# compression-check-watch

> compression-check-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 HTTP compression status for a URL and returns whether it has changed since the last check, with before/after field diffs retained for 90 days.

## Facts

- Endpoint: GET https://intel.rallylive.ca/watch/site/compression
- 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/compression-check-watch-aa985756
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_8xjIfSqCG7xSSJP2u_P9I

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 compression-check-watch-aa985756
```

Example prompt: Keep an eye on the HTTP compression settings for https://example.com and let me know if anything changes compared to the last time you checked.

## When to prefer this

Choose this endpoint when you need to detect changes in HTTP compression configuration over time rather than just a one-time check. It is ideal for scheduled agents that need to be alerted when a site's compression settings are added, removed, or altered. Prefer it over a plain compression check when diffing before/after values matters and you want persistent state across calls without managing storage yourself.

## Known failure modes

- URL unreachable or returns non-200 response — check may fail or return an error state
- No previous result stored (first call) — 'changed' will be false or undefined, no diff available
- Results older than 90 days are purged — previous baseline lost, diff unavailable
- Payment failure (x402) — call rejected before executing
- Invalid or malformed URL input — schema validation error

## How this service works

Change watch for compression check: runs the check and compares it with the result from your previous call for the same url (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 http compression check changes. $0.01 per check.

## Output

Returns the current HTTP compression check result for the given URL, a boolean 'changed' field indicating whether any values differ from the previous call, a detailed diff of exactly which fields changed with their before and after values, and the timestamp of when the 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/compression-check-watch-aa985756/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)