# WhaleAlert — Large On-Chain Transaction Monitor

> WhaleAlert — Large On-Chain Transaction Monitor is a paid API for AI agents from api.aidress.ai, paid per call via x402, $0.05/call, status unknown (last checked 2026-10-28).

Monitors and returns large on-chain transactions (whale movements) on Base, Ethereum, and Robinhood Chain with AI pattern analysis and named wallet labels

## Facts

- Endpoint: GET https://api.aidress.ai/pay/agent_whale_lonestaroracle_xyz?utm_source=zero.xyz
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-28
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/whalealert-large-on-chain-transaction-monitor-64234ee1
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_cUL3K8MqGCJ68BZochXjW

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 whalealert-large-on-chain-transaction-monitor-64234ee1
```

Example prompt: Show me all large on-chain transactions above $500,000 on Ethereum from the past 6 hours — both token transfers and native ETH moves — with AI pattern analysis on what the whales might be doing.

## When to prefer this

Choose this endpoint when you need real-time visibility into large on-chain transactions specifically on Base, Ethereum, or Robinhood Chain, especially when named wallet labels and AI pattern analysis on smart-money behavior are important. It is particularly useful for DeFi traders, portfolio monitors, and market intelligence agents that need to detect unusual whale activity quickly. Prefer this over generic blockchain explorers when you want structured, filterable results with AI commentary rather than raw transaction data.

## Known failure modes

- Invalid chain parameter (not base/eth/robinhood) returns error
- Hours out of range (>24) rejected
- Min USD below supported threshold may return too many results or error
- Network RPC issues may cause stale or empty data
- Payment of 0.05 USDC required per call — unpaid requests return 402
- Rate limiting if called too frequently

## How this service works

Large on-chain transaction monitor — whale movements on Base, Ethereum, and Robinhood Chain with AI pattern analysis

## Output

A list of large on-chain transactions matching the specified filters, including sender/receiver wallet addresses with named labels where available, transaction USD value, token or native asset type, blockchain explorer links, and an AI-generated pattern analysis summarizing potential smart-money behavior or notable trends in the whale activity.

## Request schema (JSON Schema)

```json
{
 "name": "WhaleAlert — Large Transaction Monitor",
 "tags": [
  "whale",
  "on-chain",
  "transactions",
  "base",
  "ethereum",
  "robinhood",
  "smart-money"
 ],
 "type": "object",
 "version": "1.0.0",
 "category": "data",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "type": {
       "type": "string",
       "title": "Type",
       "default": "all",
       "description": "token | native | all"
      },
      "chain": {
       "type": "string",
       "title": "Chain",
       "default": "base",
       "description": "base, eth, or robinhood"
      },
      "hours": {
       "type": "integer",
       "title": "Hours",
       "default": 1,
       "description": "Lookback hours (1-24)"
      },
      "limit": {
       "type": "integer",
       "title": "Limit",
       "default": 20,
       "description": "Max results"
      },
      "min_usd": {
       "type": "number",
       "title": "Min Usd",
       "default": 100000,
       "description": "Minimum USD value"
      }
     }
    }
   }
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {}
   }
  }
 },
 "description": "Real-time large on-chain transaction monitoring for Base, Ethereum, and Robinhood Chain. Tracks token transfers and native ETH moves above your USD threshold. Named wallet labels, explorer links, and AI pattern analysis."
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/whalealert-large-on-chain-transaction-monitor-64234ee1/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.aidress.ai](https://www.zero.xyz/host/api.aidress.ai/llms.txt)