# DKIM Selector Scan Change Watch

> DKIM Selector Scan Change Watch is a paid API for AI agents from intel.rallylive.ca, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-14).

Monitors DKIM selector scan results for a domain and reports whether the results have changed since the last check, including before/after field diffs.

## Facts

- Endpoint: GET https://intel.rallylive.ca/watch/dns/dkim-selectors
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/dkim-selector-scan-change-watch-7ac30d44
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_QuMy3gwludZmATOkdKRff

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-scan-change-watch-7ac30d44
```

Example prompt: Check if the DKIM selector scan for example.com has changed since the last time you checked — I want to know exactly which fields are different and what the old vs new values are.

## When to prefer this

Use this endpoint when you need to detect changes in DKIM selector DNS records over time without storing previous results yourself — it handles the diffing and 90-day history internally. Prefer it for scheduled monitoring workflows where you want field-level before/after change details rather than just raw current scan data.

## Known failure modes

- Domain not found or invalid domain name returns an error
- First call for a domain has no previous result to compare against, so 'changed' may be false or undefined
- DNS lookup failures for the target domain may result in empty or error scan results
- Stale comparison data if the domain was not checked within the 90-day retention window

## How this service works

Change watch for dkim selector scan: runs the check and compares it with the result from your previous call for the same domain (kept 90 days), returning the current answer, changed true/false, exactly which fields changed with before/after values, and when it was last seen. Call it on a schedule to be told when dkim selector scan changes. $0.01 per check.

## Output

Returns the current DKIM selector scan result, a boolean 'changed' flag indicating whether it differs from the previous call for the same domain, a list of exactly which fields changed with their before and after values, and the timestamp of when the result was last seen. Results from previous calls are retained for 90 days for comparison.

## 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-scan-change-watch-7ac30d44/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from intel.rallylive.ca](https://www.zero.xyz/host/intel.rallylive.ca/llms.txt)