# agentshelf.syntexa.ch DNS SRV HTTPS Lookup

> agentshelf.syntexa.ch DNS SRV HTTPS Lookup is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-18).

Looks up SRV records at _https._tcp.{hostname} for a given registrable domain to discover HTTPS service endpoints.

## Facts

- Endpoint: POST https://agentshelf.syntexa.ch/v1/dns-srv-https?utm_source=zero.xyz
- Price: $0.001/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-https-lookup-d62ff82b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_w5AqdzM4LVcfFK4iNr1bd

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-https-lookup-d62ff82b -d '<json body>'
```

Example prompt: Can you look up the SRV DNS records for HTTPS service discovery on example.com?

## When to prefer this

Use this endpoint when you need to programmatically resolve _https._tcp SRV DNS records for HTTPS service discovery on a given registrable domain. Prefer the unpaid POST /v1/sandbox/dns-srv-https endpoint first for testing; use this paid endpoint for production queries where reliable resolution is required.

## Known failure modes

- Domain not found or does not exist — DNS NXDOMAIN response
- No SRV records at _https._tcp for the given domain
- Invalid or malformed hostname input exceeding 253 characters
- Network or resolver timeout during DNS query
- Payment failure preventing request processing

## How this service works

Call when an agent needs SRV records at _https._tcp.{hostname} for HTTPS. The caller sends the registrable domain, not the underscored name. Exact $0.001 USDC. Prefer unpaid POST /v1/sandbox/dns-srv-https first.

## Output

Returns the SRV resource records found at _https._tcp.{hostname}, including fields such as priority, weight, port, and target hostname for each record. If no records exist, returns an empty result or appropriate DNS response.

## 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-https-lookup-d62ff82b/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)