Overview
What is MCP Echo Server?
A simple Model Context Protocol (MCP) server that echoes input back as-is. It is intended for testing, debugging, or demonstration of MCP tool calls.
How to use MCP Echo Server?
Install with pip install -e . or uv pip install -e ., then run directly with python src/echo_server.py. For Claude Desktop, add the server to the mcpServers configuration with the command python and the path to echo_server.py.
Key features of MCP Echo Server
- Single tool:
echo(message: str) -> str - Returns the input message unchanged
- Installed via pip or uv
- Runs standalone or inside Claude Desktop
- Minimal and lightweight MCP server
Use cases of MCP Echo Server
- Testing MCP client implementations
- Demonstrating basic tool invocation
- Debugging message passing in MCP
FAQ from MCP Echo Server
What tools are available?
Only one tool: echo(message: str) -> str, which returns the input string unchanged.
How do I run the server?
Run python src/echo_server.py from the project root, or configure it in Claude Desktop’s mcpServers block.
What are the installation methods?
Install via pip install -e . or uv pip install -e ..
What dependencies or runtime are required?
—
Is there authentication or transport configuration?
—
