Which integrations are available for this server?

Enables searching restaurants, retrieving menus, and placing food delivery orders through the A2A protocol integration with [DoorDash](/mcp/servers/integrations/doordash)'s agent service. Enables searching restaurants, retrieving menus, and placing food delivery orders through the A2A protocol integration with [Grubhub](/mcp/servers/integrations/grubhub)'s agent service. Provides payment processing and refund capabilities using the AP2 protocol with mandate-based authorization, verifying cryptographically signed user payment approvals before processing transactions. Enables searching restaurants, retrieving menus, and placing food delivery orders through the A2A protocol integration with [Uber](/mcp/servers/integrations/uber)Eats agent service.

mcp-a2a-ap2-im-hungry 🍔💳

MCP server with A2A protocol (food delivery) + AP2 protocol (payments with Mandates).

Demo

AP2 Demo

Quick Start

git clone https://github.com/tas1337/mcp-a2a-ap2-im-hungry.git cd mcp-a2a-ap2-im-hungry npm start

Services:

MCP Server: http://localhost:8000/mcp
Registry: http://localhost:8004
DoorDash/UberEats/Grubhub: 8001-8003 (A2A)
Stripe: http://localhost:8005 (AP2)

What's Different from mcp-a2a-im-hungry?

mcp-a2a-im-hungry	This project
A2A only	A2A + AP2
No payments	Stripe payments
—	Mandates (signed authorization)

What is AP2?

Problem: AI agents spending money. Who approved it?

AP2 = Payments with Mandates — cryptographically signed proof of user intent.

MANDATE = { userId, maxAmount, expires, signature }

Flow (matches real-world AP2):

User asks for cheeseburger 🍔
Your agent searches restaurants via A2A (discovers DoorDash/UberEats/Grubhub agents)
Your agent gets menus and delivery estimates
Your agent decides which restaurant (cheapest/fastest)
User authorizes payment → User's authorization service creates mandate (signed with user's private key)
Your agent requests authorization → Receives mandate from user
Your agent sends payment request WITH mandate to Stripe agent (via A2A)
Stripe agent VERIFIES mandate (signature valid? not expired? amount ok?)
If valid → Stripe processes payment ✅
Your agent places order with food delivery agent (DoorDash/UberEats/Grubhub via A2A)
🍔 Burger incoming!

Key Point: The agent NEVER creates mandates. User authorization creates them. Agent only uses them.

Project Structure

src/ ├── a2a-client.ts # Calls ANY agent (food or Stripe) ├── tools.ts # Food tools ├── ap2-tools.ts # Payment tools (requests user authorization) ├── user-authorization.ts # User creates mandates (real-world: wallet/auth service) mock-agents/ ├── food-delivery/ # DoorDash, UberEats, Grubhub ├── payments/ # Stripe (verifies mandates!) └── registry/ # Agent discovery

Tools

Tool	Description
`search_restaurants`	Search food (A2A)
`get_menu`	Get menu (A2A)
`place_order`	Order food (A2A)
`process_payment`	Pay via Stripe (AP2 + Mandate)
`process_refund`	Refund via Stripe (AP2 + Mandate)