# DNS SRV Record Lookup for KMS VLMCS

> DNS SRV Record Lookup for KMS VLMCS is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.006/call, status unknown (last checked 2026-10-11).

Looks up SRV records at _vlmcs._tcp.{hostname} to locate KMS (Key Management Service) servers for a given domain

## Facts

- Endpoint: POST https://agentshelf.syntexa.ch/v1/dns-srv-vlmcs?utm_source=zero.xyz
- Price: $0.006/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/dns-srv-record-lookup-for-kms-vlmcs-e4c1130e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_kxK284ZvluaiwZ5_fJaH8

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-kms-vlmcs-e4c1130e -d '<json body>'
```

Example prompt: Look up the KMS activation server SRV record for the domain contoso.com — I need to find what _vlmcs._tcp host and port are configured for it.

## When to prefer this

Use this endpoint when an agent needs to programmatically discover or audit KMS (Key Management Service) server configuration for a domain via its _vlmcs._tcp SRV DNS record, without needing to query DNS directly. Prefer the free sandbox endpoint POST /v1/sandbox/dns-srv-vlmcs when available to avoid the $0.006 USDC charge.

## Known failure modes

- Domain not found or no SRV record exists at _vlmcs._tcp.{hostname} — returns empty or error response
- Invalid or malformed hostname input — validation error
- DNS resolution timeout or upstream DNS failure
- Hostname exceeds 253 character limit

## How this service works

Call when an agent needs SRV records at _vlmcs._tcp.{hostname} for KMS. The caller sends the registrable domain, not the underscored name. Send JSON {"hostname":"example.com"}. Exact $0.006 USDC on Base. Try unpaid POST /v1/sandbox/dns-srv-vlmcs first.

## Output

Returns the SRV record details found at _vlmcs._tcp.{hostname}, including the target KMS server hostname, port number, priority, and weight values that DNS has published for that domain's Key Management Service.

## 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-kms-vlmcs-e4c1130e/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)