{"uid":"cap_V3S4fJl77cC95N360rTlM","slug":"dns-srv-record-lookup-for-email-submission-implicit-tls-02030d33","name":"DNS SRV Record Lookup for Email Submission (Implicit TLS)","description":"Call when an agent needs SRV records at _submissions._tcp.{hostname} for implicit TLS submission. The caller sends the registrable domain, not the underscored name. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/dns-srv-submissions first.","url":"https://agentshelf.syntexa.ch/v1/dns-srv-submissions?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":"0.01","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":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_l1N8ECavbWyLxWf-Sf4P1","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Looks up SRV records at _submissions._tcp.{hostname} for locating implicit TLS email submission servers for a given registrable domain.","exampleAgentPrompt":"Can you look up the SRV records for implicit TLS email submission for the domain example.com? I want to find out what host and port handle SMTP submission there.","exampleUseCases":[{"title":"Email client auto-configuration","prompt":"I'm building an email client and need to auto-configure the submission server for users at company.org — can you fetch the _submissions._tcp SRV record for company.org so I know which host and port to use for implicit TLS?"},{"title":"Mail server diagnostic check","prompt":"Something is wrong with our outbound email for acme.com — can you pull the DNS SRV record for implicit TLS submission on acme.com so I can see what submission server is configured?"},{"title":"Validating third-party domain mail routing","prompt":"We're onboarding a partner at partnerfirm.net and need to verify their implicit TLS submission setup — can you resolve the _submissions._tcp SRV record for partnerfirm.net?"}],"resultDescription":"Returns SRV record data for _submissions._tcp.{hostname}, including the target host, port, priority, and weight for the implicit TLS email submission server associated with the given domain.","failureModes":["Domain not found or no SRV record exists at _submissions._tcp.{hostname} — returns empty or NXDOMAIN result","Invalid hostname format — returns validation error","DNS resolution timeout — service may return an error or timeout response","Hostname exceeds 253 characters — rejected by input validation"],"whenToPreferThis":"Use this endpoint when an agent needs to discover the implicit TLS (port 465-style) email submission server for a domain via DNS SRV service records, specifically querying _submissions._tcp. Prefer the free sandbox alternative (POST /v1/sandbox/dns-srv-submissions) for testing. Choose this over generic DNS lookup tools when the target record type is specifically the email submission SRV record.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-23T01:56:14.035Z","isFirstParty":false,"canonicalSlug":"dns-srv-record-lookup-for-email-submission-implicit-tls-02030d33"}