# AsterPay Crypto Whale Alerts

> AsterPay Crypto Whale Alerts is a paid API for AI agents from x402.asterpay.io, paid per call via x402, $0.03/call, status unknown (last checked 2026-10-12).

Returns recent large cryptocurrency transactions (whale movements) including sender, receiver, token, amount, and transaction type

## Facts

- Endpoint: GET https://x402.asterpay.io/v1/crypto/whale-alerts?utm_source=zero.xyz
- Price: $0.03/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/asterpay-crypto-whale-alerts-afd867aa
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_UfPNpv6STZu7o1ilfIgDi

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 asterpay-crypto-whale-alerts-afd867aa
```

Example prompt: Show me the most recent large crypto transactions — specifically any big USDC or other token whale movements, including who sent them, who received them, and whether they were exchange deposits.

## When to prefer this

Choose this endpoint when you need real-time visibility into large on-chain cryptocurrency movements without building your own blockchain indexing infrastructure. It is ideal for trading bots, market intelligence dashboards, or DeFi risk monitors that need to react quickly to whale activity. Prefer this over general price feeds when the question is about who is moving funds rather than what price is doing.

## Known failure modes

- No alerts available if no large transactions occurred recently
- Rate limiting or payment failure if USDC payment not properly attached
- Empty alerts array if whale threshold not met in recent window
- Malformed or unavailable response if upstream blockchain data source is down

## How this service works

Get recent large cryptocurrency movements (whale alerts)

## Output

Returns a list of recent large cryptocurrency transactions, each containing the sender address, receiver address, transaction type (e.g. exchange_deposit), token symbol, amount, and ISO 8601 timestamp.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "headers": {
     "type": "object",
     "additionalProperties": {
      "type": "string"
     }
    },
    "queryParams": {
     "type": "object",
     "properties": {},
     "additionalProperties": false
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "alerts": [
   {
    "to": "0xdef...456",
    "from": "0xabc...123",
    "type": "exchange_deposit",
    "token": "USDC",
    "amount": 50000000,
    "timestamp": "2026-02-01T11:30:00Z"
   }
  ]
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/asterpay-crypto-whale-alerts-afd867aa/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.asterpay.io](https://www.zero.xyz/host/x402.asterpay.io/llms.txt)