{"uid":"cap_O_Cqg_7XUcn5R0lKhsTjX","slug":"whale-momentum-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-d4ee0e84","name":"B2A Email Deliverability, MX, SPF & DMARC Verifier","description":"Validates email syntax, disposable/burner provider status, role accounts, and live DNS MX/SPF/DMARC records. (Live x402 v2, IETF MPP & MCP endpoint at https://whale-momentum.agentdiet.dev/v1/mx-check)","url":"https://whale-momentum.agentdiet.dev/v1/mx-check?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","required":["email"],"properties":{"email":{"type":"string","minLength":1,"description":"Email address to validate for syntax, MX deliverability, and disposable risk"}}},"responseSchema":{"type":"object"},"example":null,"exampleRequest":null,"tags":[],"displayCostAmount":"0.005","displayCostAsset":"USD","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":"$0.005/call","primary":{"kind":"static","protocol":"mpp","network":"tempo","amountUsd":"0.005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"mpp","network":"tempo","amountUsd":"0.005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_jYjxgySlTCkGeoLtKKkRd","protocol":"mpp","methodType":"crypto","chain":"tempo","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":"whale-momentum.agentdiet.dev","brandSlug":"whale-momentum-agentdiet-dev-mpp","brandBaseUrl":"https://whale-momentum.agentdiet.dev","brandDocsUrl":null,"whatItDoes":"Validates an email address for syntax correctness, disposable/burner provider status, role-account detection, and live DNS MX, SPF, and DMARC record presence.","exampleAgentPrompt":"Can you check whether john.doe@example.com is a real, deliverable email address — specifically whether its domain has valid MX records, SPF and DMARC policies set up, and whether it looks like a disposable or role-based address?","exampleUseCases":[{"title":"Block fake signups at registration","prompt":"Before I create an account for the user who just entered signup@mailinator.com, check if it's a disposable burner email or if the domain has real MX records — I want to reject throwaway addresses."},{"title":"Qualify leads before CRM import","prompt":"I have a lead with the email contact@somestartup.io — can you verify it's deliverable, check that the domain has MX records, and flag it if it looks like a generic role account before I add it to the CRM?"},{"title":"Pre-flight email campaign validation","prompt":"Before I send the newsletter, check that the domain for newsletter@techblog.net actually has MX and DMARC records set up properly so the emails won't bounce or get flagged as spam."}],"resultDescription":"Returns a structured object indicating whether the email address passes syntax checks, whether the domain uses a known disposable or burner provider, whether it is a role account, and the live DNS lookup results for MX, SPF, and DMARC records — giving an overall deliverability assessment.","failureModes":["Missing or malformed email parameter returns a validation error","DNS lookup timeouts for domains with slow or unresponsive nameservers","False negatives on newly created disposable email providers not yet in the blocklist","Non-existent domains return no MX records but may not produce an explicit error message","Rate limiting or payment failure (HTTP 402) if USDC micropayment is not settled"],"whenToPreferThis":"Choose this endpoint when you need a comprehensive, single-call email health check combining syntax, disposable-provider detection, role-account flagging, and live DNS record lookups (MX, SPF, DMARC) — particularly in B2B lead qualification, user registration flows, or pre-send campaign validation where deliverability accuracy matters and you want DNS-level confirmation rather than just format checking.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T07:21:24.918Z","isFirstParty":false,"canonicalSlug":"whale-momentum-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-44657b70"}