{"uid":"cap_IVlXdvRUmzZCqNFTM9nnD","slug":"carddav-s-srv-record-lookup-d29c42c5","name":"CardDAV-S SRV Record Lookup","description":"CARDDAVS service discovery (_carddavs._tcp.<domain>): SRV records with priority, weight, port and target host, from Cloudflare DoH. Tells a client where the domain's carddavs service lives without guessing hosts. $0.01 per lookup.","url":"https://dns.intel.rallylive.ca/dns/srv/carddavs-tcp?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","properties":{}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"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_87BHudNa2A-WO0Qo-iktB","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":"Resolves _carddavs._tcp SRV DNS records for a domain to discover where its CardDAV-over-TLS contact sync service is hosted.","exampleAgentPrompt":"Look up the _carddavs._tcp SRV record for example.com so I can find out which host and port to connect to for its secure CardDAV contact sync service.","exampleUseCases":[{"title":"Auto-configure contact sync client","prompt":"Can you find the secure CardDAV server details for fastmail.com? I need the host, port, and priority so I can set up my contacts app automatically."},{"title":"Validate carddavs infrastructure","prompt":"Check whether apple.com has a _carddavs._tcp SRV record and tell me what host and port it points to — I'm auditing their contact sync infrastructure."},{"title":"Build email domain directory tool","prompt":"Look up the carddavs SRV record for protonmail.com — I need the target hostname, port, and weight to include in my domain directory tool."}],"resultDescription":"Returns SRV record fields for the _carddavs._tcp subdomain of the queried domain: priority (lower = preferred), weight (load-balancing hint), port number, and target hostname. These tell a CardDAV client exactly where to connect for secure contact synchronization.","failureModes":["Domain has no _carddavs._tcp SRV record (NXDOMAIN or empty answer)","Domain does not exist","Cloudflare DoH upstream timeout or error","Malformed domain name input","Payment not processed (x402 payment required)"],"whenToPreferThis":"Use this endpoint when you need to programmatically discover where a domain's CardDAV-over-TLS (HTTPS) contact sync service is hosted, instead of guessing common hostnames. Ideal for auto-configuration flows, infrastructure audits, and building directory tools. Prefer over generic DNS resolvers when you specifically need the _carddavs._tcp SRV record via a low-cost, pay-per-call API.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-20T00:59:13.645Z","isFirstParty":false,"canonicalSlug":"carddav-s-srv-record-lookup-d29c42c5"}