# x402-gateway: whale_alerts

> x402-gateway: whale_alerts is a paid API for AI agents from x402.freeq.one, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-30).

Returns large on-chain transaction alerts (whale movements) for cryptocurrency markets via a paid x402 gateway

## Facts

- Endpoint: POST https://x402.freeq.one/market/bazaar/tools/whale_alerts?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-30
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-gateway-whale-alerts-346f5a8b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_wK0CVqMqCX5l6n9xAFW1W

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 x402-gateway-whale-alerts-346f5a8b -d '<json body>'
```

Example prompt: Can you pull the latest whale alerts from the bazaar market tool — I want to see which wallets are moving large amounts of crypto right now?

## When to prefer this

Choose this endpoint when you need real-time or near-real-time visibility into large on-chain crypto transactions for market surveillance, trading signals, or risk monitoring. It is particularly useful for agents operating in DeFi or crypto trading contexts that need whale movement data without building their own blockchain indexer.

## Known failure modes

- Missing or invalid 'tool' field in request body returns an error
- Payment not settled (402 response if x402 payment header is absent or rejected)
- Upstream whale alert data provider is unavailable, returning a 503 or empty result
- Rate limiting if too many calls are made in quick succession

## How this service works

x402-gateway tool: whale_alerts (market: bazaar)

## Output

A list of recent large on-chain crypto transactions (whale alerts), likely including details such as wallet addresses, token type, amount transferred, blockchain network, and timestamp of each significant movement.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "tool": {
   "type": "string",
   "description": "Tool name (see GET /tools for the catalog)"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-gateway-whale-alerts-346f5a8b/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.freeq.one](https://www.zero.xyz/host/x402.freeq.one/llms.txt)