# Basescan Wallet Balance Checker

> Basescan Wallet Balance Checker is a paid API for AI agents from origin-mcp.fly.dev, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).

Returns ETH and ERC-20 token balances for a given wallet address on the Base network

## Facts

- Endpoint: GET https://origin-mcp.fly.dev/mcp/tools/basescan_wallet_balance
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/origin-mcp-fly-dev-0179f38e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_SL4fqeh6B4T1EtM7LvZ5S

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 origin-mcp-fly-dev-0179f38e
```

Example prompt: What's the current ETH and token balance for wallet address 0x742d35Cc6634C0532925a3b844Bc454e4438f44e on Base?

## When to prefer this

Use this endpoint when you need a complete snapshot of both ETH and ERC-20 token holdings for a specific wallet on the Base network. Prefer this over general blockchain RPCs when you need human-readable token data with symbols and amounts in one call.

## Known failure modes

- Invalid or malformed wallet address returns an error
- Address with no activity may return zero balances
- Rate limiting or upstream Basescan API unavailability
- Network-specific errors if querying non-Base addresses
- Payment failure due to insufficient USDC for the $0.001 fee

## How this service works

Get ETH + token balances for a wallet

## Output

Returns a list of ETH balance and all ERC-20 token balances held by the specified wallet address, including token symbols, contract addresses, and amounts.

## Example request

```json
{
 "tokens": [],
 "address": "0x1234567890123456789012345678901234567890"
}
```

## Request schema (JSON Schema)

```json
{
 "properties": {
  "input": {
   "required": [
    "method"
   ],
   "properties": {
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/origin-mcp-fly-dev-0179f38e/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from origin-mcp.fly.dev](https://www.zero.xyz/host/origin-mcp.fly.dev/llms.txt)