# x402 Apostle Chain Digital Twin — Wallet Operations

> x402 Apostle Chain Digital Twin — Wallet Operations is a paid API for AI agents from twin.unykorn.org, paid per call via x402, $0.25/call, status unknown (last checked 2026-10-01).

Fetches native and USDC token balances across Base, XRPL, and Stellar chains in a single pay-per-call request

## Facts

- Endpoint: POST https://twin.unykorn.org/wallet-ops?utm_source=zero.xyz
- Price: $0.25/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-01
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-apostle-chain-digital-twin-wallet-operations-e993f87c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Y0jyiujaIKGtvKmAt0NWy

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-apostle-chain-digital-twin-wallet-operations-e993f87c -d '<json body>'
```

Example prompt: What are my ETH and USDC balances on Base and XRPL right now?

## When to prefer this

Choose this endpoint when you need wallet balances for one or more of Base, XRPL, or Stellar in a single authenticated call, especially if you are operating within the x402 micropayment protocol and want a receipt-bearing, auditable response. Prefer it over generic RPC calls when you need multi-chain aggregation with a single request and a unified receipt.

## Known failure modes

- Invalid or unsupported chain name in the chains array returns an error
- Payment of 0.25 USDC not attached or insufficient causes a 402 response
- Network timeout connecting to chain RPC endpoint (mainnet.base.org or equivalent)
- Malformed request body missing the params or chains field
- Rate limiting or provider downtime on the underlying chain node

## How this service works

Live multi-chain treasury balance read — Genesis402 / UnyKorn Operator Network

## Output

Returns a JSON object with ok: true, a type field set to 'wallet-ops', a receipt object containing the transaction hash, USD amount charged, and a receipt ID, and a balances object keyed by chain name, each containing ETH and USDC decimal amounts plus the RPC source URL used.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "params": {
   "type": "object",
   "properties": {
    "chains": {
     "type": "array",
     "items": {
      "enum": [
       "base",
       "xrpl",
       "stellar"
      ],
      "type": "string"
     }
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "type": "wallet-ops",
  "receipt": {
   "tx_hash": "0x<64hex>",
   "amount_usd": 0.25,
   "receipt_id": "g402-<16hex>"
  },
  "balances": {
   "base": {
    "eth": "<decimal>",
    "usdc": "<decimal>",
    "source": "https://mainnet.base.org"
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-apostle-chain-digital-twin-wallet-operations-e993f87c/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from twin.unykorn.org](https://www.zero.xyz/host/twin.unykorn.org/llms.txt)