# SPF Authorizes SparkPost Watch

> SPF Authorizes SparkPost 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 SparkPost to send its mail, alerting when the answer changes between checks.

## Facts

- Endpoint: GET https://email.intel.rallylive.ca/watch/email/spf-authorizes/sparkpost?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-sparkpost-watch-a32ecf60
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_M97cKO5K8GGwDo48GTyPK

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-sparkpost-watch-a32ecf60
```

Example prompt: Watch for any changes in whether acmecorp.com's SPF record authorizes SparkPost to send email on its behalf — let me know if the answer ever flips compared to your last check.

## When to prefer this

Use this endpoint when you need ongoing surveillance of a specific domain's SPF relationship with SparkPost rather than a one-time lookup. It is ideal for scheduled agent workflows that need to detect configuration drift, supply-chain email changes, or phishing infrastructure changes over time. Prefer it over a plain SPF check when you want change detection semantics and historical comparison built in.

## Known failure modes

- Domain has no SPF TXT record — returns current answer as false with no change context
- First-time check for a domain — no prior result to compare against, changed will be false
- Domain does not exist or DNS lookup fails — error response from Cloudflare DoH
- Rate limiting or payment failure — 402 response if x402 payment not processed
- Stored result expired after 90 days — comparison baseline lost, treated as first call

## How this service works

Change watch for spf authorizes sparkpost: 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-SparkPost answer (true/false), a 'changed' boolean comparing against the previous check stored for up to 90 days, the specific 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-sparkpost-watch-a32ecf60/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)