# dns-txt-autoconfig-subdomain

> dns-txt-autoconfig-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 2026-10-22).

Looks up the TXT record of autoconfig.<domain> via Cloudflare DNS over HTTPS and reports existence, records, and TTL

## Facts

- Endpoint: GET https://dns.intel.rallylive.ca/dns/host/autoconfig/txt?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-22
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/dns-txt-autoconfig-subdomain-40573d57
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap__1Hy_8I_AO9iPrfT2445S

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-autoconfig-subdomain-40573d57
```

Example prompt: Check if there's a TXT record on the autoconfig subdomain for example.com — I want to see whether it exists, what the record says, and what the TTL is.

## When to prefer this

Use this endpoint when you specifically need the TXT record for the autoconfig subdomain of a given domain, without enumerating subdomains. It is faster and cheaper than a full subdomain scan and is ideal for verifying email autoconfiguration DNS entries (RFC 6186 / Mozilla-style autoconfig). Prefer it over generic DNS TXT lookup tools when the target is always the autoconfig.<domain> host pattern.

## Known failure modes

- Domain does not exist — returns NXDOMAIN response code with no records
- autoconfig subdomain has no TXT record — record set is empty but domain resolves
- Network or upstream Cloudflare DoH failure — service may return error or timeout
- Malformed domain input — may return error or unexpected result
- Domain with DNSSEC issues — may cause resolution failure

## How this service works

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

## Output

Returns whether the TXT record at autoconfig.<domain> exists, the record values (string data), the TTL in seconds, and the DNS response code (e.g. NOERROR or NXDOMAIN), as answered by Cloudflare DoH.

## 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-autoconfig-subdomain-40573d57/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)