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

# Human-Agent Interaction Protocol

> Streamline real-time, multi-modal exchanges between user-facing applications and AI agents

## What is HAIP?

The Human-Agent Interaction Protocol (HAIP) is an open standard designed to streamline real-time, multi-modal exchanges between user-facing web, mobile, and voice applications and AI agents. It complements the Model Context Protocol (MCP): HAIP focuses on the human-agent layer, acting as a universal translator between frontend interfaces and intelligent backends, while MCP governs tool execution.

### Features

* Re-establishing dropped connections & ensuring message order.
* Multimodal transactions audio and text.
* Allowing multiple users and LLMs to share a conversation (transaction).
* Letting the user know about MCP (Model Context Protocol) calls.
* Transaction history, transaction management, schema validation, custom tooling, logging, authentication and more.

## **Available Packages**

<CardGroup cols={3}>
  <Card title="@haip/sdk" icon="code">
    [![npm
    version](https://badge.fury.io/js/%40haip%2Fsdk.svg)](https://badge.fury.io/js/%40haip%2Fsdk)

    <br />

    TypeScript SDK for HAIP
  </Card>

  <Card title="@haip/server" icon="server">
    [![npm
    version](https://badge.fury.io/js/%40haip%2Fserver.svg)](https://badge.fury.io/js/%40haip%2Fserver)

    <br />

    Reference HAIP server
  </Card>

  <Card title="@haip/cli" icon="terminal">
    [![npm
    version](https://badge.fury.io/js/%40haip%2Fcli.svg)](https://badge.fury.io/js/%40haip%2Fcli)

    <br />

    Command-line interface
  </Card>
</CardGroup>

<Card title="Get Started" icon="rocket" href="/quickstart" horizontal>
  Follow our quickstart guide to implement HAIP in your application.
</Card>

<Card title="HAIP CLI" icon="terminal" href="/cli/overview" horizontal>
  Use the command-line interface for testing and monitoring HAIP servers.
</Card>

## Key Features

<Columns cols={2}>
  <Card title="Multi-modal Interaction" icon="microphone" href="/essentials/messaging">
    Native support for text chat and audio streams with seamless switching.
  </Card>

  <Card title="Asynchronous Tools" icon="gear" href="/essentials/tools">
    Non-blocking agent workflows with real-time progress updates.
  </Card>

  <Card title="Robust Streaming" icon="arrow-up" href="/essentials/transport">
    Low-latency chunk delivery with reconnection and de-duplication.
  </Card>

  <Card title="Transport Agnostic" icon="network-wired" href="/essentials/websocket">
    Works over WebSockets, SSE, HTTP streaming, or any message bus.
  </Card>
</Columns>

## Quick Implementation

<Columns cols={2}>
  <Card title="WebSocket Connection" icon="plug" href="/essentials/websocket">
    Establish bidirectional streaming communication with WebSockets.
  </Card>

  <Card title="Server-Sent Events" icon="radio" href="/essentials/sse">
    Use SSE for one-way streaming from server to client.
  </Card>

  <Card title="Authentication" icon="shield" href="/essentials/authentication">
    Secure your connections with JWT Bearer tokens.
  </Card>

  <Card title="Flow Control" icon="sliders" href="/essentials/flow-control">
    Manage back-pressure and prevent overwhelming your system.
  </Card>
</Columns>

## Protocol Features

<Columns cols={2}>
  <Card title="Event Sequencing" icon="list-ol" href="/essentials/messaging">
    Tolerant of out-of-order or overlapping events with automatic replay.
  </Card>

  <Card title="Tool Integration" icon="wrench" href="/essentials/tools">
    Dynamic advertisement of tools and schemas with seamless invocation.
  </Card>

  <Card title="Framework Agnostic" icon="code" href="/examples/basic-chat">
    Works with React, Vue, Angular, native mobile or any framework.
  </Card>

  <Card title="MCP Compatibility" icon="link" href="/essentials/tools">
    Seamless integration with Model Context Protocol for tool execution.
  </Card>
</Columns>

## Ready to build?

<Card title="View API Reference" icon="book-open" href="/api-reference/openapi">
  Explore the complete HAIP API specification and event schemas.
</Card>