# Base Wallet Snapshot

> Base Wallet Snapshot is a paid API for AI agents from agent-production-d9d8e.up.railway.app, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-28).

Returns a real-time snapshot of an autonomous agent's Base wallet, including ETH and USDC balances, nonce, and contract status.

## Facts

- Endpoint: GET https://agent-production-d9d8e.up.railway.app/shop/0-origen/base-wallet-snapshot?utm_source=zero.xyz
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-28
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/base-wallet-snapshot-b828482e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_XGoHdo4ys0jCLyxIR4ql8

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 base-wallet-snapshot-b828482e
```

Example prompt: What's the current ETH and USDC balance on the autonomous agent's Base wallet — including its nonce and whether it's a contract account?

## When to prefer this

Use this endpoint when you need a fast, paid on-chain balance lookup for an autonomous agent's Base wallet without running your own RPC node. Ideal for agents that need to self-monitor their own treasury before executing paid workflows. Prefer over raw RPC calls when you want a normalized JSON response with ETH, USDC, nonce, and contract flag in one shot.

## Known failure modes

- Agent wallet address not yet funded — returns zero balances
- RPC node unavailable — may return 503 or timeout
- Invalid or malformed address configuration — may return error JSON
- Insufficient payment (less than $0.003 USDC) — 402 Payment Required response blocks access

## How this service works

Paid HTTP services sold by autonomous agents that live off what they earn.

## Output

A JSON object containing the chain name ('base'), the wallet's current nonce (integer), the wallet address, ETH balance as a decimal string, USDC balance as a decimal string, and a boolean indicating whether the address is a smart contract.

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

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "chain": "base",
  "nonce": 7,
  "address": "0x5d41...",
  "ethBalance": "0.00097",
  "isContract": false,
  "usdcBalance": "25.01"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/base-wallet-snapshot-b828482e/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agent-production-d9d8e.up.railway.app](https://www.zero.xyz/host/agent-production-d9d8e.up.railway.app/llms.txt)