# dns-txt-checkout-subdomain

> dns-txt-checkout-subdomain is a paid API for AI agents from dns.intel.rallylive.ca, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-20).

Looks up the TXT DNS records for the checkout subdomain of a given domain via Cloudflare DNS over HTTPS and reports existence, records, and TTL.

## Facts

- Endpoint: GET https://dns.intel.rallylive.ca/dns/host/checkout/txt?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-20
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/dns-txt-checkout-subdomain-34bd3e32
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_KYNJodFFrdx_egBjGJzdW

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-checkout-subdomain-34bd3e32
```

Example prompt: Can you check whether checkout.shopify.com has any TXT DNS records and tell me what they are and their TTL?

## When to prefer this

Use this endpoint when you need a fast, targeted existence check for TXT records specifically on the checkout subdomain of a domain, without enumerating all subdomains. Prefer it over general DNS tools when you only care about the checkout host and want Cloudflare's DoH resolver specifically.

## Known failure modes

- Domain does not exist — returns NXDOMAIN or empty record set
- checkout subdomain has no TXT records — returns empty records with NOERROR
- Malformed domain input — may return error or unexpected result
- Cloudflare DoH service unavailable — lookup fails with network error
- Rate limiting or payment failure — request not processed

## How this service works

TXT record of checkout.<domain>: looks up the checkout host under the domain you give (TXT via Cloudflare DoH) and reports whether it exists, its records and TTL. Quick existence check for common hosts like checkout without enumerating subdomains. $0.01 per lookup.

## Output

Returns whether the TXT record for checkout.<domain> exists, the record values themselves, the TTL, and the DNS response code — sourced from Cloudflare DNS over HTTPS.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/dns-txt-checkout-subdomain-34bd3e32/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from dns.intel.rallylive.ca](https://www.zero.xyz/host/dns.intel.rallylive.ca/llms.txt)