# dns-txt-via-opendns-watch

> dns-txt-via-opendns-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 2026-10-21).

Monitors DNS TXT record changes for a domain via OpenDNS, returning current values, a changed flag, and before/after diffs compared to the previous check (stored 90 days).

## Facts

- Endpoint: GET https://dns.intel.rallylive.ca/watch/dns/txt/via/opendns?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-txt-via-opendns-watch-5268f961
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_JWAhUeu3GhpNlas-GxOLS

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-txt-via-opendns-watch-5268f961
```

Example prompt: Keep an eye on the DNS TXT records for example.com using OpenDNS and let me know if anything changes since the last time you checked — show me what changed, what it was before, and what it is now.

## When to prefer this

Use this endpoint when you need to detect changes in DNS TXT records as answered specifically by OpenDNS (Cisco's resolver), which applies security filtering and may return different results than generic resolvers. Prefer this over raw DNS lookups when you want automated change detection with 90-day history, before/after diffs, and scheduled alerting capability. Useful for monitoring SPF, DKIM, DMARC, or domain verification tokens specifically as seen through OpenDNS's security lens.

## Known failure modes

- Domain not found or NXDOMAIN — returns empty answer with appropriate DNS response code
- No previous check exists for this domain — changed flag may be null or false on first call
- OpenDNS upstream unavailable — check may time out or return an error
- Invalid domain format in query — request rejected
- Rate limiting or payment failure — call blocked

## How this service works

Change watch for dns txt via opendns: 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 TXT record answer from OpenDNS, a boolean 'changed' field indicating whether it differs from the previous check, a list of changed fields with before and after values, and a timestamp of when the record was last seen. Results from previous calls 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-txt-via-opendns-watch-5268f961/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)