{"uid":"cap_Y0eQDLrf6EFu1l8Go9AhK","slug":"is-port-111-open-2a363afc","name":"is-port-111-open","description":"Is TCP port 111 (RPC) 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 RPC without running a scanner. $0.01 per check.","url":"https://ip.intel.rallylive.ca/ip/port/111?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$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_U1bwlFee8xPxao_vqlZ76","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 111 (RPC/portmapper) is open, closed, or filtered on a given host by attempting a connection from Cloudflare's edge network","exampleAgentPrompt":"Can you check whether TCP port 111 (the RPC portmapper) is open or closed on 198.51.100.42 — I want to know if it's exposed to the internet without having to run a scanner myself?","exampleUseCases":[{"title":"Audit server for RPC exposure","prompt":"Check if port 111 is open on my server at 203.0.113.15 — I need to know if the RPC portmapper is publicly accessible before our security review."},{"title":"Verify firewall blocks RPC","prompt":"After applying our new firewall rules, can you confirm that TCP port 111 is now closed or filtered on host 198.51.100.77?"},{"title":"Pre-deployment security check","prompt":"Before I go live with this VM at 104.21.55.30, check whether port 111 is open so I can make sure RPC isn't accidentally exposed."}],"resultDescription":"Returns whether TCP port 111 is open, closed, or filtered on the target host, along with the connection time. If the host is behind Cloudflare's edge, the result is marked as inconclusive since Cloudflare's infrastructure answers on behalf of the origin.","failureModes":["Cloudflare-fronted hosts return 'inconclusive' because Cloudflare's edge responds before the origin can be reached","Invalid or unresolvable hostname returns an error","Host actively refusing connection returns 'closed'","Firewall silently dropping packets results in 'filtered' with timeout","Network-level routing issues may cause false negatives"],"whenToPreferThis":"Use this endpoint when you need a quick, passive check of RPC port 111 exposure on a host without deploying a local network scanner. Ideal for security audits, pre-deployment checks, firewall validation, or continuous monitoring of RPC service accessibility from an external perspective. Not suitable for hosts behind Cloudflare due to the inconclusive result.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-12T18:49:27.842Z","isFirstParty":false,"canonicalSlug":"is-port-111-open-2a363afc"}