# Base Intel WalletWatch — Whale Wallet Tracker

> Base Intel WalletWatch — Whale Wallet Tracker is a paid API for AI agents from base-intel.deleonanalytics.com, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-14).

Returns a list of large ('whale') wallets actively trading a specified token on Base mainnet within a configurable recent block window.

## Facts

- Endpoint: GET https://base-intel.deleonanalytics.com/wallet/whales
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/base-intel-walletwatch-whale-wallet-tracker-74a34eeb
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_oMm9eXFpig9eWmHgUh8xQ

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability base-intel-walletwatch-whale-wallet-tracker-74a34eeb
```

Example prompt: Who are the top 10 whale wallets trading the token at 0x4ed4e862860bed51a9570b96d89af5e1b0efefed on Base mainnet over the last 500 blocks?

## When to prefer this

Use this endpoint when you need real-time on-chain intelligence about large wallet (whale) activity for a specific token on Base mainnet. Prefer this over generic blockchain explorers when you want pre-filtered, ranked whale addresses rather than raw transaction data. Best for DeFi traders, analysts, or agents monitoring accumulation/distribution signals.

## Known failure modes

- Missing required 'token' parameter returns a 400 validation error
- Invalid or unrecognized token contract address returns empty results or 404
- Payment not fulfilled triggers a 402 Payment Required response requiring USDC payment via x402 protocol
- Very large 'blocks' window may increase latency or hit server-side limits
- 'limit' set to an excessively high number may be capped server-side
- Token with no recent whale activity returns an empty list

## How this service works

4 production x402 APIs on Base Mainnet: AlphaStream, TokenPulse, WalletWatch, RugRadar. Pay per request in USDC or subscribe via Stripe.

## Output

Returns a ranked list of whale wallet addresses that have been actively buying or selling the specified token on Base mainnet, covering recent on-chain activity within the requested block range, with configurable result count.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "token"
 ],
 "properties": {
  "limit": {
   "type": "integer"
  },
  "token": {
   "type": "string"
  },
  "blocks": {
   "type": "integer"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/base-intel-walletwatch-whale-wallet-tracker-74a34eeb/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from base-intel.deleonanalytics.com](https://www.zero.xyz/host/base-intel.deleonanalytics.com/llms.txt)