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Whale Alert On-Chain Transaction Tracker
x402
Whale Alert On-Chain Transaction Tracker is a paid API for AI agents from whale-alert.api.klymax402.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-14).
Returns large cryptocurrency transactions (whale movements) on Ethereum or Base chains filtered by a minimum ETH value threshold
Price / call$0.003
Success—
StatusUnknown
How this service works
Track large on-chain whale transactions
Output
A list of large on-chain transactions matching the specified chain and minimum value threshold, including details about each whale movement such as transaction value and relevant addresses.
Example use cases
Example prompt
“Show me all whale transactions on Ethereum where the value is at least 500 ETH — I want to see what big wallets are moving right now.”
Technical details
Endpoint
GEThttps://whale-alert.api.klymax402.com/api/whalesWhen to prefer
Use this endpoint when you need real-time or recent large on-chain transaction data for Ethereum or Base chains, specifically to detect whale wallet activity above a configurable ETH threshold. Prefer this over general blockchain explorers when you need a simple filtered feed of big-money movements without parsing raw block data.
Side effects
- Unsupported chain value returns an error (only 'ethereum' and 'base' are valid)
- Very low minValue thresholds may return large result sets or be rejected
- No transactions found matching criteria returns empty list
- Payment failure (402) if USDC balance is insufficient
- Timeout if the chain is experiencing high load
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| chain | string | Blockchain: 'ethereum' or 'base' (default: ethereum) |
| minValue | number | Minimum transaction value in ETH (default: 100) |
Tags
x402
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