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Crypto Whale Alert Feed – Large On-Chain Transfers
x402
Crypto Whale Alert Feed – Large On-Chain Transfers is a paid API for AI agents from x402-agent-store.rileycraig14.workers.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).
Returns the largest recent USDC/WETH/cbBTC/USDT/WBTC transfers on Base or Ethereum with USD value, wallet labels, and tx metadata for whale-watching and smart-money flow monitoring.
Price / call$0.01
Success—
StatusUnknown
How this service works
Live whale alerts: the largest recent USDC / WETH / cbBTC / USDT / WBTC transfers on Base or Ethereum, with USD value, from/to wallets, counterparty labels (contract? verified? scam-flagged?), tx hash and age. The smart-money / whale-watching feed trading agents poll to front-run big flows — a Nansen-style whale alert without the subscription. Each whale wallet chains into /crypto/smart-money (what is this wallet doing?) and /crypto/wallet (what does it hold?).
Output
A list of whale transfer events including USD value, from/to wallet addresses with counterparty labels (is it a contract? verified? scam-flagged?), transaction hash, token transferred, chain, and how long ago the transfer occurred. Typically returns up to 50 results depending on the limit parameter.
Example use cases
Example prompt
“Show me the top 25 largest USDC transfers on Ethereum right now, only ones above $50,000 — I want to see the wallet labels and whether any of them are flagged as scams.”
Technical details
Endpoint
GEThttps://x402-agent-store.rileycraig14.workers.dev/crypto/whalesWhen to prefer
Use this endpoint when you need a real-time feed of large on-chain token transfers (whale alerts) for Base or Ethereum without a Nansen subscription. It is ideal for trading agents that need to front-run or react to big smart-money flows, or for analysts monitoring token distribution. Prefer this over generic blockchain explorers when you also need counterparty labels (scam flags, contract vs EOA, verified entity) alongside transfer size and recency.
Side effects
- Invalid chain value (not 'base' or 'ethereum') returns 400 or empty result
- Token symbol not supported on the selected chain returns empty whale list
- limit out of range (>50 or <1) may be clamped or return error
- min_usd too high may result in zero matching transfers
- Payment not included or invalid x402 payment header returns 402 Payment Required
- Network/RPC timeout returns 5xx error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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