# DNS CNAME Record Change Watch

> DNS CNAME Record 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 a hostname's DNS CNAME record and reports whether it has changed since the last check, including field-level before/after diffs.

## Facts

- Endpoint: GET https://intel.rallylive.ca/watch/dns/cname
- 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/dns-cname-record-change-watch-19508c0e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_YORpjrHSgLDfTRyTFPyVh

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-cname-record-change-watch-19508c0e
```

Example prompt: Keep an eye on the CNAME record for shop.example.com and let me know if it changes — compare it against the last result and tell me exactly what fields are different.

## When to prefer this

Choose this endpoint when you need change-detection semantics for a DNS CNAME record rather than just a raw lookup — it maintains a 90-day history of prior results and returns structured field-level diffs, making it ideal for scheduled monitoring workflows where you need to know exactly what changed and when, without building your own diffing logic.

## Known failure modes

- Hostname does not exist — DNS NXDOMAIN or resolution failure returned
- No previous result stored (first call for this hostname) — changed flag may be false or undefined
- Hostname parameter missing or malformed — validation error returned
- DNS lookup timeout or upstream resolver error — transient failure
- Previous result expired (older than 90 days) — baseline lost, treated as new record

## How this service works

Change watch for dns cname record: 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 dns cname record lookup for a hostname changes. $0.01 per check.

## Output

Returns the current CNAME record answer for the hostname, a boolean 'changed' flag indicating whether it differs from the previous check (stored up to 90 days), an itemized diff of exactly which fields changed 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/dns-cname-record-change-watch-19508c0e/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)