{"uid":"cap_ufVWQcKJZZ8a7_3w_760e","slug":"is-port-110-open-watch-613a3f92","name":"is-port-110-open-watch","description":"Change watch for is port 110 open: runs the check, compares it with the result from your previous call for the same host (kept 90 days) and returns the current answer, changed true/false, the fields that changed with before/after values, and when it was last seen. Schedule it to be alerted when this changes. $0.02 per check.","url":"https://ip.intel.rallylive.ca/watch/ip/port/110?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$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":"0.02","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":"$0.02/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_vive5ef28vHm3asZI8HKP","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.02","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Change-watch for TCP port 110 (POP3) availability on a host: runs the check, diffs against the previous result (retained 90 days), and returns what changed.","exampleAgentPrompt":"Keep an eye on port 110 for mail.example.com and let me know as soon as its open/closed status changes compared to the last time you checked.","exampleUseCases":[{"title":"Mail server POP3 outage alerting","prompt":"Watch port 110 on our mail server at 203.0.113.45 and alert me the moment it goes from open to closed — I need to know immediately if POP3 goes down."},{"title":"Detecting unauthorized POP3 exposure","prompt":"Check whether port 110 on 198.51.100.22 has changed state since the last scan — I want to know if it's suddenly become open when it shouldn't be."},{"title":"Scheduled infrastructure change monitoring","prompt":"Poll port 110 on smtp.mycompany.org every hour and tell me each time the status changes, including what it was before and what it is now."}],"resultDescription":"Returns the current open/closed status of TCP port 110, a boolean 'changed' flag indicating whether the result differs from the previous call for the same host, a list of fields that changed with before/after values, and the timestamp of when the state was last observed. Previous results are retained for 90 days.","failureModes":["Host unreachable or invalid hostname — check may return error or indeterminate status","No prior result stored for host — first call returns current state with no diff (changed: false)","Firewall or network filtering at scan origin may cause false 'closed' readings","Stored previous result expired after 90 days — treated as first-time check","Rate limit or payment failure — call rejected"],"whenToPreferThis":"Choose this endpoint when you need to detect changes in port 110 (POP3) availability over time rather than just a one-shot open/closed check. It is ideal for scheduled monitoring workflows where you want to be alerted only when something changes, saving unnecessary processing of identical results. Prefer it over plain port-check endpoints when you need the before/after diff and change timestamp built in.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-13T00:41:46.022Z","isFirstParty":false,"canonicalSlug":"is-port-110-open-watch-613a3f92"}