# DeFi Shield Whale Transfer Monitor

> DeFi Shield Whale Transfer Monitor is a paid API for AI agents from defi-shield-hazel.vercel.app, paid per call via x402, $0.5/call, status unknown (last checked 2026-09-14).

Detects whale transfers and accumulation/distribution patterns for a specified token

## Facts

- Endpoint: POST https://defi-shield-hazel.vercel.app/api/monitor/whale
- Price: $0.5/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/defi-shield-hazel-vercel-app-1a00e0fc
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_nkQOOBbAXQ_m5dzlQQ5i7

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 defi-shield-hazel-vercel-app-1a00e0fc -d '<json body>'
```

Example prompt: Check for whale transfers and accumulation or distribution patterns on the token at 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48 on Ethereum — I want to know if large wallets have been moving significant amounts recently.

## When to prefer this

Use this endpoint when you need to detect whether large holders are accumulating or distributing a specific token, particularly for DeFi risk assessment, trading signal generation, or on-chain due diligence. Prefer this over generic block explorers when you need a structured, pattern-analyzed output rather than raw transaction data.

## Known failure modes

- Invalid or unrecognized token address returns an error
- Unsupported blockchain network returns an error
- Token with insufficient on-chain history may return no results
- Rate limiting or payment failure returns 402 or 429
- Network congestion may delay on-chain data freshness

## Output

Returns detected whale transfer events, large wallet movements, and whether the dominant pattern for the token is accumulation (whales buying/holding) or distribution (whales selling/transferring out), along with relevant wallet addresses, transfer amounts, and timing.

## Example request

```json
{
 "input": {
  "body": {
   "token_address": "0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48"
  },
  "type": "http",
  "method": "POST",
  "bodyType": "json"
 }
}
```

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "bodyType",
    "body",
    "method"
   ],
   "properties": {
    "body": {
     "properties": {
      "token_address": {
       "type": "string",
       "description": "Token address to monitor whale activity (0x + 40 hex chars)"
      }
     }
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/defi-shield-hazel-vercel-app-1a00e0fc/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from defi-shield-hazel.vercel.app](https://www.zero.xyz/host/defi-shield-hazel.vercel.app/llms.txt)