# dns-a-autoconfig-subdomain

> dns-a-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 A record of the autoconfig subdomain under a given domain via Cloudflare DoH and reports existence, records, and TTL.

## Facts

- Endpoint: GET https://dns.intel.rallylive.ca/dns/host/autoconfig/a?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-a-autoconfig-subdomain-846a5437
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap__-ouuyHO9zqARf0jSqWX8

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-a-autoconfig-subdomain-846a5437
```

Example prompt: Can you check whether the autoconfig subdomain exists for rallylive.ca — specifically look up the A record for autoconfig.rallylive.ca and tell me what IP it resolves to and the TTL?

## When to prefer this

Use this endpoint when you need a fast, targeted check of whether the autoconfig subdomain (used by email clients for autoconfiguration) exists under a specific domain, without enumerating all subdomains. Prefer this over general DNS tools when you specifically need the A record for autoconfig.<domain> resolved via Cloudflare DoH with a simple existence/IP/TTL result.

## Known failure modes

- Domain does not have an autoconfig subdomain — returns non-existent/NXDOMAIN response
- Invalid or malformed domain name input causes lookup failure
- Cloudflare DoH upstream timeout or error
- Domain exists but autoconfig subdomain has no A record (may have CNAME or other record types instead)
- Network connectivity issues to the dns.intel.rallylive.ca service
- Payment failure for the $0.01 USDC per-call fee

## How this service works

A record of autoconfig.<domain>: looks up the autoconfig host under the domain you give (A 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 autoconfig.<domain> A record exists, the resolved IP address(es), the TTL in seconds, and the DNS response code as returned 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-a-autoconfig-subdomain-846a5437/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)