# SPF Authorizes Drip - Change Watch

> SPF Authorizes Drip - 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 Drip as a sender, alerting you when that authorization status changes between checks.

## Facts

- Endpoint: GET https://email.intel.rallylive.ca/watch/email/spf-authorizes/drip?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-drip-change-watch-21ad140e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_rqtiMEXNwkw_Dw4dONRHI

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-drip-change-watch-21ad140e
```

Example prompt: Keep an eye on whether acme.com's SPF record still authorizes Drip as a sender — let me know if that changes compared to the last time you checked.

## When to prefer this

Use this endpoint when you need to detect changes in whether a domain's SPF record authorizes Drip specifically, rather than just fetching the current SPF status. Ideal for scheduled monitoring workflows, deliverability audits, and alerting pipelines where you care about drift over time rather than a one-off lookup.

## Known failure modes

- Domain not found or invalid domain format returns an error
- No previous check exists for the domain so changed comparison is unavailable on first call
- DNS lookup failure via Cloudflare DoH causes indeterminate result
- Payment failure (x402) blocks the check from executing
- Stale baseline if 90-day retention window has expired, losing comparison history

## How this service works

Change watch for spf authorizes drip: 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 SPF-authorizes-Drip boolean answer, a changed true/false flag comparing to the previous call for the same domain (stored up to 90 days), the specific fields that changed with before and after values, and the timestamp of when the result 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-drip-change-watch-21ad140e/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)