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

# Introduction

> Virtual cards for AI agents

# Proxy

Proxy issues virtual cards for AI agents with policy-based spending controls.

<CardGroup cols={2}>
  <Card title="Quickstart" icon="rocket" href="/quickstart">
    Issue your first card in minutes
  </Card>

  <Card title="API Reference" icon="code" href="/api-reference/introduction">
    Explore the API
  </Card>
</CardGroup>

## How It Works

<Steps>
  <Step title="Create a Customer">
    Register the entity who will fund card spending.
  </Step>

  <Step title="Register an Agent">
    Create an autonomous actor that spends on behalf of the customer.
  </Step>

  <Step title="Issue a Card">
    Create a virtual card with spending policies and limits.
  </Step>

  <Step title="Declare Intent">
    Before spending, the agent declares what it plans to purchase.
  </Step>

  <Step title="Access Credentials">
    The agent retrieves card credentials and completes the purchase.
  </Step>
</Steps>

## Core Concepts

| Concept      | Description                                          |
| ------------ | ---------------------------------------------------- |
| **Customer** | Entity who owns funds and cards                      |
| **Agent**    | AI or automation that spends on behalf of a customer |
| **Card**     | Virtual spending instrument with policy controls     |
| **Intent**   | Pre-transaction declaration of planned purchase      |

## Next Steps

<CardGroup cols={2}>
  <Card title="Customers" icon="user" href="/concepts/customers">
    Learn about customers
  </Card>

  <Card title="Agents" icon="robot" href="/concepts/agents">
    Learn about agents
  </Card>

  <Card title="Cards" icon="credit-card" href="/concepts/cards">
    Learn about cards
  </Card>

  <Card title="Webhooks" icon="webhook" href="/concepts/webhooks">
    Real-time notifications
  </Card>
</CardGroup>