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

1. Search → browse products (hats, merch)

2. Get Quote → receive USDC price + payment wallet

3. Send USDC on Base to the payment wallet

4. 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

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

Stack

• FastAPI — MCP server

• Shopify Admin API — order creation

• Printful — production + fulfillment

• Base (on-chain) — USDC payment verification

• fly.io — hosting

Products

• Accredited Investor Hat — $30 USDC

• Fiduciary Hat — $20 USDC

• Retail Investor Hat — $15 USDC

• Qualified Institutional Buyer Hat — $500 USDC

License

MIT