# DNS TXT Record Lookup for assets Subdomain via Cloudflare DoH

> DNS TXT Record Lookup for assets Subdomain via Cloudflare DoH is a paid API for AI agents from dns.intel.rallylive.ca, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-21).

Looks up TXT records for the assets.<domain> subdomain using Cloudflare DNS over HTTPS and returns existence status, records, and TTL.

## Facts

- Endpoint: GET https://dns.intel.rallylive.ca/dns/host/assets/txt?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/dns-txt-record-lookup-for-assets-subdomain-via-cloudflare-doh-96d6eb38
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_sV9G9jmZO318Tb5JrudoE

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-record-lookup-for-assets-subdomain-via-cloudflare-doh-96d6eb38
```

Example prompt: Check if assets.example.com exists and grab its TXT DNS records using Cloudflare DoH — I want to see the records and TTL if it's there.

## When to prefer this

Use this endpoint when you need a quick, targeted check for whether a specific domain has an assets subdomain with TXT records, without enumerating all subdomains. Prefer it over full DNS enumeration tools when you just need to probe a single well-known hostname pattern. Choose it over generic DoH queries when you want a pre-scoped, paid-per-call API that abstracts the Cloudflare DoH request.

## Known failure modes

- Domain does not exist — returns NXDOMAIN or empty records
- assets subdomain has no TXT records — returns empty record set with success code
- Invalid or malformed domain input — may return error or empty result
- Cloudflare DoH service unavailable — lookup fails with network error
- Rate limiting or payment failure for the $0.01 per-call fee

## How this service works

TXT record of assets.<domain>: looks up the assets 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 assets without enumerating subdomains. $0.01 per lookup.

## Output

Returns whether the assets.<domain> subdomain exists, its TXT DNS records (if any), the TTL, and the DNS response code, as resolved by 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-record-lookup-for-assets-subdomain-via-cloudflare-doh-96d6eb38/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)