# AgentShelf DNS TXT DomainConnect Lookup

> AgentShelf DNS TXT DomainConnect Lookup is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-01).

Retrieves the TXT record at the _domainconnect subdomain of a given hostname via DNS lookup

## Facts

- Endpoint: POST https://agentshelf.syntexa.ch/v1/dns-txt-domainconnect?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-01
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agentshelf-dns-txt-domainconnect-lookup-7c939baf
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Kapxtm4e1holo5TGcHkJl

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-dns-txt-domainconnect-lookup-7c939baf -d '<json body>'
```

Example prompt: Can you look up the _domainconnect TXT record for example.com so I can see if it supports the DomainConnect protocol?

## When to prefer this

Use this endpoint when an agent needs to programmatically verify whether a domain supports the DomainConnect protocol and retrieve its provider URL via DNS. Prefer the unpaid sandbox endpoint (POST /v1/sandbox/dns-txt-domainconnect) for testing or non-production workflows before committing the $0.001 USDC fee to the paid endpoint.

## Known failure modes

- Hostname does not exist or has no DNS records — empty or error response
- No _domainconnect TXT record configured for the domain — returns empty result
- Malformed hostname input exceeding 253 characters or empty string — validation error
- DNS timeout or resolution failure — transient network error
- Payment not received or insufficient USDC — 402 Payment Required

## How this service works

Call when an agent needs TXT at _domainconnect. Exact $0.001 USDC. Prefer unpaid POST /v1/sandbox/dns-txt-domainconnect first.

## Output

Returns the TXT record value found at the _domainconnect subdomain of the provided hostname, which typically contains a URL pointing to the DNS provider's DomainConnect service endpoint.

## 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-dns-txt-domainconnect-lookup-7c939baf/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)