{"uid":"cap_Yuv7JT-9Bw9Lv58preCKH","slug":"dns-mx-change-watch-via-dns-sb-49a49f5b","name":"DNS MX Change Watch via DNS.SB","description":"Change watch for dns mx via dnssb: runs the check, compares it with the result from your previous call for the same domain (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. $0.02 per check.","url":"https://dns.intel.rallylive.ca/watch/dns/mx/via/dnssb?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$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_CB1JHHzabY66DTmrbyJ6D","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 MX DNS records for a domain using DNS.SB and returns the current result plus a change diff compared to the previous check (stored 90 days).","exampleAgentPrompt":"Keep an eye on the MX records for example.com using DNS.SB and let me know if anything changes — I want to see what fields shifted and what the values were before and after.","exampleUseCases":[{"title":"Email hijack detection for domain","prompt":"Watch the MX records for mycompany.com via DNS.SB and alert me if they change — I want to catch any unauthorized changes to our mail routing as soon as they happen."},{"title":"Third-party email provider migration tracking","prompt":"Check if the MX records for clientdomain.net have changed since the last time you looked — we're migrating their email to Google Workspace and I need to confirm the cutover happened."},{"title":"Competitive mail infrastructure monitoring","prompt":"Monitor the MX records for competitor.io using DNS.SB and tell me whenever they change their email provider — I want to track their infrastructure shifts over time."}],"resultDescription":"Returns the current MX record answer from DNS.SB, a boolean 'changed' flag, a list of fields that changed with before and after values, and a timestamp of when the record was last seen. Previous result is stored for up to 90 days for comparison.","failureModes":["Domain not found or NXDOMAIN — returns empty record set with no change data","DNS.SB resolver unavailable — query fails with upstream error","No prior result stored (first call) — 'changed' is false or undefined, no diff available","Invalid domain format in query — request rejected","Rate limiting or payment failure — call blocked"],"whenToPreferThis":"Use this endpoint when you need to detect changes in MX (mail exchanger) records specifically, using DNS.SB as the resolver, and want built-in diffing against a stored previous result rather than maintaining your own snapshot state. Ideal for scheduled monitoring workflows where you want change alerts without managing history yourself.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T18:55:55.520Z","isFirstParty":false,"canonicalSlug":"dns-mx-change-watch-via-dns-sb-49a49f5b"}