# dns-txt-blog-subdomain

> dns-txt-blog-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 blog.<domain> subdomain via Cloudflare DoH and reports existence, records, and TTL

## Facts

- Endpoint: GET https://dns.intel.rallylive.ca/dns/host/blog/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-blog-subdomain-e7339677
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ClGeHBFwalV1r77N3KCc1

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-blog-subdomain-e7339677
```

Example prompt: Can you check whether blog.acmecorp.com exists in DNS and grab its TXT records and TTL using Cloudflare DoH?

## When to prefer this

Use this endpoint when you need a quick, targeted check for TXT records specifically on the blog subdomain of a domain, without enumerating all subdomains. Prefer it over generic DNS lookup tools when you want a purpose-built, low-cost check focused solely on the blog host via Cloudflare DoH.

## Known failure modes

- NXDOMAIN returned when blog subdomain does not exist
- No TXT records present even if host exists (returns empty record set)
- Invalid or malformed domain input causes lookup failure
- Rate limiting or DoH upstream timeout from Cloudflare
- Payment not processed, endpoint returns 402

## How this service works

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

## Output

Returns whether the blog.<domain> subdomain exists in DNS, along with any TXT record values and their TTL as answered by Cloudflare DoH, plus the DNS response code (e.g. NOERROR, NXDOMAIN).

## 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-blog-subdomain-e7339677/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)