{"uid":"cap_-zLo1BP0CQMie4Qe7eFxF","slug":"delx-commerce-email-mx-readiness-check-386c40f5","name":"Delx Commerce — Email MX Readiness 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/email-mx-readiness-check?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"records":{"type":"array","items":{"type":"object","maxProperties":128,"additionalProperties":true},"maxItems":256,"description":"Records supplied to Email MX Readiness Check; used only for this bounded calculation and processed in memory without retention."}}},"responseSchema":{"type":"json","example":{"result":{"ready":true,"usable_records":[{"exchange":"mx.example.com","priority":10}]},"schema":"delx/util-email-mx-readiness-check/v1","status":"pass","evidence":{"retained":false,"input_sha256":"2f2f55bbb9bea419341f4467faeb92d47276b73be2a24e15557a35a2e9286b7e","external_calls":0},"operation":"web_reliability:email_mx_readiness_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_rV2LkJwUD9bXB9WkUYw8t","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":"Validates whether a set of DNS MX records indicate that a domain is ready and able to receive email.","exampleAgentPrompt":"Can you check if these MX records I pulled from DNS mean the domain is actually ready to receive email: [{\"exchange\": \"mx.acmecorp.com\", \"priority\": 10}]?","exampleUseCases":[{"title":"Pre-send deliverability validation","prompt":"Before I send this campaign, check whether these MX records from my recipient list domains indicate that email will actually be delivered: [{\"exchange\": \"mail.example.com\", \"priority\": 5}, {\"exchange\": \"mail2.example.com\", \"priority\": 10}]."},{"title":"New user email verification","prompt":"A new user just signed up with a company email — can you check these MX records to confirm their domain is set up to receive email before I try to send a welcome message: [{\"exchange\": \"mx.newuser-corp.com\", \"priority\": 10}]?"},{"title":"Email infrastructure audit","prompt":"I'm auditing the email infrastructure for a batch of domains we manage — run an MX readiness check on these records and tell me which ones are actually usable: [{\"exchange\": \"mx1.clientdomain.com\", \"priority\": 10}, {\"exchange\": \"mx2.clientdomain.com\", \"priority\": 20}]."}],"resultDescription":"Returns a readiness boolean, a list of usable MX records with exchange hostnames and priorities, a pass/fail status, and an evidence block containing an SHA-256 hash of the input, a flag confirming no data retention, and a count of external calls made — all under the delx/util-email-mx-readiness-check/v1 schema.","failureModes":["Empty or malformed records array returns a failed readiness check with no usable records","Records exceeding 256 items may be rejected or truncated","Invalid record object structure may cause parsing errors","Network or service unavailability returns a non-200 response","Payment failure via x402 protocol prevents the call from completing"],"whenToPreferThis":"Choose this endpoint when you need a lightweight, pay-per-call, no-signup validation of MX record readiness — especially in agentic pipelines where verifiable, tamper-evident evidence (input hash, no-retention flag) matters. It is preferable over full SMTP probing tools when you already have MX records and want a fast, in-memory check without external DNS lookups or persistent data storage.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-01T00:54:06.181Z","isFirstParty":false,"canonicalSlug":"delx-commerce-email-mx-readiness-check-386c40f5"}