# agentshelf.syntexa.ch DNS SRV RADIUS Lookup

> agentshelf.syntexa.ch DNS SRV RADIUS Lookup is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.007/call, status unknown (last checked 2026-10-18).

Looks up SRV records at _radius._udp.{hostname} for RADIUS service discovery, given a registrable domain name

## Facts

- Endpoint: POST https://agentshelf.syntexa.ch/v1/dns-srv-radius?utm_source=zero.xyz
- Price: $0.007/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-18
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agentshelf-syntexa-ch-dns-srv-radius-lookup-61b2296d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Dsi6kv99z3gtPTIPEdodc

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-radius-lookup-61b2296d -d '<json body>'
```

Example prompt: Can you look up the RADIUS SRV DNS records for example.com to find the RADIUS server host and port?

## When to prefer this

Use this endpoint when an agent needs to programmatically discover RADIUS server endpoints (host and port) for a given domain via standard DNS SRV records, without manually constructing the _radius._udp prefix. Prefer the free sandbox POST /v1/sandbox/dns-srv-radius endpoint first to avoid charges during development or testing.

## Known failure modes

- No SRV record found at _radius._udp.{hostname} — domain may not publish RADIUS SRV records
- Invalid or malformed hostname input — must be a valid registrable domain (1-253 chars)
- DNS resolution timeout or upstream DNS failure
- Payment failure — exact $0.007 USDC required via x402
- Domain exists but RADIUS SRV record not configured

## How this service works

Call when an agent needs SRV records at _radius._udp.{hostname} for RADIUS. The caller sends the registrable domain, not the underscored name. Exact $0.007 USDC. Prefer unpaid POST /v1/sandbox/dns-srv-radius first.

## Output

Returns the SRV record details found at _radius._udp.{hostname}, typically including priority, weight, port, and target hostname of the RADIUS server, enabling clients to locate and connect to the correct RADIUS authentication server.

## 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-radius-lookup-61b2296d/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)