# EVM On-Chain Balance Lookup (Hub Europe, Germany)

> EVM On-Chain Balance Lookup (Hub Europe, Germany) is a paid API for AI agents from gentlepenguin.ccwu.cc:8443, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-27).

Looks up the ETH balance and nonce for any EVM address on Base or Ethereum, paid per-call via USDC on Base using x402.

## Facts

- Endpoint: GET https://gentlepenguin.ccwu.cc:8443/v1/chain/balance?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-27
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/evm-on-chain-balance-lookup-hub-europe-germany-52ffea00
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ezxVCcVAgBkVxVCy3sQ1K

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 evm-on-chain-balance-lookup-hub-europe-germany-52ffea00
```

Example prompt: What's the current ETH balance and nonce for wallet 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 on Base?

## When to prefer this

Use this endpoint when you need a quick, no-account, pay-per-call ETH balance or nonce check for any EVM address on Base or Ethereum without setting up an API key or RPC subscription. It is ideal for agents that only need occasional on-chain lookups and want to pay micropayments via USDC on Base using the x402 protocol, queried from European infrastructure.

## Known failure modes

- Invalid or malformed 0x address returns an error response
- Unsupported chain value (not 'base' or 'ethereum') causes a validation error
- Payment failure via x402 prevents the call from completing
- Network or RPC node errors on the backend may return a 5xx response
- Address with no transactions may return nonce of 0 and zero balance, which is valid but may be unexpected

## How this service works

Pay-per-call website uptime/latency/TLS checks and fetch-to-Markdown, measured from Hub Europe (Germany). USDC on Base via x402. No account or API key.

## Output

Returns a JSON object with the wallet address, chain name, ETH balance as a decimal string, ETH balance in wei, the account nonce, and the block number at which the data was read.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "chain",
      "address"
     ],
     "properties": {
      "chain": {
       "type": "string",
       "example": "base",
       "description": "base or ethereum"
      },
      "address": {
       "type": "string",
       "example": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045",
       "description": "0x EVM address"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "block": 36000000,
  "chain": "base",
  "nonce": 5,
  "address": "0x...",
  "balance_eth": "0.0123",
  "balance_wei": "12300000000000000"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/evm-on-chain-balance-lookup-hub-europe-germany-52ffea00/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from gentlepenguin.ccwu.cc:8443](https://www.zero.xyz/host/gentlepenguin.ccwu.cc%3A8443/llms.txt)