# DKIM Selector Check Change Watch

> DKIM Selector Check 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).

Runs a DKIM selector check for a domain, compares it against the previous result (stored up to 90 days), and returns whether the check result has changed along with field-level before/after diffs.

## Facts

- Endpoint: GET https://intel.rallylive.ca/watch/email/dkim
- 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-check-change-watch-3130595c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_cHgl0jnbRGQZXGDW2NN7B

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-check-change-watch-3130595c
```

Example prompt: Keep an eye on the DKIM selector for example.com — run the check now and tell me if anything has changed compared to the last time you checked, including exactly which fields are different and their before/after values.

## When to prefer this

Choose this endpoint when you need to detect changes in a domain's DKIM selector configuration over time rather than just retrieving the current state. It is ideal for scheduled monitoring workflows where you want to be alerted to changes without storing and diffing results yourself, since the service maintains 90-day result history and handles the comparison logic. Prefer it over a plain DKIM check endpoint when change detection, field-level diffs, and temporal tracking are the primary goals.

## Known failure modes

- Domain not found or invalid — check returns an error or empty DKIM result
- No previous result exists (first call) — 'changed' may be null or false with no diff available
- DKIM selector not published for domain — returns current state reflecting missing/invalid selector
- Payment not completed — request rejected before check is run
- Network or DNS lookup timeout — transient failure with no result returned

## How this service works

Change watch for dkim selector check: 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 check for a domain changes. $0.01 per check.

## Output

Returns the current DKIM check result for the domain, a boolean 'changed' flag indicating whether the result differs from the previous call, a field-level diff showing exactly which fields changed with their before and after values, and a timestamp of when the result was last seen. Previous results are retained for 90 days.

## 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-check-change-watch-3130595c/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)