# Agent Commerce Desk – Base Wallet USDC Readiness Check

> Agent Commerce Desk – Base Wallet USDC Readiness Check is a paid API for AI agents from x402-wallet-readiness-service.vercel.app, paid per call via x402, $2/call, status unknown (last checked 2026-09-14).

Checks whether a given Base (EVM) wallet address is ready to receive USDC, returning contract status and native USDC balance via a paid x402 API.

## Facts

- Endpoint: GET https://x402-wallet-readiness-service.vercel.app/api/agent-commerce-receipt
- Price: $2/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agent-commerce-desk-base-wallet-usdc-readiness-check-2f2fb1d5
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ytiMW9SPcGFw5qxTB322G

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 agent-commerce-desk-base-wallet-usdc-readiness-check-2f2fb1d5
```

Example prompt: Can you check if the Base wallet 0x820a7bf90d944bb26bfD9b62Ab172Fc3A0829cB9 is ready to receive USDC — I need to know whether it's a contract and what its current native USDC balance is before I send a payment?

## When to prefer this

Use this endpoint when you need to verify that a specific Base wallet address is properly configured and funded to receive USDC before initiating an agent payment or x402 transaction. It is ideal for pre-flight checks in agentic payment workflows on Base, especially when you need to distinguish between EOA wallets and smart contracts and confirm USDC liquidity.

## Known failure modes

- Invalid or malformed wallet address (not matching 0x[40 hex chars] pattern) returns a validation error
- Missing required 'address' query parameter causes a 400 error
- Payment not fulfilled (x402 flow incomplete) results in a 402 Payment Required response before data is returned
- Wallet address not found on Base network may return zero balances with no error
- Downstream Base RPC unavailability could cause timeout or 5xx error

## How this service works

Checks Base wallets for USDC receiving readiness, publishes paid x402 data APIs, and sells fixed-price agent payment, developer-tool, VPS, wallet-risk, and QA implementation work.

## Output

Returns a JSON object with agent identity info, payment configuration details (asset, network, price, facilitator), receipt type, and wallet readiness data including whether the address is a smart contract and its current native USDC balance on Base.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "address"
     ],
     "properties": {
      "address": {
       "type": "string",
       "pattern": "^0x[a-fA-F0-9]{40}$",
       "description": "EVM wallet address on Base."
      }
     },
     "additionalProperties": false
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "agent": {
   "name": "Agent Commerce Desk",
   "wallet": "0x820a7bf90d944bb26bfD9b62Ab172Fc3A0829cB9"
  },
  "payment": {
   "asset": "native USDC",
   "payTo": "0x820a7bf90d944bb26bfD9b62Ab172Fc3A0829cB9",
   "network": "Base",
   "priceUsd": 2,
   "facilitator": "https://facilitator.world.fun",
   "networkCaip2": "eip155:8453",
   "assetContract": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
  },
  "receiptType": "agent-commerce-readiness",
  "walletReadiness": {
   "address": "0x820a7bf90d944bb26bfD9b62Ab172Fc3A0829cB9",
   "is_contract": false,
   "native_usdc_balance": "0"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agent-commerce-desk-base-wallet-usdc-readiness-check-2f2fb1d5/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-wallet-readiness-service.vercel.app](https://www.zero.xyz/host/x402-wallet-readiness-service.vercel.app/llms.txt)