{"uid":"cap_zJ6z2esWShMBmJwFbdAeb","slug":"dkim-selector-s1-change-watch-4c6dc86c","name":"DKIM Selector S1 Change Watch","description":"Change watch for dkim selector s1: 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. $0.02 per check.","url":"https://dns.intel.rallylive.ca/watch/dns/dkim/s1?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$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_WSBjeyot6DylApSQC68NB","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 the DKIM selector 's1' DNS TXT record for a domain and returns whether it has changed since the last check, along with before/after field diffs.","exampleAgentPrompt":"Keep an eye on the DKIM selector s1 record for example.com — run the check now and tell me if it's changed since the last time you looked, and show me exactly what fields are different.","exampleUseCases":[{"title":"Email deliverability regression detection","prompt":"Check whether the DKIM s1 record for acme.com has changed since the last scan — I need to know immediately if someone tampered with our signing key because our emails started bouncing."},{"title":"Scheduled DKIM rotation verification","prompt":"We just rotated our DKIM s1 selector key on maildomain.io — can you confirm the DNS record has actually updated by comparing it to the previous value and showing me the before and after?"},{"title":"Unauthorized DNS change alerting","prompt":"Poll the DKIM selector s1 record for clientdomain.net and tell me if it's been modified at all since the last check 90 days ago, including which fields changed and what the old values were."}],"resultDescription":"Returns the current DKIM s1 TXT record value, a boolean 'changed' flag indicating whether it differs from the previous call for the same domain (retained for 90 days), a list of changed fields with before/after values, and the timestamp of when the record was last seen.","failureModes":["Domain not found or has no DKIM s1 TXT record — returns empty or null record value","No previous check stored (first call) — changed flag will be false or baseline with no diff","DNS resolution timeout — transient network failure may return error response","Domain parameter missing — request may fail validation","90-day history expiry — previous value purged, diff unavailable"],"whenToPreferThis":"Use this endpoint when you need to detect changes to a domain's DKIM selector s1 DNS record over time, especially for scheduled monitoring, alerting pipelines, or compliance audits. It is specifically scoped to the 's1' DKIM selector (not s2, google, or arbitrary selectors), making it ideal for services that standardize on selector 's1'. Prefer this over a raw DNS lookup when you need change detection semantics (before/after diff, changed flag) rather than just the current value.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-20T00:58:56.895Z","isFirstParty":false,"canonicalSlug":"dkim-selector-s1-change-watch-4c6dc86c"}