# DNS SRV Records Change Watch

> DNS SRV Records 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 DNS SRV record lookups for a domain and alerts when results change compared to the previous check, returning a diff of changed fields with before/after values.

## Facts

- Endpoint: GET https://intel.rallylive.ca/watch/dns/srv
- 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-srv-records-change-watch-359473b0
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_KZ4WN_ciReR7JmBL-Sew4

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-srv-records-change-watch-359473b0
```

Example prompt: Keep an eye on the DNS SRV records for _sip._tcp.example.com and let me know if anything has changed since the last time you checked — show me exactly which fields changed and what the before and after values were.

## When to prefer this

Use this endpoint when you need to detect changes in DNS SRV records over time for a specific domain, especially in scheduled or agentic workflows. It is ideal for monitoring service discovery records (e.g. SIP, XMPP, gRPC) where changes signal infrastructure shifts. Prefer this over a one-shot DNS lookup when you need change detection with historical comparison rather than just the current value.

## Known failure modes

- Domain does not exist or has no SRV records — returns empty or NXDOMAIN result
- No previous snapshot exists for the domain (first call) — changed flag may be undefined or false
- Domain provided is malformed — likely returns a validation or input error
- Network/DNS resolution failure — may return a timeout or resolution error
- Payment not processed — x402 payment required error before check runs

## How this service works

Change watch for dns srv records: 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 srv record lookup changes. $0.01 per check.

## Output

Returns the current DNS SRV record lookup result, a boolean indicating whether anything changed since the last check (stored up to 90 days), a field-level diff showing exactly which fields changed with before and after values, and a timestamp of when the records were 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-srv-records-change-watch-359473b0/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)