# DNS SRV Record Lookup for NFS (_nfs._tcp)

> DNS SRV Record Lookup for NFS (_nfs._tcp) is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.006/call, status unknown (last checked 2026-10-24).

Returns SRV records at _nfs._tcp.{hostname} for a given registrable domain, enabling NFS service discovery via DNS.

## Facts

- Endpoint: POST https://agentshelf.syntexa.ch/v1/dns-srv-nfs?utm_source=zero.xyz
- Price: $0.006/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-24
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/dns-srv-record-lookup-for-nfs-nfs-tcp-5d39c151
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_WJffxCflQuvCwlMMLrJIW

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 dns-srv-record-lookup-for-nfs-nfs-tcp-5d39c151 -d '<json body>'
```

Example prompt: Can you look up the NFS SRV DNS records for example.com so I know which host and port is serving NFS for that domain?

## When to prefer this

Use this endpoint when an agent needs programmatic NFS service discovery via DNS SRV records and requires the paid, reliable production path. Prefer the free sandbox endpoint (/v1/sandbox/dns-srv-nfs) first to avoid unnecessary cost; fall back to this paid endpoint only when the sandbox is unavailable or rate-limited.

## Known failure modes

- Domain not found or no SRV records published — returns empty result or error
- Invalid or malformed hostname input — validation error
- DNS resolution timeout — transient network failure
- Domain exceeds 253 character limit — schema validation error

## How this service works

Call when an agent needs SRV records at _nfs._tcp.{hostname} for NFS. The caller sends the registrable domain, not the underscored name. Exact $0.006 USDC. Prefer unpaid POST /v1/sandbox/dns-srv-nfs first.

## Output

Returns DNS SRV record data for the _nfs._tcp subdomain of the provided hostname, including priority, weight, port, and target host fields that identify where NFS service is available.

## 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/dns-srv-record-lookup-for-nfs-nfs-tcp-5d39c151/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)