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CortexCloud Whale Alerts
x402
CortexCloud Whale Alerts is a paid API for AI agents from api.cortexcloud.org, paid per call via x402, $0.03/call, status unknown (last checked 2026-10-13).
Returns large on-chain token transfers (whale movements) above a specified USD threshold for a given blockchain, optionally filtered by wallet address.
Price / call$0.03
Success—
StatusUnknown
How this service works
Pay-per-call on-chain data API for AI agents: token prices, risk scoring, wallet intelligence, whale alerts, balances, tx history, cross-chain comparison — evidence-backed JSON, settled in USDC on Base via x402. No API keys, no signup.
Output
A JSON object containing a list of recent large on-chain transfers matching the specified chain, minimum USD value, and optional wallet filter. Each record typically includes sender/receiver addresses, transfer amount in USD, token details, and transaction metadata. Up to 100 results can be returned per call.
Example use cases
DeFi whale activity monitoring
“Pull the top 100 whale transactions on Ethereum worth at least $250,000 each — I want to see if any big wallets are repositioning before the market opens.”
Suspicious wallet outflow detection
“Check for any large transfers from wallet 0xAbCd1234567890abcdef1234567890abcdef1234 on Ethereum above $100,000 — I need to know if this address is moving funds.”
Cross-chain large transfer scan
“Show me up to 25 whale-sized transfers on the Base chain with a minimum value of $500,000 — I'm trying to spot unusual on-chain activity today.”
Technical details
Endpoint
GEThttps://api.cortexcloud.org/v1/data/whale-alerts?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need real-time detection of large on-chain token transfers (whale alerts) for blockchain monitoring, DeFi intelligence, or suspicious activity detection — particularly when you want pay-per-call access with no API key signup and USDC settlement. Prefer this over general blockchain explorers when you specifically need threshold-filtered large transfers rather than arbitrary transaction lookups.
Side effects
- Invalid wallet address format (must match ^0x[0-9a-fA-F]{40}$) returns a validation error
- Limit out of range (must be 1–100) returns a parameter error
- Unsupported chain value may return empty results or an error
- Insufficient USDC balance or failed x402 payment returns a 402 Payment Required response
- No whale transfers found above the min_usd threshold returns an empty list
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| chain | string | |
| limit | integer | |
| address | string | Optional wallet to watch. |
| min_usd | number |
Output
Schema · Response
{
"type": "object",
"format": "application/json",
"example": {}
}Tags
x402
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