# SPF Authorizes Barracuda - Change Watch

> SPF Authorizes Barracuda - Change Watch is a paid API for AI agents from email.intel.rallylive.ca, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-24).

Monitors whether a domain's SPF record authorizes Barracuda mail servers, alerting when the authorization status changes between checks.

## Facts

- Endpoint: GET https://email.intel.rallylive.ca/watch/email/spf-authorizes/barracuda?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-24
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/spf-authorizes-barracuda-change-watch-3c73b289
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_GZb_e6AMY1pMD8K8O50k1

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 spf-authorizes-barracuda-change-watch-3c73b289
```

Example prompt: Keep an eye on whether acmecorp.com's SPF record authorizes Barracuda, and let me know if the authorization status changes from what it was last time you checked.

## When to prefer this

Choose this endpoint when you need change-detection semantics — you want to know not just the current SPF-Barracuda authorization state, but whether it has changed since your last check. Ideal for scheduled polling workflows, alerting pipelines, or compliance monitoring where you care about delta rather than raw current state.

## Known failure modes

- Domain not found or invalid domain name causes lookup failure
- No previous check exists within the 90-day window, so no diff is available on first call
- DNS resolution errors via Cloudflare DoH preventing SPF record retrieval
- Malformed SPF record preventing accurate parsing
- Payment failure ($0.02 USDC) blocks the check from executing

## How this service works

Change watch for spf authorizes barracuda: 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 boolean answer (does the domain's SPF authorize Barracuda?), a changed flag indicating whether the result differs from the previous check stored up to 90 days ago, a list of fields that changed with their before and after values, and the timestamp of when the status 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/spf-authorizes-barracuda-change-watch-3c73b289/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from email.intel.rallylive.ca](https://www.zero.xyz/host/email.intel.rallylive.ca/llms.txt)