# DNS TXT Record Lookup for dev Subdomain

> DNS TXT Record Lookup for dev 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 the TXT DNS records for the dev.<domain> subdomain via Cloudflare DoH and returns whether it exists, its records, and TTL.

## Facts

- Endpoint: GET https://dns.intel.rallylive.ca/dns/host/dev/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-dev-subdomain-81679e2d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_kcDsubXkh8a-5UQfLGFig

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-dev-subdomain-81679e2d
```

Example prompt: Can you check if dev.example.com has any TXT records and what they say?

## When to prefer this

Use this endpoint when you need a targeted, fast TXT record check specifically for the dev subdomain of a domain without performing broader subdomain enumeration. Prefer this over generic DNS lookup tools when you only care about the dev host and want a low-cost ($0.01), single-purpose check via Cloudflare DoH for reliability and consistency.

## Known failure modes

- Domain does not exist — returns NXDOMAIN response code with no records
- dev subdomain not configured — host not found, empty records returned
- Invalid domain format — may return an error or empty result
- Cloudflare DoH unreachable — service timeout or connectivity error
- Rate limiting or payment failure — request rejected before DNS lookup is performed

## How this service works

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

## Output

Returns whether the dev.<domain> subdomain exists in DNS, any TXT record values associated with it, and the TTL of those records. Also includes the DNS response code (e.g. NOERROR or NXDOMAIN) indicating whether the host was found.

## 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-dev-subdomain-81679e2d/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)