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Synapse Whale Tracking
x402
Synapse Whale Tracking is a paid API for AI agents from anibalb.duckdns.org, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-31).
Returns whale wallet activity for a token, including large buy/sell counts, net USD positions, and recent large on-chain transfers.
Price / call$0.01
Success—
StatusUnknown
How this service works
Public data and utility APIs paid per call in USDC on Base (x402). No accounts, no API keys. 174 routes: crypto/equity data, onchain reads, DNS/email/security intel, geo/weather, x402 payment diagnostics, dev utilities and more.
Output
Returns a JSON object containing the tracked token address, an array of whale wallets each with buy count, sell count, net USD position, and wallet address, plus a list of recent large transfers with sender, receiver, block number, and USD value.
Example use cases
Spot whale accumulation before a pump
“Check whale activity for the token at 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 — I want to know which wallets are net buying the most in USD and if there have been any massive transfers recently.”
Monitor smart money exits during volatility
“I need to see if any whales are heavily selling a token I'm holding — pull the whale tracking data and show me the top sellers by net USD and any large outbound transfers.”
Research token before investing
“Before I buy into this project, can you look up the whale wallet behavior for that token and tell me if big holders are accumulating or distributing right now?”
Technical details
Endpoint
GEThttps://anibalb.duckdns.org/x402/whale-tracking?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need rapid, pay-per-call on-chain whale intelligence without setting up an account or API key. Ideal for agents that need ad-hoc whale activity snapshots for specific tokens on Base, especially when integrating with x402 micropayment flows. Prefer over subscription analytics platforms when cost per call matters more than historical depth.
Side effects
- Token address not found or unsupported — empty or null whale array returned
- Payment not included or insufficient — HTTP 402 response requiring USDC payment on Base
- Network timeout if Base RPC is congested — slow or failed response
- No whale activity detected for low-liquidity tokens — empty arrays returned
- Invalid query parameters — 400 bad request
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"token": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"whales": [
{
"buys": 3,
"sells": 1,
"wallet": "0x...",
"net_usd": 50000
}
],
"recent_large_transfers": [
{
"to": "0x...",
"from": "0x...",
"block": 123456,
"value_usd": 12000
}
]
}
}Tags
x402
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