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

# Overview

> What is Snack Money API?

Snack Money is an **x402-enabled micropayment API** that allows applications and AI agents to integrate **permissionless payments** tied to **social identities**.

## Key Features

* **USDC on Base and Solana** for instant settlements
* Support for **X (Twitter)**, **Farcaster**, **GitHub**, **Email**, **Web**, and **Instagram** payments
* **x402 protocol** for standardized HTTP payment flows
* **A2A protocol** for agent-to-agent communication and payments
* **CLI tool** for command-line payments
* **Multiple SDKs** for easy integration

## What is x402?

The x402 protocol standardizes HTTP `402 Payment Required` flows, enabling:

* Automatic payment negotiation
* Tokenized access with proof of payment
* Seamless web-native monetization

Learn more in our [x402 guide](/introduction/x402).

## What is A2A?

The A2A (Agent-to-Agent) protocol enables AI agents to discover and communicate with each other. Snack Money implements A2A with the X402 extension for integrated payments.

Learn more in our [A2A guide](/introduction/a2a).

## Getting Started

Choose your preferred integration method:

### For Developers

* [**Quick Start**](/introduction/getting-started) - Simplest API integration with axios
* [**SDK Examples**](/examples/overview) - Production-ready integrations with various SDKs
* [**API Reference**](/api-reference/introduction) - Complete API documentation

### For Command Line

* [**CLI Tool**](/cli/overview) - Send payments directly from your terminal
* [**CLI Quick Start**](/cli/quick-start) - Get started in minutes