# Security Grade Change Watch

> Security Grade Change Watch is a paid API for AI agents from intel.rallylive.ca, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-14).

Monitors a website's security grade (A–F) and alerts when it changes compared to the previous check, returning the current grade, a changed flag, and field-level before/after diffs.

## Facts

- Endpoint: GET https://intel.rallylive.ca/watch/monitor/security-grade
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/security-grade-change-watch-a02b6b73
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_HYCCuXTG1VwaV6k-9BAg_

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 security-grade-change-watch-a02b6b73
```

Example prompt: Keep an eye on example.com's security grade and let me know whenever it changes — I want to see exactly which fields shifted and what the before and after values were.

## When to prefer this

Choose this endpoint when you need to detect changes in a website's overall security grade over time rather than just fetching the current grade. It is ideal for scheduled monitoring workflows where you only want to act when something actually changes, and you need field-level diffs (before/after values) to understand what specifically shifted. It is more efficient than calling a point-in-time security check repeatedly and manually diffing results yourself.

## Known failure modes

- Domain not resolvable or unreachable — check may return an error or empty grade
- First-time call for a domain has no previous result to compare against, so changed will be false or baseline
- Cached result older than 90 days is purged, causing a fresh baseline rather than a diff
- Malformed or missing domain input parameter returns a validation error
- Payment failure (x402) prevents the check from running

## How this service works

Change watch for security grade: runs the check and compares it with the result from your previous call for the same domain (kept 90 days), returning the current answer, changed true/false, exactly which fields changed with before/after values, and when it was last seen. Call it on a schedule to be told when security grade a-f for a website in one number changes. $0.01 per check.

## Output

Returns the current security grade (A–F expressed as a single score), a boolean indicating whether anything changed since the last call for this domain, a detailed list of fields that changed with their before and after values, and the timestamp of when the previous result was last seen. Previous results are retained for 90 days.

## 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/security-grade-change-watch-a02b6b73/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from intel.rallylive.ca](https://www.zero.xyz/host/intel.rallylive.ca/llms.txt)