ExMCP Test Server MCP Server

@y86

Repository

Basic information

About ExMCP Test Server MCP Server

Test implementation of mcp server in Elixir

ExMCP Test Server MCP Server config

No standard config provided

This server doesn't expose a parseable MCP config block in its README. See the repository for install instructions.

Repository

ExMCP Test Server MCP Server tools

Tool list not available yet

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Overview

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

Frequently asked questions

What runtime dependencies are required?

Elixir 1.14+ and Mix. The server relies on `PhxJsonRpc`, `ExJsonSchema`, and `Jason`.

Which MCP methods does the server implement?

`initialize`, `notifications/initialized`, `prompts/list`, `resources/list`, `tools/list`, and `tools/call`.

How can I run the server locally or as a release?

Run locally with `mix run --no-halt`. For a release, use `mix release` and configure the binary in `claude_desktop_config.json` with the `start` argument.

Where is the OpenRPC specification located?

It can be found at `priv/static/mcp-openrpc.json` in the project.

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