---
title: "Base Wallet Balances: ETH and Major Token Holdings"
method: GET
path: "/v1/base-wallet-balances"
tags: ["Base"]
---

# Base Wallet Balances: ETH and Major Token Holdings

`GET /v1/base-wallet-balances`

## Request

- Base URL: `https://api.ambolt.dev`
- URL: `https://api.ambolt.dev/v1/base-wallet-balances`
- Auth: none required

ETH balance and balances of major tokens (USDC, WETH, cbBTC, DAI, USDbC, cbETH, AERO) for any address on Base, plus any extra token contracts you list. Read live from the chain. Shows only non-zero balances; there is no price data and no recommendation.

## Query parameters

- `address` string, required: Wallet address on Base.
- `extraTokens` string[]: Additional ERC-20 contract addresses to check (up to 20).
- `free` '1'

## Response `200`

Result (JSON). Every result names its source and the time it was read.

- object

## Other responses

- `400`: Invalid input; not charged.
- `402`: Payment required: 0.005 USD in USDC (x402 v2).

---

[API](https://skmtc.dev/ambolt/apis/ambolt-data-tools.md) · [All operations](https://skmtc.dev/ambolt/apis/ambolt-data-tools/llms.txt) · [OpenAPI document](https://skmtc.dev/ambolt/apis/ambolt-data-tools/revisions/8397885dd82f?raw)