# DKIM Selector protonmail3 Change Watch

> DKIM Selector protonmail3 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 TXT record for the 'protonmail3' selector of a given domain and returns whether it has changed since the last check, along with before/after field diffs.

## Facts

- Endpoint: GET https://dns.intel.rallylive.ca/watch/dns/dkim/protonmail3?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-protonmail3-change-watch-9b62e876
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ZbgDlA54eIfr0TrbYPaHx

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-protonmail3-change-watch-9b62e876
```

Example prompt: Keep an eye on the protonmail3 DKIM selector DNS record for example.com and let me know if it changes — I want to see what changed and when.

## When to prefer this

Choose this endpoint when you need to detect changes to the ProtonMail-specific DKIM selector 'protonmail3' over time rather than just performing a one-off lookup. Ideal for scheduled monitoring pipelines, security audits, or email deliverability watchdogs that need diff-aware change detection with 90-day memory. Prefer this over a plain DKIM lookup endpoint when the goal is alerting on drift rather than fetching the current value.

## Known failure modes

- Domain does not exist — DNS NXDOMAIN response with no record data
- No previous check on file (first call) — 'changed' cannot be determined, returns current value only
- protonmail3 DKIM selector not present for domain — returns empty or missing record
- DNS resolution timeout — upstream Cloudflare DoH query fails
- Previous result expired (older than 90 days) — comparison baseline lost, treated as first call

## How this service works

Change watch for dkim selector protonmail3: 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 protonmail3 DKIM TXT record value for the queried domain, a boolean 'changed' flag indicating whether the record differs from the previous check (stored up to 90 days), the specific fields that changed with before/after values, and the timestamp of when the record was last observed.

## 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-protonmail3-change-watch-9b62e876/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)