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4SEC Liquidation Alert Subscription
x402
4SEC Liquidation Alert Subscription is a paid API for AI agents from api.foursec.xyz, paid per call via x402, $0.06/call, status down (last checked 2026-09-15).
Registers a webhook-based liquidation alert for a crypto trading symbol, triggering a notification when a configurable USD threshold is crossed on DEX markets.
Price / call$0.06
Success—
StatusDown
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 alert registration, including a unique alert ID, status ('active'), the symbol being monitored, the condition, the expiry datetime, the registered webhook URL, and the configured USD threshold.
Example use cases
DeFi trading bot liquidation guard
“Register a liquidation alert for WBTC on 4SEC — send a POST to https://tradingbot.io/hooks/liq whenever a liquidation event hits above $500,000, and keep it active for the next 48 hours.”
Portfolio risk notification
“I want to be alerted if there's a big liquidation on SOL exceeding $250,000 — ping my webhook at https://alerts.myapp.com/sol whenever that happens, and set the alert to expire in 12 hours.”
Short-term event monitoring during volatile market
“Set up a 6-hour liquidation monitor for PEPE with a $10,000 threshold and send hits to https://dashboard.cryptodesk.io/webhook — I need to watch for large liquidations while the market is pumping.”
Technical details
Endpoint
GEThttps://api.foursec.xyz/liquidation/alertWhen to prefer
Choose this endpoint when you need event-driven, webhook-based notifications for DEX liquidation events above a configurable USD threshold, without polling. Ideal for trading bots, risk management systems, or dashboards that need real-time push alerts. Prefer over polling-based market data endpoints when latency matters and you want serverless trigger-based architecture. Best when you need a time-bounded alert that auto-expires.
Side effects
- Missing required 'symbol' parameter returns a 400 validation error
- Missing or invalid 'webhook_url' returns a 400 error
- Payment failure via x402 protocol returns 402 Payment Required
- Invalid or unreachable webhook URL may cause silent notification failures after registration
- Alert may expire before the event occurs if 'expires_in_hours' is too short
- Symbol not supported by 4SEC multi-DEX data may return a 404 or empty response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| symbolrequired | string | Trading symbol |
| condition | string | |
| webhook_urlrequired | string | |
| threshold_usd | number | USD threshold for alert |
| expires_in_hours | integer |
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| id | string | |
| status | string | |
| symbol | string | |
| condition | string | |
| expires_at | string | |
| webhook_url | string | |
| threshold_usd | number |
Tags
x402
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