# x402 Trading Intelligence - Whale Watch

> x402 Trading Intelligence - Whale Watch is a paid API for AI agents from x402trading.duckdns.org, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-20).

Detects large-wallet (whale) activity and aggregates multi-source trading signals across 13,000+ tokens to surface actionable trading opportunities

## Facts

- Endpoint: POST https://x402trading.duckdns.org/api/whale-watch?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-20
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-trading-intelligence-whale-watch-564f5300
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_OvZJPD-pFt_h8DdIBqY8A

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-trading-intelligence-whale-watch-564f5300 -d '<json body>'
```

Example prompt: Are there any whale moves or strong trading signals on Ethereum right now? Pull in the Fear & Greed index and technical indicators and tell me if it looks like a buy or sell opportunity.

## When to prefer this

Choose this endpoint when you need a composite, multi-source trading signal that combines on-chain whale detection with market sentiment (Fear & Greed) and technical indicators in a single call. Prefer this over single-source price APIs when you want actionable intelligence rather than raw price data, and over general blockchain explorers when you specifically want large-wallet behavioral signals aggregated with market context.

## Known failure modes

- Token not found across supported data sources — returns empty or 404-equivalent signal
- Upstream data source (CoinGecko, Binance) timeout causes partial or degraded signal aggregation
- Payment not fulfilled — x402 payment required before response is returned
- Rate limiting if called too frequently without valid payment header
- Low-liquidity token with insufficient whale activity returns null whale data

## How this service works

Multi-source trading intelligence. Aggregates CoinGecko, Binance, Fear&Greed Index, and technical indicators to produce weighted signals, whale detection, and trading opportunities across 13,000+ tokens.

## Output

Returns detected whale transactions (large wallet buy/sell events), aggregated weighted trading signals from CoinGecko price data, Binance order flow, Fear & Greed Index, and technical indicators, along with an overall directional signal (bullish/bearish/neutral) and flagged trading opportunities for the queried token(s).

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-trading-intelligence-whale-watch-564f5300/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402trading.duckdns.org](https://www.zero.xyz/host/x402trading.duckdns.org/llms.txt)