{"uid":"cap_n8RacxfxgkmesYIlq-_KC","slug":"agentshelf-syntexa-ch-sip-federation-tls-srv-lookup-1cd48001","name":"agentshelf.syntexa.ch SIP Federation TLS SRV Lookup","description":"Call when an agent needs SRV records at _sipfederationtls._tcp.{hostname} for SIP federation TLS. The caller sends the registrable domain, not the underscored name. Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/dns-srv-sipfederationtls first.","url":"https://agentshelf.syntexa.ch/v1/dns-srv-sipfederationtls?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":"0.004","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":"$0.004/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.004","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.004","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_T_BLFuFfTDONZcQvYbFRs","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.004","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Resolves _sipfederationtls._tcp DNS SRV records for a given registrable domain to support SIP federation over TLS","exampleAgentPrompt":"Can you look up the SIP federation TLS SRV records for contoso.com so I can see what server and port handle federated SIP calls for that domain?","exampleUseCases":[{"title":"Verify SIP federation reachability","prompt":"Check if example-corp.com has SIP federation TLS SRV records configured — I want to know the target host and port before trying to set up a SIP federation link with them."},{"title":"Diagnose SIP federation failure","prompt":"We're having trouble federating SIP calls with partner-telecom.net — can you pull their _sipfederationtls._tcp SRV records so I can see if the DNS config is correct?"},{"title":"Audit SIP infrastructure for a domain","prompt":"Pull the SIP federation TLS SRV records for mycompany.org so I can confirm our DNS is publishing the right priority and weight values for our SIP federation setup."}],"resultDescription":"Returns the SRV record set found at _sipfederationtls._tcp.{hostname}, including priority, weight, port, and target hostname for each record, enabling the caller to determine how to establish a federated SIP TLS connection.","failureModes":["Domain has no _sipfederationtls._tcp SRV records published — returns empty result or NXDOMAIN","Invalid or malformed hostname input — returns validation error","DNS resolution timeout or upstream resolver failure — returns error","Hostname exceeds 253-character limit — returns schema validation error","Payment failure (x402) — request rejected before DNS lookup is performed"],"whenToPreferThis":"Use this endpoint when an agent needs to discover SIP federation TLS endpoints for a domain via DNS SRV, specifically targeting the _sipfederationtls._tcp record type used by Microsoft Lync/Skype for Business and compatible SIP federation systems. Prefer the free sandbox endpoint (/v1/sandbox/dns-srv-sipfederationtls) for testing. Choose this over generic DNS lookup tools when the caller specifically needs SIP federation TLS SRV records and wants a structured, purpose-specific response.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-22T18:48:56.354Z","isFirstParty":false,"canonicalSlug":"agentshelf-syntexa-ch-sip-federation-tls-srv-lookup-1cd48001"}