# AgentShelf DNS SRV Kpasswd Lookup

> AgentShelf DNS SRV Kpasswd Lookup is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-19).

Resolves SRV records at _kpasswd._tcp.{hostname} for Kerberos password change service discovery

## Facts

- Endpoint: POST https://agentshelf.syntexa.ch/v1/dns-srv-kpasswd?utm_source=zero.xyz
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-19
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agentshelf-dns-srv-kpasswd-lookup-0394b05b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_aORxmgVcAfdh0RUwKY3PK

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-dns-srv-kpasswd-lookup-0394b05b -d '<json body>'
```

Example prompt: Can you look up the Kerberos password change SRV records for the domain example.com?

## When to prefer this

Use this endpoint when an agent specifically needs to discover Kerberos password change (kpasswd) service endpoints via DNS SRV records. Prefer the free sandbox POST /v1/sandbox/dns-srv-kpasswd endpoint during development or testing to avoid charges. Choose this over general DNS APIs when you need SRV-specific record handling with the _kpasswd._tcp prefix automatically applied.

## Known failure modes

- Domain has no _kpasswd._tcp SRV record configured — empty or NXDOMAIN response
- Invalid or malformed hostname input — validation error
- DNS resolution timeout for the queried domain
- Payment of $0.003 USDC not provided or failed — 402 response

## How this service works

Call when an agent needs SRV records at _kpasswd._tcp.{hostname} for Kerberos password. The caller sends the registrable domain, not the underscored name. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/dns-srv-kpasswd first.

## Output

Returns DNS SRV record data for the _kpasswd._tcp service at the given domain, including priority, weight, port, and target hostname of the Kerberos password change server(s).

## 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-dns-srv-kpasswd-lookup-0394b05b/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)