# 4SEC Liquidation Alert Extend

> 4SEC Liquidation Alert Extend is a paid API for AI agents from api.foursec.xyz, paid per call via x402, $0.01/call, status down (last checked 2026-09-15).

Extends the expiration time of an existing crypto liquidation alert by adding up to 168 hours

## Facts

- Endpoint: GET https://api.foursec.xyz/liquidation/alert/%7Bid%7D/extend
- Price: $0.01/call
- Payment: x402
- Status: down
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/4sec-liquidation-alert-extend-0566758a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_QirVMW8C29U7FsGl6eVD9

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 4sec-liquidation-alert-extend-0566758a
```

Example prompt: Extend my 4SEC liquidation alert (ID: abc123) by 48 hours so it stays active longer.

## When to prefer this

Use this endpoint when you have an existing 4SEC liquidation alert that is approaching expiration and you want to prolong its active monitoring window without creating a new alert. Prefer this over creating a fresh alert when you want to preserve the existing alert ID and configuration.

## Known failure modes

- Invalid or non-existent alert ID returns an error status
- Requested hours exceed the 168-hour maximum cap
- Alert already expired and cannot be extended
- Payment failure via x402/USDC causes request rejection
- Malformed add_hours value (e.g. non-integer or negative) returns validation error

## How this service works

Real-time multi-DEX aggregated crypto market data. Pay per request with USDC on Base via x402 protocol.

## Output

Returns a JSON object confirming the extension with the alert ID, the number of hours added, the new expiration datetime (ISO 8601), and a status string indicating success or failure.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "add_hours": {
   "type": "integer",
   "description": "Hours to add (max 168)"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "status": {
   "type": "string"
  },
  "alert_id": {
   "type": "string"
  },
  "added_hours": {
   "type": "integer"
  },
  "new_expires_at": {
   "type": "string",
   "format": "date-time"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/4sec-liquidation-alert-extend-0566758a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.foursec.xyz](https://www.zero.xyz/host/api.foursec.xyz/llms.txt)