# dns-txt-test-subdomain

> dns-txt-test-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 2026-10-21).

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

## Facts

- Endpoint: GET https://dns.intel.rallylive.ca/dns/host/test/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-test-subdomain-419c0666
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_MHGFv8zW69N8MCrJ19VO4

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-test-subdomain-419c0666
```

Example prompt: Can you check if test.acmecorp.com has any TXT records in DNS, and tell me what they say and how long they're cached?

## When to prefer this

Use this endpoint when you specifically need to check the TXT DNS records for the 'test' subdomain of a given domain quickly and cheaply ($0.01), without enumerating all subdomains. Prefer this over generic DNS tools when you want a targeted Cloudflare-resolved existence check for the common 'test' host pattern.

## Known failure modes

- Domain does not exist — returns NXDOMAIN or empty record set
- test subdomain has no TXT records — returns empty records with existence flag false
- Network or Cloudflare DoH resolver unavailable — returns error
- Invalid or malformed domain input — returns validation error
- Payment failure — request blocked due to x402 payment requirement

## How this service works

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

## Output

Returns whether the test.<domain> subdomain exists in DNS, its TXT record values (if any), the TTL, and a response code — sourced from Cloudflare's DNS over HTTPS resolver.

## 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-test-subdomain-419c0666/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)