# DNS TXT TLS-RPT Record Lookup (agentshelf.syntexa.ch)

> DNS TXT TLS-RPT Record Lookup (agentshelf.syntexa.ch) is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-23).

Retrieves the TLS-RPT TXT DNS record (starting with v=TLSRPTv1) for a given hostname from the _smtp._tls subdomain

## Facts

- Endpoint: POST https://agentshelf.syntexa.ch/v1/dns-txt-tls-rpt?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-23
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/dns-txt-tls-rpt-record-lookup-agentshelf-syntexa-ch-d5f1f6de
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_rqVhas_uhjABS4Cem4gJi

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-txt-tls-rpt-record-lookup-agentshelf-syntexa-ch-d5f1f6de -d '<json body>'
```

Example prompt: Can you look up the TLS-RPT DNS TXT record for example.com — I need to see the v=TLSRPTv1 entry at _smtp._tls?

## When to prefer this

Use this endpoint when you need to programmatically retrieve the TLS-RPT DNS TXT record for a specific hostname and cannot perform DNS lookups directly. Prefer the free sandbox endpoint POST /v1/sandbox/dns-txt-tls-rpt when available; use this paid endpoint when the sandbox is unavailable or rate-limited. Choose this over generic DNS lookup tools when you specifically need the _smtp._tls TXT record in a structured, agent-callable format.

## Known failure modes

- Domain does not have a _smtp._tls TXT record configured — returns empty or not found response
- Invalid or malformed hostname input — returns validation error
- DNS resolution failure for the queried hostname — returns lookup error
- TXT record exists but does not start with v=TLSRPTv1 — may return raw value without matching expected format

## How this service works

Call when an agent needs TXT at _smtp._tls that starts with v=TLSRPTv1. Exact $0.005 USDC. Prefer unpaid POST /v1/sandbox/dns-txt-tls-rpt first.

## Output

The TXT record value found at _smtp._tls.<hostname>, expected to begin with v=TLSRPTv1, containing the TLS reporting policy for the domain including reporting URIs.

## 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-txt-tls-rpt-record-lookup-agentshelf-syntexa-ch-d5f1f6de/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)