# lobre.lat Whale Tracker — Large USDC Transfers on Base

> lobre.lat Whale Tracker — Large USDC Transfers on Base is a paid API for AI agents from lobre.lat, paid per call via x402, $0.08/call, status down (last checked 2026-09-15).

Returns recent large USDC transfers on the Base blockchain, filterable by minimum USD threshold to surface whale-level on-chain activity.

## Facts

- Endpoint: GET https://lobre.lat/api/v1/trading/engine/whale-tracker
- Price: $0.08/call
- Payment: x402
- Status: down
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/lobre-lat-whale-tracker-large-usdc-transfers-on-base-5f73eb80
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_2VuvUBX2Pv7bMSiJepEDE

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 lobre-lat-whale-tracker-large-usdc-transfers-on-base-5f73eb80
```

Example prompt: Show me recent whale USDC transfers on Base — I want to see anything above $1,000,000 so I can spot large stablecoin movements happening right now.

## When to prefer this

Use this endpoint when you need real-time on-chain data about large USDC transfers specifically on the Base network, particularly for whale monitoring, market intelligence, or DeFi flow analysis. Prefer this over CEX-based endpoints when you want trustless, on-chain transaction data rather than exchange order book data.

## Known failure modes

- No transfers found above the specified threshold in the recent window — returns empty list
- Invalid threshold value (non-numeric) — returns validation error
- Base chain RPC unavailability causing data fetch failure
- Rate limit or payment verification failure returning 402/429

## How this service works

Recent large USDC transfers on Base. On-chain data.

## Output

A list of recent large USDC transfers on the Base blockchain that exceed the specified threshold, including transaction details such as amounts, addresses, and timestamps, drawn from live on-chain data.

## 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"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "threshold": {
       "type": "number",
       "description": "Min USDC transfer USD. Default: 500000"
      }
     }
    }
   },
   "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/lobre-lat-whale-tracker-large-usdc-transfers-on-base-5f73eb80/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from lobre.lat](https://www.zero.xyz/host/lobre.lat/llms.txt)