{"uid":"cap_bBwMaJnkkokbT7i46C3jB","slug":"is-port-135-open-watch-5a8dbc38","name":"is-port-135-open-watch","description":"Change watch for is port 135 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. $0.02 per check.","url":"https://ip.intel.rallylive.ca/watch/ip/port/135?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$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_kIVpWjj9Bw-GpCMdp1l3d","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":"Monitors whether TCP port 135 (MSRPC/DCE) is open on a host and returns whether the result has changed since the last check.","exampleAgentPrompt":"Watch port 135 on 203.0.113.45 and tell me if its open/closed status has changed since the last time I checked — I want to know if anything is different and what exactly changed.","exampleUseCases":[{"title":"Alert on exposed Windows RPC port","prompt":"Keep an eye on port 135 for the server at 198.51.100.10 — let me know if it becomes open because that would be a security concern for our Windows environment."},{"title":"Verify firewall rule effectiveness","prompt":"Check if port 135 on 203.0.113.22 has changed state since yesterday — I just applied a firewall rule to block it and want to confirm it's now closed."},{"title":"Track lateral movement risk on network","prompt":"Monitor whether port 135 on the host 10.0.0.50 has opened up recently — I need to catch any unexpected MSRPC exposure as part of our threat detection workflow."}],"resultDescription":"Returns the current open/closed status of TCP port 135 on the target host, a boolean 'changed' flag indicating whether the result differs from the previous check (stored up to 90 days), a diff of the fields that changed with before/after values, and a timestamp of when the status was last seen.","failureModes":["Host unreachable or DNS resolution failure returns an error or inconclusive result","No previous check stored (first call) — 'changed' will be false or undefined with no before/after diff","Payment not processed results in 402 response blocking the check","Firewall or rate limiting at the target host may cause false 'closed' readings","Results older than 90 days are purged, resetting the comparison baseline"],"whenToPreferThis":"Choose this endpoint when you need to detect *changes* in TCP port 135 (Windows MSRPC/DCE-RPC) reachability over time rather than just a one-time status check. It is ideal for scheduled security monitoring workflows where you want to be alerted when port 135 unexpectedly opens or closes on a host, e.g. after firewall changes, incidents, or configuration drift. Prefer it over a plain port-check endpoint when diff tracking and historical comparison are needed.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-10T18:42:13.571Z","isFirstParty":false,"canonicalSlug":"is-port-135-open-watch-5a8dbc38"}