MPP Bazaar 🌯

A food truck ordering API where AI agents browse, build a cart, and pay dynamic totals using the Machine Payments Protocol.

Why This Matters

x402 only supports static pricing — every request costs the same. Real commerce needs dynamic, computed totals: combo discounts, bulk pricing, tax calculations. MPP Bazaar demonstrates this with a fun food truck API.

Agent: "I want 2 Quantum Burritos + Stack Overflow Fries + Sudo Soda"
Server: "That's $33.00 - $4.50 combo discount + $2.53 tax = $31.03"
Agent: *pays exactly $31.03 via Tempo*
Server: "Order ORD-1001 confirmed!"

Quick Start

npm install
npm run dev
# Open http://localhost:8787 for the UI

Test with mppx CLI

# Create a testnet wallet
npx mppx account create

# Place an order (agent-style)
npx mppx http://localhost:8787/api/order \
  -X POST \
  -d '{"items":[{"id":"quantum-burrito","qty":1},{"id":"stack-fries","qty":1},{"id":"sudo-soda","qty":1}]}'

Deploy

npx wrangler deploy

API

Pricing Engine

The server computes every total dynamically:

• Combo discount (15%): Order a Main + Side + Drink together
• Bulk discount (10%): Any item with qty >= 3
• SF Tax (8.875%): Applied after discounts

Architecture

┌─────────────┐     ┌──────────────┐     ┌─────────────┐
│  Agent/CLI  │────>│  Hono API    │────>│  Pricing    │
│  (mppx)     │<────│  + MPP/Tempo │<────│  Engine     │
└─────────────┘     └──────────────┘     └─────────────┘
                           │
                    ┌──────┴──────┐
                    │  Frontend   │
                    │  (vanilla)  │
                    └─────────────┘

Stack

• Runtime: Cloudflare Workers
• Framework: Hono
• Payments: mppx + Tempo (pathUSD)
• Frontend: Vanilla HTML/CSS/JS (no frameworks)

Menu

License

MIT