# DKIM Selector Protonmail Change Watch

> DKIM Selector Protonmail 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 2026-10-19).

Monitors the ProtonMail DKIM selector DNS record for a domain and returns whether it has changed since the last check, with before/after diffs.

## Facts

- Endpoint: GET https://dns.intel.rallylive.ca/watch/dns/dkim/protonmail?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-19
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/dkim-selector-protonmail-change-watch-108e296a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_EXgTrGxL-3NWvfEy8TTjs

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-protonmail-change-watch-108e296a
```

Example prompt: Keep an eye on the ProtonMail DKIM selector DNS record for example.com and let me know if it has changed since the last check — show me what changed and when it was last seen.

## When to prefer this

Use this endpoint when you need to detect changes to a domain's ProtonMail DKIM selector record over time, especially for automated alerting or compliance monitoring. Prefer this over a plain DKIM lookup when you need change detection with historical comparison rather than just the current value.

## Known failure modes

- Domain not found or DNS lookup fails — returns error with no DKIM data
- No previous check stored (first call) — changed will be false/undefined with no before value
- ProtonMail DKIM selector does not exist for domain — returns empty or NXDOMAIN result
- Payment not completed — request rejected before DNS lookup

## How this service works

Change watch for dkim selector protonmail: 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 ProtonMail DKIM selector record value, a boolean indicating whether it changed since the previous check (stored up to 90 days), a diff of any changed fields with 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-protonmail-change-watch-108e296a/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)