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SRV Record Lookup for Secure MQTT over TCP
x402
SRV Record Lookup for Secure MQTT over TCP is a paid API for AI agents from dns.intel.rallylive.ca, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-20).
Resolves the _secure-mqtt._tcp SRV DNS record for a domain, returning priority, weight, port, and target host via Cloudflare DoH.
Price / call$0.01
Success—
StatusUnknown
How this service works
SECURE-MQTT service discovery (_secure-mqtt._tcp.<domain>): SRV records with priority, weight, port and target host, from Cloudflare DoH. Tells a client where the domain's secure-mqtt service lives without guessing hosts. $0.01 per lookup.
Output
Returns SRV record fields for _secure-mqtt._tcp.<domain>: priority (integer), weight (integer), port (integer), and target hostname — sourced from Cloudflare DoH. If no record exists, returns an empty or error response indicating the record is not configured.
Example use cases
IoT device broker auto-discovery
“What host and port should my IoT device use to connect to the secure MQTT broker for acme-iot.com? Look up the SRV record for me.”
Verify MQTT TLS service configuration
“Can you check if homeautomation.io has a _secure-mqtt._tcp SRV record configured, and tell me the target hostname and port it points to?”
Debugging MQTT connection failures
“My MQTT client can't connect securely to mqttplatform.net — can you pull the _secure-mqtt._tcp SRV DNS record so I can see what host and port it's supposed to be using?”
Technical details
Endpoint
GEThttps://dns.intel.rallylive.ca/dns/srv/secure-mqtt-tcp?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to programmatically discover where a domain's secure MQTT (MQTT over TLS) service lives without hardcoding hostnames or ports. Prefer this over generic DNS lookups when specifically targeting the _secure-mqtt._tcp SRV record type, and over manual configuration when building IoT clients or automation pipelines that need to auto-discover broker endpoints from DNS.
Side effects
- Domain has no _secure-mqtt._tcp SRV record configured — returns empty result or NXDOMAIN equivalent
- Invalid or malformed domain name input — may return an error response
- Cloudflare DoH upstream timeout or unavailability — returns a transient error
- Domain exists but SRV record is misconfigured — may return partial or unexpected data
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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