{"uid":"cap_Pc421jJzFrfAvM2zmPN9n","slug":"agenttools-domain-availability-checker-48c89699","name":"AgentTools Domain Availability Checker","description":"Check whether a domain name is registered or available, via the official RDAP registry protocol (404 = available). For registered domains it also returns the registrar and creation/expiration dates — useful when an agent needs to name a product or verify how long a business has existed. Use this when an agent needs to is this domain taken? Registry answer, not a landing page.","url":"https://agenttools-hub.vercel.app/api/v1/dev/domain-availability?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"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"],"type":"string"},"queryParams":{"type":"object","required":["domain"],"properties":{"domain":{"type":"string","description":"Domain"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.001","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","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":"$0.001/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_6uemGiwWm_0CAhCSWewYO","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Checks if a domain name is registered or available using the official RDAP registry protocol, returning registrar and registration dates for taken domains.","exampleAgentPrompt":"Can you check if morningbloom.com is available to register, and if it's taken, tell me who the registrar is and when it was created?","exampleUseCases":[{"title":"Product naming domain check","prompt":"I'm launching a new app called NovaSpark — can you check if novaspark.io is taken or still available to register?"},{"title":"Business legitimacy verification","prompt":"I'm about to sign a contract with a company. Can you look up how long their domain techventures.com has been registered and who the registrar is?"},{"title":"Domain expiry monitoring","prompt":"Check when pivotlab.com is set to expire — I want to know if it's coming up for renewal soon so I can try to grab it."}],"resultDescription":"Returns a status indicating whether the domain is available (HTTP 404 from RDAP = available) or registered. For registered domains, returns the registrar name, creation date, and expiration date in structured form.","failureModes":["Domain query fails if the TLD is not supported by RDAP protocol","Invalid or malformed domain name returns an error","Network timeout if RDAP registry is slow to respond","Some ccTLDs may not have RDAP support and return no data"],"whenToPreferThis":"Use this endpoint when you need an authoritative, registry-level answer about whether a domain is registered — not a webpage scrape or a parking-page check. It also returns registrar and date metadata in one call, making it ideal for both availability checks and basic business due diligence without needing a separate WHOIS lookup.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-02T12:43:00.672Z","isFirstParty":false,"canonicalSlug":"agenttools-domain-availability-checker-48c89699"}