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---
title: Echo - Universal MCP Host
emoji: 🔊
colorFrom: gray
colorTo: gray
sdk: docker
pinned: false
tags:
- mcp-in-action-track-consumer
- agents
- mcp
---
# Echo: The Universal MCP Host
**"Visualize the Invisible."**
Echo is a Neo-Brutalist, bidirectional Web Client for the Model Context Protocol (MCP). It acts as a "Universal Host" that can load any MCP Server and give it a UI.
## 🏆 Hackathon Submission (Track 2)
* **Track**: MCP in Action (Consumer)
* **Tag**: `mcp-in-action-track-consumer`
## 🚀 Key Features
### 1. Visual MCP Manager
Replacing `mcp.json` editing with a GUI.
* **App Store Style**: Visualize your tools as cards.
* **One-Click Connect**: Instant connection to MCP servers.
* **Status Monitoring**: Real-time connection health.
### 2. Bidirectional State Protocol (Innovation)
Standard MCP is request/response. Echo introduces **Client State Broadcasting**.
* **Protocol Inspector**: Visualize JSON-RPC traffic in real-time.
* **Blocking State**: Echo broadcasts when it is blocked (e.g., waiting for user confirmation).
* **Proactive Voice**: Connected AgentBell servers can listen for this state and speak *before* acting.
### 3. Universal Host
Echo is server-agnostic.
* It connects to `stdio` servers (like `server-memory`).
* It connects to python servers (like `agentbell`).
* It provides a standard LLM interface (OpenAI) to interact with tools.
---
## 🛠️ How to Use
1. **Enter your OpenAI API Key** in the settings (or via Environment Variable).
2. **Go to TOOLS**: See available servers.
3. **Click Connect** on "agentbell-voice".
4. **Go to SESSION**: Chat with the agent.
* Try: "Help me"
* Try: "Delete file test.txt" (Triggers Blocking State -> Inspector Highlight)
5. **Open INSPECTOR**: Watch the JSON-RPC traffic live.
---
## 📦 Setup (Local)
```bash
git clone https://huggingface.co/spaces/MCP-1st-Birthday/echo-agent
cd echo-agent
pip install -r requirements.txt
python app.py
```
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