# DNS A Record Change Watch via CleanBrowsing

> DNS A Record Change Watch via CleanBrowsing is a paid API for AI agents from dns.intel.rallylive.ca, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-21).

Monitors DNS A record responses from CleanBrowsing for a domain, detecting changes by comparing current results against the previous call (stored 90 days) and returning change status with before/after diffs.

## Facts

- Endpoint: GET https://dns.intel.rallylive.ca/watch/dns/a/via/cleanbrowsing?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/dns-a-record-change-watch-via-cleanbrowsing-2add6a6e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_HCNccwG8dvGTgMJ3laeWk

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 dns-a-record-change-watch-via-cleanbrowsing-2add6a6e
```

Example prompt: Keep an eye on the DNS A record for example.com using CleanBrowsing and let me know if it changes — compare it against what you saw last time and show me exactly what's different.

## When to prefer this

Choose this endpoint when you specifically want to monitor DNS A record changes as seen through the CleanBrowsing resolver (which applies content filtering), rather than unfiltered resolvers like Google or Cloudflare. Ideal for scheduled polling workflows where you need change detection with historical diffing rather than just a raw lookup. Prefer over raw DNS lookup endpoints when you need before/after comparison and change alerting.

## Known failure modes

- Domain not previously queried — no baseline to compare against (changed may default to false or null)
- CleanBrowsing resolver unavailable — DNS query fails
- Invalid or non-existent domain — empty or NXDOMAIN response
- 90-day retention window exceeded — previous result no longer available for comparison
- Payment failure — $0.02 USDC charge not processed

## How this service works

Change watch for dns a via cleanbrowsing: 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 DNS A record answer from CleanBrowsing, a boolean 'changed' flag, a list of fields that changed with before/after values, and a timestamp of when the record was last seen. Previous results 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/dns-a-record-change-watch-via-cleanbrowsing-2add6a6e/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)