# SPF Authorizes Gusto - Change Watch

> SPF Authorizes Gusto - 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 Gusto is authorized in a domain's SPF record and returns a diff when the authorization status changes.

## Facts

- Endpoint: GET https://email.intel.rallylive.ca/watch/email/spf-authorizes/gusto?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-gusto-change-watch-d73dcc40
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_dBXbPIt7BMax1BVAG14E-

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-gusto-change-watch-d73dcc40
```

Example prompt: Watch for any changes to whether Gusto is authorized in the SPF record for gusto.com — let me know if the authorization status flips, and show me what changed compared to the last check.

## When to prefer this

Choose this endpoint when you need to continuously monitor whether Gusto remains authorized in a domain's SPF record over time, especially for automated alerting workflows. It is superior to a one-off SPF check because it maintains a 90-day state history per domain and surfaces only diffs, reducing noise. Ideal for IT teams tracking third-party email sender authorization, compliance audits, or post-change validation pipelines.

## Known failure modes

- Domain not previously checked — no baseline exists for comparison so changed will be false on first call
- Domain does not exist or has no SPF record — returns current answer as false with no prior state
- Baseline expired — previous result older than 90 days is purged, treating the next call as a first check
- Network or DNS resolution failure — may return an error or stale result
- Invalid domain input — malformed domain may result in an error response

## How this service works

Change watch for spf authorizes gusto: 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-Gusto answer (true/false), a changed flag (true/false) indicating whether the result differs from the previous call for the same domain within the 90-day retention window, a field-level diff with before/after values for any changed fields, and a timestamp of when the state 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-gusto-change-watch-d73dcc40/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)