{"uid":"cap_HpM-mFMAYENcT_3l9v3Wt","slug":"delx-commerce-dns-dkim-selector-check-2248d8a6","name":"Delx Commerce — DNS DKIM Selector Check","description":"Pay-per-result APIs for agents. No signup. Exact price. Verifiable delivery. USDC on Base + Solana via x402.","url":"https://commerce.delx.ai/api/v1/x402/dns-dkim-selector-check?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"domain":{"type":"string","maxLength":8192,"description":"Domain supplied to DNS DKIM Selector Check; used only for this bounded calculation and processed in memory without retention."},"selector":{"type":"string","maxLength":8192,"description":"Selector supplied to DNS DKIM Selector Check; used only for this bounded calculation and processed in memory without retention."}}},"responseSchema":{"type":"json","example":{"result":{"lookup_name":"mail2026._domainkey.example.com","shape_valid":true},"schema":"delx/util-dns-dkim-selector-check/v1","status":"pass","evidence":{"retained":false,"input_sha256":"2ed271ad81bc9b1f625cc07ddea8ac977772c863beecee8294f8e92984db609a","external_calls":0},"operation":"web_reliability:dns_dkim_selector_check"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.001","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":"$0.001/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_ZsB3VOipMsQpia2EfPtRh","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Checks whether a given DKIM selector exists and has a valid shape in DNS for a specified domain","exampleAgentPrompt":"Can you check whether the DKIM selector 'mail2026' is properly set up in DNS for example.com and tell me if the record shape looks valid?","exampleUseCases":[{"title":"Email deliverability pre-flight check","prompt":"Before we send our campaign, can you verify that the DKIM selector 'newsletter' is correctly published in DNS for ourdomain.com so we know email signing is working?"},{"title":"Debugging bounced or rejected emails","prompt":"Our emails from acme.com are failing DKIM authentication — can you look up whether the selector 'google' is actually present and valid in DNS for acme.com?"},{"title":"Post-migration DNS health verification","prompt":"We just migrated our email infrastructure — can you confirm the DKIM selector 'smtp2024' is still live and well-formed in DNS for newdomain.io?"}],"resultDescription":"Returns a JSON object containing the fully-qualified lookup name (e.g. 'mail2026._domainkey.example.com'), a boolean indicating whether the DKIM record shape is valid, a pass/fail status, and a verifiable evidence block including a SHA-256 hash of the input and a flag confirming no data was retained.","failureModes":["Domain or selector not found in DNS returns a failed status with shape_valid false","Malformed domain or selector input may cause validation error","DNS lookup timeout could result in an error response","Non-existent DKIM selector returns lookup name but shape_valid false"],"whenToPreferThis":"Choose this endpoint when you need a lightweight, pay-per-call, no-signup DKIM selector DNS check with cryptographic evidence of the result and a guarantee of no data retention. Prefer it over running your own DNS lookup when you need verifiable, auditable results for compliance or debugging purposes, especially within an automated agent workflow on Base or Solana via x402 payments.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-01T00:53:39.730Z","isFirstParty":false,"canonicalSlug":"delx-commerce-dns-dkim-selector-check-2248d8a6"}