# BaseBuilder Crypto Smart Money Transfers

> BaseBuilder Crypto Smart Money Transfers is a paid API for AI agents from bb-crypto.vercel.app, paid per call via x402, $0.107787/call, status unknown (last checked 2026-09-15).

Retrieves smart money transfer activity on-chain, tracking movements of whale and institutional crypto wallets

## Facts

- Endpoint: POST https://bb-crypto.vercel.app/api/smart-money/transfers
- Price: $0.107787/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/basebuilder-crypto-smart-money-transfers-a492b415
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_4drvktbSibNLKA9dB_5Cp

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 basebuilder-crypto-smart-money-transfers-a492b415 -d '<json body>'
```

Example prompt: Show me the recent smart money transfers for USDC on Base — I want to see what the big wallets have been moving in the last 24 hours.

## When to prefer this

Use this endpoint when you need to track on-chain token transfers specifically attributed to smart money or whale wallets, rather than general transaction history. Best suited for market intelligence, DeFi research, or building signals around institutional crypto movement on supported chains.

## Known failure modes

- Invalid or missing wallet/token address returns 400 error
- Unsupported chain or token returns empty result set
- Payment not received results in 402 Payment Required
- Rate limiting or quota exceeded returns 429
- Malformed POST body returns 400 validation error
- Internal server error if upstream blockchain data provider is unavailable

## How this service works

BaseBuilder Crypto API hub - 26 paid endpoints

## Output

Returns a list of on-chain transfer records attributed to smart money or whale wallets, including sender/receiver addresses, token details, amounts, transaction hashes, and timestamps for each transfer event.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/basebuilder-crypto-smart-money-transfers-a492b415/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from bb-crypto.vercel.app](https://www.zero.xyz/host/bb-crypto.vercel.app/llms.txt)