# chain-native-balance

> chain-native-balance is a paid API for AI agents from chain.intel.rallylive.ca, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-02).

Returns the live native coin balance (ETH, POL, BNB, etc.) of any wallet or contract address on Base and other EVM chains.

## Facts

- Endpoint: GET https://chain.intel.rallylive.ca/chain/balance?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/chain-native-balance-56645d2d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_KQhUZ0CQgwx2qZpDEGVGZ

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 chain-native-balance-56645d2d
```

Example prompt: What's the live ETH balance of wallet address 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 on Base right now?

## When to prefer this

Use this endpoint when you need a real-time, live on-chain native coin balance (ETH/POL/BNB) for any EVM-compatible address across Base, Ethereum, Arbitrum, Optimism, Polygon, or BSC. Prefer this over general wallet-profile endpoints when you only need the raw native balance and not a full wallet analysis. It is the lightest and cheapest call for a single balance lookup at $0.01 per call.

## Known failure modes

- Invalid or malformed address format returns an error
- Unsupported chain prefix returns an error or falls back to Base
- Address with no activity may return a zero balance
- Network congestion or RPC issues may cause delayed or failed reads
- Payment of $0.01 USDC required per call; insufficient payment returns a 402 error

## How this service works

Native coin balance (ETH/POL/BNB) of any address, read live from the chain. Default chain Base; prefix another: ethereum:, arbitrum:, optimism:, polygon:, bsc:. $0.01 per call.

## Output

Returns the live native coin balance of the queried address on the specified EVM chain, expressed in the chain's native currency (e.g. ETH on Ethereum/Base/Arbitrum/Optimism, POL on Polygon, BNB on BSC). Data is read directly from the chain in real time.

## 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",
     "properties": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/chain-native-balance-56645d2d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from chain.intel.rallylive.ca](https://www.zero.xyz/host/chain.intel.rallylive.ca/llms.txt)