{"uid":"cap_YQx0dGH3j_sdeWAxXxFZX","slug":"dns-srv-record-lookup-for-smtp-agentshelf-syntexa-ch-421895cf","name":"DNS SRV Record Lookup for SMTP (agentshelf.syntexa.ch)","description":"Call when an agent needs SRV records at _smtp._tcp.{hostname} for SMTP. The caller sends the registrable domain, not the underscored name. Send JSON {\"hostname\":\"example.com\"}. Exact $0.009 USDC on Base. Try unpaid POST /v1/sandbox/dns-srv-smtp first.","url":"https://agentshelf.syntexa.ch/v1/dns-srv-smtp?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"hostname":{"type":"string","examples":["example.com"],"maxLength":253,"minLength":1,"description":"Public DNS hostname such as example.com. Not a URL, not an IP literal, and not a private name."}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.009","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":"$0.009/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.009","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.009","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_9qLFr4wJnMCArgx3M9Tnj","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.009","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Queries SRV DNS records at _smtp._tcp.{hostname} for a given registrable domain, returning SMTP server routing information.","exampleAgentPrompt":"Can you look up the SMTP SRV records for example.com so I know what mail server handles its SMTP routing?","exampleUseCases":[{"title":"Email server discovery for domain","prompt":"What SMTP servers are listed in the SRV DNS records for acmecorp.com? I need to know where to route outbound mail."},{"title":"Validate SMTP service configuration","prompt":"Check whether mailprovider.io has proper SMTP SRV records set up — I want to see the host, port, priority, and weight advertised."},{"title":"Automate mail routing for new tenant","prompt":"Before onboarding this new customer at clientdomain.net, look up their _smtp._tcp SRV records so we can configure the correct mail relay endpoint automatically."}],"resultDescription":"Returns the SRV record data found at _smtp._tcp.{hostname}, typically including target hostname, port, priority, and weight values that describe available SMTP servers for the domain.","failureModes":["Domain does not exist — DNS NXDOMAIN response","No SRV records configured at _smtp._tcp.{hostname} — empty result","Invalid or malformed hostname input — validation error","Network timeout or DNS resolver failure","Hostname exceeds 253-character limit — schema validation error"],"whenToPreferThis":"Use this endpoint when an agent specifically needs to discover SMTP server configuration via DNS SRV records for a given domain, such as for automated email routing, SMTP client configuration, or validating that a domain has published SMTP service records. Prefer the free sandbox endpoint (/v1/sandbox/dns-srv-smtp) for testing before using this paid endpoint.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-11T18:54:11.630Z","isFirstParty":false,"canonicalSlug":"dns-srv-record-lookup-for-smtp-agentshelf-syntexa-ch-421895cf"}