty":false,"canonicalSlug":"agentutility-subdomain-enumerator-385e8ccf"}