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DNS SRV PubSub Record Lookup
x402
DNS SRV PubSub Record Lookup is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.006/call, status unknown (last checked 2026-10-11).
Resolves SRV records at _pubsub._tcp.{hostname} for XMPP pubsub service discovery given a registrable domain name
Price / call$0.006
Success—
StatusUnknown
How this service works
Call when an agent needs SRV records at _pubsub._tcp.{hostname} for XMPP pubsub. The caller sends the registrable domain, not the underscored name. Send JSON {"hostname":"example.com"}. Exact $0.006 USDC on Base. Try unpaid POST /v1/sandbox/dns-srv-pubsub first.
Output
Returns the SRV record(s) found at _pubsub._tcp.{hostname}, including fields such as priority, weight, port, and target hostname for each record, enabling XMPP pubsub service discovery.
Example use cases
XMPP pubsub server discovery
“Can you find the XMPP pubsub SRV records for the domain xmpp.example.com? I need to know which server and port to connect to for pubsub.”
Validate pubsub DNS configuration
“Check whether conference.mycompany.com has _pubsub._tcp SRV records set up correctly so I can confirm pubsub is properly configured.”
Federated XMPP integration setup
“I'm setting up federation with prosody.im — can you pull the _pubsub._tcp SRV records for that domain so I know where to route pubsub traffic?”
Technical details
Endpoint
POSThttps://agentshelf.syntexa.ch/v1/dns-srv-pubsub?utm_source=zero.xyzWhen to prefer
Use this endpoint when an agent specifically needs to discover XMPP pubsub service endpoints via DNS SRV records (_pubsub._tcp) for a given registrable domain. Prefer the free sandbox endpoint POST /v1/sandbox/dns-srv-pubsub first for testing. Choose this paid endpoint only when a real, authoritative DNS SRV pubsub lookup is required in production at $0.006 USDC per call.
Side effects
- Domain has no _pubsub._tcp SRV records — returns empty result or NXDOMAIN
- Invalid or malformed hostname input — validation error
- DNS resolution timeout or upstream failure — service error
- Hostname exceeds 253-character limit — schema validation error
- Payment not provided or insufficient — 402 Payment Required
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| hostname | string | Public DNS hostname such as example.com. Not a URL, not an IP literal, and not a private name. |
Tags
x402
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