# base-live-balance

> base-live-balance is a paid API for AI agents from x402.agentindex.world, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-10).

Fetches native ETH balance plus up to 20 ERC20 token balances for a single wallet on Base mainnet in one Multicall3 round trip.

## Facts

- Endpoint: GET https://x402.agentindex.world/base/live-balance?utm_source=zero.xyz
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-10
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/base-live-balance-d6f4da96
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_yBHWg2sKpGtuDQPHvcOWz

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 base-live-balance-d6f4da96
```

Example prompt: What's the current ETH balance and USDC, DAI, and WETH token balances for wallet 0xAbC123...def456 on Base mainnet?

## When to prefer this

Use this endpoint when you need to check both native ETH and multiple ERC20 token balances for a single wallet on Base mainnet in one efficient call. Ideal when you need a consistent, atomic snapshot of wallet holdings without making multiple separate RPC calls. Prefer this over generic wallet checkers when specifically targeting Base mainnet and needing multi-token aggregation in a single round trip.

## Known failure modes

- Invalid wallet address format returns an error
- ERC20 token contract address not valid on Base mainnet returns zero or error for that token
- More than 20 tokens specified exceeds the maxItems limit
- Wallet with no holdings returns zero balances
- Network congestion may cause timeout on Multicall3 call
- Payment failure (x402) prevents the call from being made

## How this service works

Native ETH balance plus up to 20 ERC20 token balances for one wallet on Base mainnet, in a single Multicall3 round trip regardless of token count.

## Output

Returns the native ETH balance and the balances of up to 20 specified ERC20 tokens for the given wallet address on Base mainnet, all retrieved in a single Multicall3 round trip for efficiency and consistency.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "tokens": {
   "type": "array",
   "items": {
    "type": "string"
   },
   "title": "Tokens",
   "maxItems": 20
  },
  "wallet": {
   "type": "string",
   "title": "Wallet"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/base-live-balance-d6f4da96/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.agentindex.world](https://www.zero.xyz/host/x402.agentindex.world/llms.txt)