# x402-toolbox ETH Balances

> x402-toolbox ETH Balances is a paid API for AI agents from x402-toolbox.shablony-pro.workers.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-02).

Fetches Ethereum wallet balances for one or more addresses via a pay-per-call x402 micropayment endpoint

## Facts

- Endpoint: GET https://x402-toolbox.shablony-pro.workers.dev/chain/eth-balances?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-toolbox-eth-balances-9af0487d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_0TunJjPRsmdv7dNj9tHn9

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 x402-toolbox-eth-balances-9af0487d
```

Example prompt: What's the current ETH balance for wallet address 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045?

## When to prefer this

Choose this endpoint when you need a no-signup, no-API-key way to query ETH balances on demand, paying only $0.002 USDC per call via x402 micropayment. Ideal for AI agents that need ephemeral, one-off balance checks without managing credentials or subscriptions.

## Known failure modes

- Invalid or malformed Ethereum address returns an error response
- Payment not received or insufficient USDC results in 402 rejection
- Network or RPC issues may cause lookup failures
- Rate limits or worker timeouts on the Cloudflare edge can produce 5xx errors

## How this service works

309 deterministic pay-per-call tools for AI agents over x402 (USDC, Base). No signup, no API key: the payment is the identity.

## Output

Returns a JSON object with ok and paid status flags along with the ETH balance data for the queried Ethereum address or addresses, sourced from on-chain state.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "schema": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "paid": true
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-toolbox-eth-balances-9af0487d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-toolbox.shablony-pro.workers.dev](https://www.zero.xyz/host/x402-toolbox.shablony-pro.workers.dev/llms.txt)