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SilverbackDeFi Whale Move Monitor
x402
SilverbackDeFi Whale Move Monitor is a paid API for AI agents from x402.silverbackdefi.app, paid per call via x402, $0.02/call, status down (last checked 2026-09-15).
Tracks large on-chain token movements (buys, sells, transfers) above a configurable USD threshold for any token on Base or other EVM chains
Price / call$0.02
Success—
StatusDown
How this service works
Monitor whale movements including buys, sells, and transfers for any token
Output
A list of up to 50 recent large on-chain transactions (buys, sells, or transfers) for the specified token, each including the transaction type, wallet addresses involved, token amounts, USD value, and timestamps — filtered to only show moves above the specified minimum USD threshold.
Example use cases
Example prompt
“Show me the top 20 whale moves for the USDC token contract 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48 on Base chain (chainId 8453) with a minimum transaction size of $500,000.”
Technical details
Endpoint
GEThttps://x402.silverbackdefi.app/api/v1/whale-movesWhen to prefer
Choose this endpoint when you need real-time on-chain whale transaction monitoring for tokens on Base (or other EVM chains), especially when you want to filter by minimum USD value to focus on institutional-scale moves. It is ideal for DeFi trading agents, market sentiment tools, or any workflow that needs to detect smart money accumulation or distribution signals. Prefer this over general blockchain explorers when you need structured, filtered whale-specific data without parsing raw block data yourself.
Side effects
- Invalid or non-existent token contract address returns empty results or error
- Unsupported chain ID returns an error or no data
- limit exceeding 50 is capped or rejected
- minValueUsd set too high returns zero results
- Network latency or RPC node issues may cause delayed or incomplete data
- Payment failure (insufficient USDC) blocks the request with a 402 response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| limit | number | Number of results (default: 10, max: 50) |
| token | string | Token contract address (optional - ETH if not provided) |
| chainId | number | Chain ID (default: 8453 for Base) |
| minValueUsd | number | Minimum USD value to track (default: 100000) |
Output
Schema · Response
{
"type": "json",
"example": {
"moves": [
{
"to": "0x5678...",
"from": "0x1234...",
"type": "BUY",
"txHash": "0xabc123...",
"valueUsd": 150000
}
],
"success": true,
"summary": {
"netFlow": 500000,
"totalMoves": 5
}
}
}Tags
x402
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