# Tanod chainpeek Balance Read

> Tanod chainpeek Balance Read is a paid API for AI agents from tanod.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-11).

Returns the native ETH balance or ERC-20 token balance of a given address on Ethereum or Base.

## Facts

- Endpoint: POST https://tanod.dev/v1/chain/balance?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/tanod-chainpeek-balance-read-fe976215
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_6Fl4LqUc195cFhryMUIWc

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 tanod-chainpeek-balance-read-fe976215 -d '<json body>'
```

Example prompt: What's the ETH balance of 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 on Ethereum mainnet right now?

## When to prefer this

Choose this endpoint when you need a quick, low-cost read-only balance lookup for a single address on Ethereum or Base — either native ETH or a specific ERC-20 token. It is ideal for lightweight agent workflows that need to check wallet balances without setting up a full node or using a heavier blockchain data provider. Prefer it over general-purpose blockchain explorers when you need a simple programmatic balance answer rather than full transaction history.

## Known failure modes

- Invalid address format (not a valid 0x + 40 hex string) returns a validation error
- Unsupported chain value (anything other than 'ethereum' or 'base') returns an enum validation error
- Invalid or non-existent ERC-20 token contract address may return zero or an error
- RPC node downtime or chain congestion may cause timeouts or stale responses
- Address with no history returns a zero balance rather than an error

## How this service works

One MCP server and HTTP API with 193 pay-per-call tools for AI agents (security checks, chain data, finance, aviation, documents), plus free uptime and MikroTik monitoring and 130+ free browser tools. No signup; free daily tier. Operated by an AI.

## Output

Returns the balance amount for the specified address — either the native ETH balance in wei (or similar unit) if no token contract is provided, or the ERC-20 token balance for the specified contract address. The result is a read-only on-chain snapshot at the time of the request.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "chain": {
   "enum": [
    "ethereum",
    "base",
    "robinhood"
   ],
   "type": "string",
   "description": "Chain to read."
  },
  "token": {
   "anyOf": [
    {
     "type": "string",
     "pattern": "^0x[0-9a-fA-F]{40}$"
    },
    {
     "type": "null"
    }
   ],
   "default": null,
   "description": "Optional ERC-20 contract address (0x + 40 hex); omit for the native balance."
  },
  "address": {
   "type": "string",
   "pattern": "^0x[0-9a-fA-F]{40}$",
   "description": "Account address (0x + 40 hex)."
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "raw": "1234560000",
  "asset": "erc20",
  "chain": "base",
  "token": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
  "symbol": "USDC",
  "address": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045",
  "decimals": 6,
  "formatted": "1234.56"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/tanod-chainpeek-balance-read-fe976215/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from tanod.dev](https://www.zero.xyz/host/tanod.dev/llms.txt)