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ExMCP Test Server

Source

Test implementation of mcp server in Elixir

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Overview

ExMCP Test Server is a test implementation of an MCP (Model Context Protocol) server built in Elixir. It allows developers to experiment with the MCP protocol and provides a JSON-RPC 2.0 compliant interface.

To use the server, you need to run it locally using the command: sh mix run --no-halt To generate a release for the server, use the command: sh mix release and configure it in your claude_desktop_config.json.

  • JSON-RPC 2.0 compliant server implementation - Supports standard MCP protocol methods - Pluggable validation and middleware pipeline - Schema-driven request/response validation - OpenRPC specification included
  1. Testing MCP protocol interactions
  2. Developing applications using the MCP protocol
  3. Validating requests and responses for MCP servers

Add to your AI client

Use these steps to connect ExMCP Test Server in Cursor, Claude, VS Code, and other MCP-compatible apps. The same JSON appears in the Use with menu above for one-click copy.

Cursor

Add this to your .cursor/mcp.json file in your project root, then restart Cursor.

.cursor/mcp.json

{
  "mcpServers": {
    "ex-mcp-test-y86": {
      "command": "npx",
      "args": [
        "-y",
        "@modelcontextprotocol/server-ex-mcp-test-y86"
      ]
    }
  }
}

Claude Desktop

Add this server entry to the mcpServers object in your Claude Desktop config, then restart the app.

~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or %APPDATA%\Claude\claude_desktop_config.json (Windows)

{
  "mcpServers": {
    "ex-mcp-test-y86": {
      "command": "npx",
      "args": [
        "-y",
        "@modelcontextprotocol/server-ex-mcp-test-y86"
      ]
    }
  }
}

Claude Code

Add this to your project's .mcp.json file. Claude Code will detect it automatically.

.mcp.json (project root)

{
  "mcpServers": {
    "ex-mcp-test-y86": {
      "command": "npx",
      "args": [
        "-y",
        "@modelcontextprotocol/server-ex-mcp-test-y86"
      ]
    }
  }
}

VS Code (Copilot)

Add this to your .vscode/mcp.json file. Requires the GitHub Copilot extension with MCP support enabled.

.vscode/mcp.json

{
  "servers": {
    "ex-mcp-test-y86": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@modelcontextprotocol/server-ex-mcp-test-y86"
      ]
    }
  }
}

Windsurf

Add this to your Windsurf MCP config file, then restart Windsurf.

~/.codeium/windsurf/mcp_config.json

{
  "mcpServers": {
    "ex-mcp-test-y86": {
      "command": "npx",
      "args": [
        "-y",
        "@modelcontextprotocol/server-ex-mcp-test-y86"
      ]
    }
  }
}

Cline

Open Cline settings, navigate to MCP Servers, and add this server configuration.

Cline MCP Settings (via UI)

{
  "mcpServers": {
    "ex-mcp-test-y86": {
      "command": "npx",
      "args": [
        "-y",
        "@modelcontextprotocol/server-ex-mcp-test-y86"
      ]
    }
  }
}

FAQ

What is MCP?

MCP stands for Model Context Protocol, a protocol for managing context in applications.

What are the requirements to run ExMCP?

You need Elixir 1.14+ and Mix to run the server.

How can I see the API documentation?

The OpenRPC specification can be found in `priv/static/mcp-openrpc.json`.7:["$","div",null,{"className":"container mx-auto flex flex-col gap-4","children":["$L26","$L27",["$","$L28",null,{"currentProject":{"id":292,"uuid":"8b1b9ef6-0648-4837-902e-518b8922b1e6","name":"ex-mcp-test","title":"ExMCP Test Server","description":"Test implementation of mcp server in Elixir","avatar_url":"https://avatars.githubusercontent.com/u/21318813?v=4","created_at":"2024-12-13T13:01:42.102Z","updated_at":"2024-12-13T15:09:13.039Z","status":"created","author_name":"y86","author_avatar_url":"https://avatars.githubusercontent.com/u/21318813?v=4","tags":"[]","category":"developer-tools","is_featured":false,"sort":1,"url":"https://github.com/y86/ex-mcp-test","target":"_self","content":"$29","summary":"$2a","img_url":null,"type":null,"metadata":null,"user_uuid":null,"tools":null,"sse_url":null,"sse_provider":null,"sse_params":null,"is_official":false,"server_command":null,"server_params":null,"server_config":null,"allow_call":false,"is_innovation":false,"is_dxt":false,"dxt_manifest":null,"dxt_file_url":null,"is_audit":false},"randomProjects":[],"currentServerKey":"$undefined"}]]}]

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