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CardDAV SRV Record Lookup via Cloudflare DoH
x402
CardDAV SRV Record Lookup via Cloudflare DoH is a paid API for AI agents from dns.intel.rallylive.ca, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-22).
Resolves _carddav._tcp SRV DNS records for a domain using Cloudflare DNS-over-HTTPS, returning priority, weight, port, and target host for the domain's CardDAV service.
Price / call$0.01
Success—
StatusUnknown
How this service works
CARDDAV service discovery (_carddav._tcp.<domain>): SRV records with priority, weight, port and target host, from Cloudflare DoH. Tells a client where the domain's carddav service lives without guessing hosts. $0.01 per lookup.
Output
Returns the SRV records for _carddav._tcp.<domain> as answered by Cloudflare DNS-over-HTTPS, including each record's priority, weight, port, and target hostname, along with TTL and DNS response code (e.g. NOERROR or NXDOMAIN).
Example use cases
CardDAV client auto-configuration
“I'm building a contacts sync client — can you find the CardDAV SRV record for fastmail.com so I know the right server, port, and priority to connect to?”
Verifying CardDAV DNS setup
“I just configured a CardDAV SRV record for my domain mycompany.org — can you check what the DNS currently returns for _carddav._tcp.mycompany.org to make sure it's live?”
IT audit of CardDAV infrastructure
“Can you pull the _carddav._tcp SRV record for acmecorp.com? I need the target host, port, priority, and weight for our infrastructure documentation.”
Technical details
Endpoint
GEThttps://dns.intel.rallylive.ca/dns/srv/carddav-tcp?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to programmatically discover a domain's CardDAV service location via standard SRV DNS records, especially for auto-configuring contacts clients or auditing DNS infrastructure. Prefer it over manual guessing or well-known URL probing when SRV-based discovery is the target mechanism. Choose it over generic DNS tools when you specifically need _carddav._tcp SRV resolution with Cloudflare's DoH resolver.
Side effects
- Domain has no _carddav._tcp SRV record configured — returns NXDOMAIN or empty answer section
- Domain does not exist — DNS lookup fails with NXDOMAIN
- Cloudflare DoH upstream unavailable — service may return error or timeout
- Malformed domain input — query may fail or return unexpected results
- Domain has CardDAV served via other discovery methods (e.g. well-known URL) but no SRV record — returns empty result
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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