# IP Listed on S5H Blacklist Change Watch

> IP Listed on S5H Blacklist Change Watch is a paid API for AI agents from ip.intel.rallylive.ca, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-13).

Monitors whether an IP address is listed on the S5H DNSBL and alerts when the listing status changes between calls.

## Facts

- Endpoint: GET https://ip.intel.rallylive.ca/watch/ip/blacklist/s5h?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/ip-listed-on-s5h-blacklist-change-watch-c22b9a3a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Q_prx0Hr5v79bck1zDINx

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 ip-listed-on-s5h-blacklist-change-watch-c22b9a3a
```

Example prompt: Keep watching 198.51.100.42 on the S5H blacklist and let me know as soon as its listing status changes — tell me what changed and when it was last seen.

## When to prefer this

Choose this endpoint when you need change-detection semantics for S5H blacklist monitoring rather than a one-shot lookup. It is ideal for scheduled polling workflows where you want to be notified only when the listing status actually changes, avoiding alert fatigue from repeated identical results. Prefer it over a plain S5H lookup when you need diff output (before/after field values) and a last-seen timestamp for audit or alerting purposes.

## Known failure modes

- IP address not provided or malformed — query fails or returns validation error
- No previous call stored for this IP (first call) — 'changed' will be indeterminate or false with no diff
- DNSBL lookup timeout or DNS resolution failure — may return an error or stale result
- Result history expired after 90 days — baseline lost, comparison unavailable
- Payment not processed — endpoint returns 402 and check is not performed

## How this service works

Change watch for ip listed on s5h: runs the check, compares it with the result from your previous call for the same ip (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 S5H blacklist status for the IP, a boolean 'changed' flag indicating whether the result differs from the previous call (retained for 90 days), a diff of any changed fields showing before and after values, and a 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/ip-listed-on-s5h-blacklist-change-watch-c22b9a3a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from ip.intel.rallylive.ca](https://www.zero.xyz/host/ip.intel.rallylive.ca/llms.txt)