ExMCP Test Server MCP Server

What is ExMCP Test Server?

An MCP (Model Context Protocol) server implementation in Elixir that provides a test implementation for experimenting with the protocol. It is designed for developers who want to explore MCP using a JSON-RPC 2.0 compliant server built with Elixir.

How to use ExMCP Test Server?

Run the server locally with mix run --no-halt. For production use, generate a release with mix release and add it to your claude_desktop_config.json using the command path/to/your/release/bin/my_app start under the mcpServers key.

Key features of ExMCP Test Server

• JSON-RPC 2.0 compliant server implementation
• Standard MCP protocol methods are supported
• Pluggable validation and middleware pipeline
• Schema-driven request/response validation
• OpenRPC specification is included

Use cases of ExMCP Test Server

• Experimenting with the Model Context Protocol (MCP)
• Testing MCP clients against a local server
• Learning MCP through a minimal reference implementation