# DKIM Selector 'cpanel' Public Key Lookup

> DKIM Selector 'cpanel' Public Key Lookup is a paid API for AI agents from dns.intel.rallylive.ca, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-20).

Looks up and parses the DKIM public key record for the 'cpanel' selector of a given domain, confirming key validity, type, length, and revocation status.

## Facts

- Endpoint: GET https://dns.intel.rallylive.ca/dns/dkim/cpanel?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-20
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/dkim-selector-cpanel-public-key-lookup-7db06df8
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_8Lv02yo2wyjVKgmLvunZx

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 dkim-selector-cpanel-public-key-lookup-7db06df8
```

Example prompt: Can you check whether the DKIM 'cpanel' selector for example.com is properly set up — I want to know the key type, length, and whether it's been revoked or is still in test mode?

## When to prefer this

Use this endpoint when you specifically need to inspect the 'cpanel' DKIM selector for a domain — typically for domains hosted on cPanel servers. Prefer this over generic DNS TXT lookups when you need structured DKIM field parsing (key type, length, revocation status, testing flag) rather than raw TXT record content. Ideal for email deliverability audits, post-migration checks, and security reviews of cPanel-managed domains.

## Known failure modes

- Domain has no cpanel._domainkey TXT record — returns NXDOMAIN or empty result
- Key is revoked (p= is empty) — returned but flagged as invalid
- DNS lookup fails due to Cloudflare DoH timeout or network error
- Malformed TXT record that cannot be parsed into DKIM fields
- Domain input is invalid or missing — request returns an error

## How this service works

DKIM public key for selector "cpanel" of a domain: looks up cpanel._domainkey.<domain> (TXT, Cloudflare DoH) and parses v=, k=, key type, public-key length, testing flag and whether the key is revoked (empty p=). Confirms that mail signed with the cpanel selector will verify. $0.01 per lookup.

## Output

Returns parsed details of the cpanel._domainkey.<domain> TXT record including: the full DKIM version (v=) tag, key type (k=, e.g. rsa), public key length in bits, whether the testing flag (t=y) is present, and whether the key is revoked (empty p= field). Confirms whether mail signed with the cpanel selector will pass DKIM verification.

## 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/dkim-selector-cpanel-public-key-lookup-7db06df8/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)