# DKIM Selector k1 Change Watch

> DKIM Selector k1 Change Watch is a paid API for AI agents from dns.intel.rallylive.ca, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-20).

Monitors the DKIM selector k1 DNS record for a domain, detects changes by comparing against a stored baseline, and reports what changed and when.

## Facts

- Endpoint: GET https://dns.intel.rallylive.ca/watch/dns/dkim/k1?utm_source=zero.xyz
- Price: $0.02/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-k1-change-watch-b35b5423
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_jxw8xsDzioc7LpkivSaD2

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-k1-change-watch-b35b5423
```

Example prompt: Watch the DKIM selector k1 record for example.com and let me know if it has changed since the last check — show me what fields changed and what the before and after values were.

## When to prefer this

Use this endpoint when you need ongoing change detection specifically for the DKIM selector k1 DNS record, rather than a one-time lookup. It is ideal for scheduling periodic checks to detect unauthorized key rotations, validate that a new DKIM key has propagated, or audit email authentication configuration changes over time. Prefer this over a plain DKIM lookup when you need the before/after diff and change history.

## Known failure modes

- Domain not found or invalid domain name provided — returns an error or empty record
- No prior baseline exists (first call for a domain) — changed may be false or indeterminate
- DKIM k1 selector does not exist for the domain — returns NXDOMAIN or empty record response
- DNS resolution failure or upstream resolver unavailable — may return timeout or error
- Payment not processed — request blocked with 402 response

## How this service works

Change watch for dkim selector k1: runs the check, compares it with the result from your previous call for the same domain (kept 90 days) and returns the current answer, changed true/false, the fields that changed with before/after values, and when it was last seen. Schedule it to be alerted when this changes. $0.02 per check.

## Output

Returns the current DKIM k1 selector record value, a boolean indicating whether it changed since the previous call for that domain (baseline kept 90 days), a list of fields that changed with their before and after values, and a timestamp of when the record was last seen.

## 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-k1-change-watch-b35b5423/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)