# Base ETH Balance Lookup (Trading Research)

> Base ETH Balance Lookup (Trading Research) is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-01).

Returns the native ETH balance of any wallet address on the Base network using live Coinbase Exchange or Base RPC data, optimized for trading research workflows.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/crypto-base-eth-balance-trading-research?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-01
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/base-eth-balance-lookup-trading-research-fa8a63e7
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_mgflJkRi_PEJMrUxrIecr

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-eth-balance-lookup-trading-research-fa8a63e7 -d '<json body>'
```

Example prompt: What's the current native ETH balance on Base for the wallet address 0xAbCd1234...? I need it for trading research.

## When to prefer this

Choose this endpoint when you need a real-time, live native ETH balance on the Base network specifically — particularly for trading research contexts where data freshness from Coinbase Exchange or Base RPC matters. Prefer it over generic block explorers when you need a pay-per-call, programmatic API response without scraping or rate-limit concerns.

## Known failure modes

- Invalid or malformed Ethereum address returns an error
- Address with zero balance returns 0 rather than an error
- RPC node downtime may cause timeout or stale data
- Rate limiting may apply under heavy usage
- Non-Base-network addresses may return incorrect or zero balance

## How this service works

Base ETH balance for Zero address: Address: Zero address. Read an address native ETH balance on Base. Focus: trading research. Uses live Coinbase Exchange or Base RPC data.

## Output

Returns the native ETH balance held by the specified wallet address on the Base network, sourced from live Coinbase Exchange or Base RPC data. The response is suitable for real-time trading research and on-chain analysis.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "address": {
   "type": "string",
   "default": "0x0000000000000000000000000000000000000000"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/base-eth-balance-lookup-trading-research-fa8a63e7/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from market.datapackvibe.com](https://www.zero.xyz/host/market.datapackvibe.com/llms.txt)