# SperaxOS Whale Alerts API

> SperaxOS Whale Alerts API is a paid API for AI agents from chat.sperax.io, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-20).

Returns AI-powered DeFi whale alert data — large on-chain transactions and wallet movements — payable per-request via x402 USDC on Base

## Facts

- Endpoint: GET https://chat.sperax.io/api/x402/intel/whale-alerts?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-20
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/speraxos-whale-alerts-api-0c0e793b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_KtO1i22HUl9SxBKfPv29u

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 speraxos-whale-alerts-api-0c0e793b
```

Example prompt: Pull the latest DeFi whale alerts from SperaxOS right now — I want to see which wallets are making unusually large on-chain moves so I can gauge market sentiment.

## When to prefer this

Choose this endpoint when you need real-time or near-real-time intelligence on large on-chain wallet movements and whale transactions in DeFi markets, especially if you want to avoid API key management and pay micro-amounts per call in USDC. Prefer it over general blockchain explorers when you need AI-curated, signal-grade whale alerts rather than raw transaction data.

## Known failure modes

- 402 Payment Required if no valid x402 USDC payment is attached
- Stale or empty data if no whale activity meets threshold in recent window
- Malformed filter properties result in ignored params or 400 error
- Network timeout if Base payment settlement is delayed
- Rate limiting if many requests are sent in rapid succession without payment

## How this service works

AI-powered DeFi intelligence APIs payable via the x402 HTTP payment protocol. No API key required — pay per request with USDC on Base. Identity-only (SIWX) endpoints are free for wallets with an agentcash identity.

## Output

Returns a list of recent whale alert events including large on-chain transactions, the wallets involved, token amounts, chains, and AI-generated intelligence signals about notable DeFi movements. Each alert surfaces data points useful for trading decisions or market monitoring.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "properties": {
   "type": "string"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/speraxos-whale-alerts-api-0c0e793b/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from chat.sperax.io](https://www.zero.xyz/host/chat.sperax.io/llms.txt)