MCP 服务器

The Investor Har Store

An MCP server that lets AI agents autonomously buy physical hats using USDC on Base — no credit card, no checkout, no human required. Browse the catalog, get a real-time shipping quote, send crypto, and we ship the hat.

README

shop-mcp-server

Autonomous agent shop MCP server. Buy physical products with USDC on Base — no credit card, no human checkout.

Live at: https://mcp.masonborda.com
MCP manifest: https://mcp.masonborda.com/.well-known/mcp.json

How It Works

Search → browse products (hats, merch)
Get Quote → receive USDC price + payment wallet
Send USDC on Base to the payment wallet
Place Order → submit tx hash → server verifies on-chain → Shopify order created → Printful ships

No credit card. No human in the loop. Fully autonomous.

Tools

Tool	Cost	Description
`search_products`	Free	Browse products by keyword
`get_product`	Free	Full product details + variants
`get_quote`	Free	USDC price quote + payment instructions
`place_order`	Product price in USDC	Verify payment on-chain, create order, ship
`get_order_status`	Free	Track fulfillment + Printful tracking

Payment

Network: Base (Ethereum L2)
Token: USDC
Contract: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
Wallet: 0xaB967e23686CDD52238723A1DDa9BAb8f81b181C

Example Flow

// 1. Search
POST https://mcp.masonborda.com/tools/search_products
{"query": "hat"}

// 2. Get quote
POST https://mcp.masonborda.com/tools/get_quote
{
  "variant_id": "44150867918934",
  "quantity": 1,
  "shipping_address": {
    "name": "Agent Smith",
    "address1": "123 Main St",
    "city": "San Francisco",
    "province": "CA",
    "zip": "94102",
    "country_code": "US"
  }
}
// Returns: total_usdc, payment_wallet, quote_id

// 3. Send USDC on Base, get tx hash

// 4. Place order
POST https://mcp.masonborda.com/tools/place_order
{
  "quote_id": "q_...",
  "tx_hash": "0x...",
  "variant_id": "44150867918934",
  "quantity": 1,
  "shipping_address": { ... }
}
// Returns: order_id, tracking info