{"uid":"cap_sHMlAJJvzr2PDOn97OHwp","slug":"sitecheck-web-intel-surbl-uri-lookup-fd42f4ed","name":"SiteCheck Web Intel – SURBL URI Lookup","description":"Checks a domain against SURBL's multi-list (multi.surbl.org): whether it appears in spam or phishing URI lists. Listed domains return a 127.0.0.x code. Not listed means not in SURBL's current lists, not that the domain is safe.","url":"https://api.webintel-api.workers.dev/api/security/surbl-uri-lookup?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 name such as example.com (required)"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.002","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":"$0.002/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_7f5H3MGJOEaaQpIuxqyXR","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.002","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Checks a domain against SURBL's multi-list (multi.surbl.org) to determine if it appears in spam or phishing URI blocklists, returning a 127.0.0.x response code if listed.","exampleAgentPrompt":"Can you check if the domain 'cheapmeds-online.ru' is listed in SURBL's spam and phishing URI blocklists?","exampleUseCases":[{"title":"Email spam sender domain check","prompt":"I just got a suspicious email from someone at 'promo.discountpills247.net' — can you check if that domain is flagged in SURBL's spam or phishing URI lists?"},{"title":"Pre-click phishing link verification","prompt":"Before I click this link, can you check whether 'click.free-prize-winner.com' is listed as a phishing or spam domain in SURBL?"},{"title":"Automated inbound link screening","prompt":"We're building a content moderation pipeline — can you look up 'buycheapviagra.biz' in SURBL to see if it's on any spam or phishing URI blocklists?"}],"resultDescription":"Returns a SURBL listing status for the queried domain. If listed, a 127.0.0.x DNS response code is returned indicating which SURBL sub-lists the domain appears on (spam, phishing, malware, etc.). If not listed, the response indicates absence from current SURBL lists. Note: not listed does not certify the domain as safe, only that it is not currently in SURBL's tracked lists.","failureModes":["Missing required 'domain' query parameter returns an error","Invalid or malformed domain string may produce unexpected results","Domain not in SURBL lists returns 'not listed' — not a safety certification","SURBL list may have propagation delays; very new domains may not yet appear","Rate limits or payment failures return 402 or throttle errors","Private/internal domain names (e.g. localhost) will not be meaningful to look up"],"whenToPreferThis":"Choose this endpoint when you need to quickly check a domain's spam or phishing reputation against SURBL's widely-used URI blocklist — particularly useful for email security pipelines, content moderation, or pre-click link verification. Prefer this over IP-reputation checks (like CI Army) when the threat vector is a spam or phishing URI embedded in email or web content. Best suited for single-domain spot checks rather than bulk reputation scoring.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-25T12:31:22.206Z","isFirstParty":false,"canonicalSlug":"sitecheck-web-intel-surbl-uri-lookup-fd42f4ed"}