{"uid":"cap_5biur7KZdvkh6ek0WxXC2","slug":"is-port-161-open-7935a9e2","name":"is-port-161-open","description":"Is TCP port 161 (SNMP) open on a host? Attempts a connection from Cloudflare's edge and reports open/closed/filtered with the connect time; Cloudflare-fronted hosts are reported as inconclusive because their edge answers for them. Exposure checks for SNMP without running a scanner. $0.01 per check.","url":"https://ip.intel.rallylive.ca/ip/port/161?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$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","properties":{}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","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":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_9so2PHcaJc3j5RpVclY8-","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Checks whether TCP port 161 (SNMP) is open, closed, or filtered on a given host by probing from Cloudflare's edge network","exampleAgentPrompt":"Can you check whether SNMP port 161 is open or closed on 203.0.113.45 — I want to know if it's exposed to the internet without running a full scanner.","exampleUseCases":[{"title":"SNMP exposure audit on a server","prompt":"I want to know if port 161 is open on my server at 198.51.100.22 — is SNMP accidentally exposed to the internet?"},{"title":"Security check before production deploy","prompt":"Before we go live, can you verify that port 161 is closed on host prod-api.example.com? We should never be exposing SNMP publicly."},{"title":"Diagnosing unreachable SNMP monitoring","prompt":"Our monitoring platform can't reach the SNMP agent on 10.0.0.5 — can you probe port 161 and tell me if it's open, closed, or filtered?"}],"resultDescription":"Returns whether TCP port 161 is open, closed, or filtered on the target host, along with the connect time in milliseconds. Hosts behind Cloudflare are flagged as inconclusive because Cloudflare's edge intercepts the connection before it reaches the origin.","failureModes":["Host behind Cloudflare returns inconclusive result — edge answers instead of origin","Firewalled or filtered port may return 'filtered' with timeout rather than definitive closed","Invalid or unresolvable hostname returns an error","Rate limiting or network issues at Cloudflare's edge may cause transient failures"],"whenToPreferThis":"Use this endpoint when you need a quick, lightweight check of whether SNMP (port 161) is publicly reachable on a host without deploying a full port scanner. Ideal for security audits, pre-deployment checks, and ongoing exposure monitoring. Note the Cloudflare-fronted host limitation — for those hosts, results will be inconclusive.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-13T00:41:37.057Z","isFirstParty":false,"canonicalSlug":"is-port-161-open-7935a9e2"}