# agentshelf.syntexa.ch DNS SRV FTP Lookup

> agentshelf.syntexa.ch DNS SRV FTP Lookup is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-02).

Resolves SRV records at _ftp._tcp.{hostname} for FTP service discovery, given a registrable domain name

## Facts

- Endpoint: POST https://agentshelf.syntexa.ch/v1/dns-srv-ftp?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agentshelf-syntexa-ch-dns-srv-ftp-lookup-07f23a01
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_feK_Qtt3VgHHFbIVo4hVu

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-ftp-lookup-07f23a01 -d '<json body>'
```

Example prompt: Look up the FTP SRV record for example.com — I need to know what server and port the FTP service is advertised on via DNS.

## When to prefer this

Use this endpoint when an agent needs to programmatically discover FTP service endpoints via DNS SRV records for a given domain, particularly in automated infrastructure auditing, FTP client configuration, or network service discovery workflows. Prefer the free sandbox endpoint (/v1/sandbox/dns-srv-ftp) when available; use this paid endpoint only when the sandbox is unavailable or a production-grade response is required.

## Known failure modes

- Domain has no _ftp._tcp SRV record — returns empty or NXDOMAIN equivalent
- Invalid hostname format causes input validation error
- DNS resolution timeout if upstream resolver is slow
- Malformed hostname (e.g., exceeds 253 characters) rejected by input schema

## How this service works

Call when an agent needs SRV records at _ftp._tcp.{hostname} for FTP. The caller sends the registrable domain, not the underscored name. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/dns-srv-ftp first.

## Output

Returns the SRV record data found at _ftp._tcp.{hostname}, including priority, weight, port number, and target hostname for the FTP service, or indicates no record exists if none is found.

## 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-ftp-lookup-07f23a01/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)