Overview
What is MCP Echo Server?
MCP Echo Server is a lightweight Python-based microservice that receives messages and returns them back to the client, serving as a basic diagnostic and testing tool within the MCP framework.
How to use MCP Echo Server?
Install via pip: pip install chuk-mcp-echo-server, then run chuk-mcp-echo-server from the command line. Use the echo tool with a message string to echo back input.
Key features of MCP Echo Server
- Message echo: returns any sent message
- Comprehensive input validation using Pydantic models
- Async server architecture built with asyncio
- Flexible configuration via environment variables and config files
Use cases of MCP Echo Server
- Testing connectivity and message flow in MCP applications
- Validating client-server communication during development
- Debugging and verifying tool invocation behavior
FAQ from MCP Echo Server
What does it do vs alternatives?
It provides simple echo functionality for diagnostic and testing purposes within the MCP framework.
What are the runtime requirements?
Python 3.11 or higher, with core dependencies mcp (>=1.6.0), pydantic (>=2.11.2), and PyYAML (>=6.0.2).
How do I install it?
Install from PyPI via pip install chuk-mcp-echo-server or from source by cloning the repository.
Can I use it programmatically?
Yes—import and call main() from chuk_mcp_echo_server.main.
Does it support configuration?
Yes, through environment variables (e.g., NO_BOOTSTRAP) and configuration files.
