# Nameserver Health Change Watch

> Nameserver Health 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 nameserver health for a domain and returns whether it changed since the last check, with before/after field diffs and timestamps

## Facts

- Endpoint: GET https://intel.rallylive.ca/watch/dns/nameserver-health
- 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/nameserver-health-change-watch-3a182fa1
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_9QD6Hrs-s7Ws_kymBod_d

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 nameserver-health-change-watch-3a182fa1
```

Example prompt: Keep an eye on nameserver health for example.com — call this on a schedule and let me know if anything changes, including exactly which fields are different and what they were before.

## When to prefer this

Use this endpoint when you need change-detection semantics rather than just a raw nameserver health check — it automatically compares the current result against the last stored result and tells you exactly what changed, so your agent only needs to act when something is different. Prefer this over a plain health check endpoint when running on a schedule and wanting to avoid processing identical results repeatedly.

## Known failure modes

- Domain not provided or invalid — missing required query parameter
- First-time call for a domain returns no diff since no prior result exists
- Stored result older than 90 days is purged, causing a reset of baseline
- Payment not completed — x402 protocol payment of $0.02 USDC required before response is returned
- Nameserver temporarily unreachable during check — health check itself may fail or return partial results

## How this service works

Change watch for nameserver health: 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 nameserver health for a domain changes. $0.01 per check.

## Output

Returns the current nameserver health result, a boolean indicating whether it changed since the previous call for that domain, a list of exactly which fields changed with their before and after values, and a timestamp of when the previous result was last seen. History is 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/nameserver-health-change-watch-3a182fa1/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)