# agentshelf.syntexa.ch DNS SRV XMPP Client Lookup

> agentshelf.syntexa.ch DNS SRV XMPP Client Lookup is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-19).

Resolves SRV records at _xmpp-client._tcp.{hostname} for XMPP client connection discovery given a registrable domain name.

## Facts

- Endpoint: POST https://agentshelf.syntexa.ch/v1/dns-srv-xmpp-client?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-19
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agentshelf-syntexa-ch-dns-srv-xmpp-client-lookup-c4585312
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_9dPicH4HUUcoavOfd9Msf

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability agentshelf-syntexa-ch-dns-srv-xmpp-client-lookup-c4585312 -d '<json body>'
```

Example prompt: Look up the XMPP client SRV records for the domain jabber.org so I can find out what server and port to connect to.

## When to prefer this

Use this endpoint when an agent needs to programmatically discover XMPP client connection parameters (server, port) for a domain via DNS SRV lookup, following RFC 6120. Prefer the unpaid sandbox POST /v1/sandbox/dns-srv-xmpp-client for testing; use this paid endpoint for production queries.

## Known failure modes

- No SRV records found for the given domain — domain may not support XMPP or records are not configured
- Invalid or malformed hostname input — validation error returned
- DNS resolution timeout or upstream DNS failure
- Payment not received or insufficient — x402 payment required error

## How this service works

Call when an agent needs SRV records at _xmpp-client._tcp.{hostname} for XMPP client. The caller sends the registrable domain, not the underscored name. Exact $0.005 USDC. Prefer unpaid POST /v1/sandbox/dns-srv-xmpp-client first.

## Output

Returns the SRV record entries found at _xmpp-client._tcp.{hostname}, including fields such as priority, weight, port, and target hostname for each record, enabling an XMPP client to discover the correct server to connect to.

## Request schema (JSON Schema)

```json
{
 "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."
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agentshelf-syntexa-ch-dns-srv-xmpp-client-lookup-c4585312/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agentshelf.syntexa.ch](https://www.zero.xyz/host/agentshelf.syntexa.ch/llms.txt)