# DKIM Selector Lookup – Namecheap

> DKIM Selector Lookup – Namecheap is a paid API for AI agents from dns.intel.rallylive.ca, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-18).

Looks up and parses the DKIM public key for the 'namecheap' selector of a given domain by querying namecheap._domainkey.<domain> via Cloudflare DoH, returning key type, length, testing flag, and revocation status.

## Facts

- Endpoint: GET https://dns.intel.rallylive.ca/dns/dkim/namecheap
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-18
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/dkim-selector-lookup-namecheap-acf108f0
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_E-I179wobbikhm9XNKZOK

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-lookup-namecheap-acf108f0
```

Example prompt: Can you check the DKIM namecheap selector for example.com — I want to know if the public key is valid, what type and length it is, and whether it's been revoked or is just in testing mode?

## When to prefer this

Use this endpoint specifically when you need to verify or audit the 'namecheap' DKIM selector for a domain — particularly for domains whose email is routed or signed through Namecheap's mail infrastructure. It is more specific than a generic DKIM lookup because it is hardcoded to the namecheap selector and uses Cloudflare DoH for reliable resolution. Prefer this over general DNS tools when you want structured, parsed output (key length, revocation status, testing flag) without manually parsing raw TXT records.

## Known failure modes

- Domain has no namecheap._domainkey TXT record — returns not-found or empty result
- Key is revoked (p= is empty) — returns revoked status
- DNS lookup failure via Cloudflare DoH — may return timeout or resolution error
- Malformed TXT record that cannot be parsed — returns parse error
- Domain does not exist — DNS NXDOMAIN response

## How this service works

DKIM public key for selector "namecheap" of a domain: looks up namecheap._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 namecheap selector will verify. $0.01 per lookup.

## Output

Returns parsed details from the namecheap._domainkey.<domain> TXT record, including the DKIM version (v=), key type (k=), public key and its bit length, whether the testing flag is set, and whether the key is revoked (empty p= field), confirming if email signed with the namecheap selector will successfully verify.

## 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-lookup-namecheap-acf108f0/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)