> ## Documentation Index
> Fetch the complete documentation index at: https://www.agentcommercekit.com/llms.txt
> Use this file to discover all available pages before exploring further.

# End-to-End Demo

> Comprehensive example demonstrating combined ACK-ID and ACK-Pay protocol flows.

## Overview

This End-to-End (E2E) demo showcases the integration and seamless interaction between ACK's core protocols:

* **ACK-ID** (Identity Management)
* **ACK-Pay** (Payment Processing)

Through this interactive command-line demo, you'll observe a realistic flow demonstrating secure agent identity verification alongside automated, verifiable payment transactions.

## Getting Started

Before running this demo, please complete the setup steps from the [Quickstart Guide](./quickstart).

## Running the Demo

You can run the E2E demo using the following command from the repository root:

```sh theme={null}
pnpm demo:e2e
```

Alternatively, navigate directly into the demo directory (`./demos/e2e`) and run:

```sh theme={null}
pnpm run demo
```

## Demo Overview

The demo walks you through a scenario where:

<Steps>
  <Step title="Agent Initialization">
    Agents (Client and Server) and their respective owners initialize their identities using ACK-ID standards (Decentralized Identifiers and Verifiable Credentials).
  </Step>

  <Step title="Identity Verification">
    Client Agent and Server Agent verify each other's identities securely and
    efficiently before initiating transactions (utilizing ACK-ID).
  </Step>

  <Step title="Payment Request">
    Server Agent requires payment from the Client Agent (utilizing ACK-Pay),
    issuing a formal Payment Request specifying acceptable payment methods.
  </Step>

  <Step title="Payment Execution">
    Client Agent completes the payment transaction, showcasing automated payment
    verification.
  </Step>

  <Step title="Receipt Issuance and Verification">
    Upon successful payment, a receipt Service issues a cryptographically
    verifiable receipt.
  </Step>

  <Step title="Resource Access">
    Using the receipt, the Client Agent successfully accesses the requested resource from the Server Agent.
  </Step>
</Steps>

## Key Components Demonstrated

* Integrated Identity Verification (ACK-ID)
* Payment Initiation, Processing, and Receipt Verification (ACK-Pay)
* Secure Agent-to-Agent interaction with cryptographic validation

## Further Exploration

* [View End-to-End Demo Source Code](https://github.com/agentcommercekit/ack/tree/main/demos/e2e)
* [ACK Documentation](https://agentcommercekit.com)
* [ACK-ID Protocol Details](/ack-id/introduction)
* [ACK-Pay Details](/ack-pay/introduction)