{"uid":"cap_dV10tl8hD28ielu-8jzPw","slug":"domainhelp-domain-availability-2a98dca9","name":"DomainHelp Domain Availability","description":"Tri-state domain registration availability intelligence","url":"https://app.domainhelp.com/api/v1/domain-availability/:domain?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"input":{"type":"object","oneOf":[{"required":["domain"]},{"required":["domains"]}],"properties":{"domain":{"type":"string","examples":["example.com"],"maxLength":253,"minLength":3},"domains":{"type":"array","items":{"type":"string","examples":["example.com"],"maxLength":253,"minLength":3},"maxItems":100,"minItems":1,"uniqueItems":true}},"additionalProperties":false},"output":{"type":"object","required":["product","version","domain","available","status","units","price_usd","source","registration","queried_at"],"properties":{"units":{"type":"integer","const":1},"domain":{"type":"string"},"source":{"type":"object","additionalProperties":true},"status":{"enum":["available","unavailable","unknown"],"type":"string"},"product":{"type":"string","const":"domain-availability"},"version":{"type":"string","const":"1"},"available":{"type":["boolean","null"]},"price_usd":{"type":"string"},"queried_at":{"type":"string","format":"date-time"},"registration":{"type":"object","required":["x402_url"],"properties":{"x402_url":{"type":["string","null"],"format":"uri-reference"}},"additionalProperties":false}},"additionalProperties":false},"$schema":"https://json-schema.org/draft/2020-12/schema"},"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_5-OcgM1ADphE8GE5uonhN","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 whether a domain name (or batch of up to 100 domains) is available for registration, returning a tri-state status: available, unavailable, or unknown","exampleAgentPrompt":"Can you check if 'launchpad.io' is available to register? I want to know if it's taken or free before I start building my brand around it.","exampleUseCases":[{"title":"Startup domain name scouting","prompt":"I'm thinking of naming my startup 'Verdant' — can you check if verdant.com, verdant.io, and verdant.co are available to register so I can pick the best one?"},{"title":"Bulk domain availability sweep","prompt":"I have a list of 10 domains I brainstormed for my product launch — can you check all of them at once and tell me which ones are still available: brightleaf.com, brightleaf.io, brightleaf.co, brightleaf.app, brightleaf.net, getbrightleaf.com, trybrightleaf.com, brightleafhq.com, brightleafapp.com, brightleafproject.com?"},{"title":"Competitor brand monitoring","prompt":"Before we finalize our company rebrand to 'Axiom Labs', can you check if axiomlabs.com is still available for registration or if someone already owns it?"}],"resultDescription":"Returns a JSON object with the queried domain name, a tri-state status string ('available', 'unavailable', or 'unknown'), a nullable boolean available flag, a price_usd field, a queried_at ISO timestamp, a source object with raw data, and a registration object containing an x402_url if the domain can be registered. Supports batch mode returning results for up to 100 domains.","failureModes":["Domain string exceeds 253 characters or is fewer than 3 characters — input rejected","Status returns 'unknown' when the registry is unreachable or WHOIS/RDAP data is unavailable","Batch of more than 100 domains submitted — request rejected","Invalid domain format (e.g. missing TLD) — may return unknown or error","Payment of 0.001 USDC not fulfilled via x402 — request blocked"],"whenToPreferThis":"Use DomainHelp when you need a clean tri-state availability answer (available/unavailable/unknown) with x402 micropayment support and batch lookup of up to 100 domains in a single call. Prefer it over generic WHOIS tools when you need machine-readable structured output, a registration URL, and a known price per query. The sibling DomainHelp Intelligence endpoint covers RDAP/WHOIS/DNS detail — use this availability endpoint when the sole question is 'can I register this domain right now?'","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-31T18:34:36.777Z","isFirstParty":false,"canonicalSlug":"domainhelp-domain-availability-07fc895d"}