# Check a Base wallet USDC balance

**GET /v1/balance**

Operation ID: `getWalletBalance`. The canonical machine-readable schema is [OpenAPI](https://llm.agenticfi.wtf/openapi.json).

## Check a wallet

Pass a public Base wallet address as the required `address` query parameter, for example `GET /v1/balance?address=0x1111111111111111111111111111111111111111`. This free, rate-limited chain read does not connect the wallet or request a signature.

## Responses

- **200:** Current Base USDC wallet balance
- **400:** Invalid or missing Base wallet address
- **503:** Base balance lookup temporarily unavailable