# NewBotLabor Base Wallet Check

> NewBotLabor Base Wallet Check is a paid API for AI agents from newbotlabor--254ecdfcc2de11f19b541607ee4eb77e.web.val.run, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-22).

Looks up an Ethereum address on Base and returns its ETH balance, USDC balance, nonce, contract status, and recent USDC transfer activity.

## Facts

- Endpoint: GET https://newbotlabor--254ecdfcc2de11f19b541607ee4eb77e.web.val.run/api/base/wallet-check?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-22
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/newbotlabor-base-wallet-check-280a9a97
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_B8_3AlI0pevQvjAjb_tzq

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 newbotlabor-base-wallet-check-280a9a97
```

Example prompt: Can you do a quick wallet check on the Base address 0x174897b2c5B133feB08A8FB90856B08F9fce8647 and tell me its ETH balance, USDC balance, nonce, and whether it's a contract or a regular wallet?

## When to prefer this

Choose this endpoint when an AI agent needs a quick, no-account preflight check on a Base wallet — especially before executing payments, verifying counterparty funds, or confirming whether an address is a contract. It is ideal for autonomous agents using x402 micropayments since no API key or account registration is required. Prefer it over manual RPC calls or heavier blockchain indexer APIs when you only need a concise balance + nonce + contract status snapshot on Base.

## Known failure modes

- Invalid or malformed Ethereum address returns an error
- Address not found or never active on Base may return zero balances and nonce
- Payment failure via x402 (insufficient USDC for the $0.002 fee) blocks the request
- Network or RPC errors on Base may cause intermittent failures
- Missing required 'address' query parameter results in a validation error

## How this service works

Pay-per-call utilities for autonomous agents, paid with x402 (USDC on Base; no account, no API key).

## Output

Returns a JSON object containing the queried address, the chain ('base'), the account nonce, a human-readable one-liner summary, ETH balance, USDC balance, a boolean indicating whether the address is a smart contract, and counts of recent inbound and outbound USDC transfers.

## 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",
     "required": [
      "address"
     ],
     "properties": {
      "address": {
       "type": "string",
       "description": "EOA or contract address on Base"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "chain": "base",
  "nonce": 12,
  "address": "0x174897b2c5B133feB08A8FB90856B08F9fce8647",
  "oneLiner": "EOA nonce 12; 18.2961 USDC, 0.000000 ETH",
  "ethBalance": 0,
  "isContract": false,
  "usdcBalance": 18.29,
  "recentUsdcTransfers": {
   "inbound": 3,
   "outbound": 0
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/newbotlabor-base-wallet-check-280a9a97/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from newbotlabor--254ecdfcc2de11f19b541607ee4eb77e.web.val.run](https://www.zero.xyz/host/newbotlabor--254ecdfcc2de11f19b541607ee4eb77e.web.val.run/llms.txt)