# Mint Intel: Base Chain Native ETH Balance

> Mint Intel: Base Chain Native ETH Balance is a paid API for AI agents from mintintel.35-171-220-195.sslip.io, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-31).

Returns the native ETH balance of any Base network address in both wei and ETH, queried at the latest block via eth_getBalance.

## Facts

- Endpoint: GET https://mintintel.35-171-220-195.sslip.io/v1/base/balance/:address?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-31
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/mint-intel-base-chain-native-eth-balance-567da04f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_JB9C4jjNOIjUzf7i_qFoI

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 mint-intel-base-chain-native-eth-balance-567da04f
```

Example prompt: What's the current native ETH balance of the Base address 0x4838B106FCe9647Bdf1E7877BF73cE8B0BAD5f97? Give me both the wei and ETH amounts.

## When to prefer this

Use this endpoint when you need the native ETH balance of a specific Base chain address quickly and cheaply ($0.001 per call). Prefer it over Ethereum mainnet balance endpoints when the user's address is on Base (chain ID 8453). Choose it over broader multi-token balance endpoints when you only need the native ETH balance and want minimal latency and cost.

## Known failure modes

- Invalid or malformed address (non-0x-prefixed or wrong length) returns an error
- Address with zero balance returns wei: '0' and eth: '0.0' — not an error
- Network or RPC timeout may return a 5xx error
- Rate limiting or payment failure (x402) blocks the request

## How this service works

Native ETH balance of any Base address (wei + ETH, latest block) via eth_getBalance.

## Output

Returns a JSON object containing the queried Base address, its native ETH balance expressed as a wei string (full integer precision), and the same balance converted to ETH as a decimal string, all reflecting the latest block on Base mainnet.

## 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"
    },
    "pathParams": {
     "type": "object",
     "required": [
      "address"
     ],
     "properties": {
      "address": {
       "type": "string",
       "description": "0x-prefixed 20-byte EVM address"
      }
     },
     "additionalProperties": false
    },
    "queryParams": {
     "type": "object",
     "properties": {},
     "additionalProperties": false
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "required": [
      "address",
      "wei",
      "eth"
     ],
     "properties": {
      "eth": {
       "type": "string"
      },
      "wei": {
       "type": "string"
      },
      "address": {
       "type": "string"
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/mint-intel-base-chain-native-eth-balance-567da04f/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from mintintel.35-171-220-195.sslip.io](https://www.zero.xyz/host/mintintel.35-171-220-195.sslip.io/llms.txt)