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tech.unravel/example-cool-mcp-server

tech.unravel/example-cool-mcp-server

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github.com/unravel-teamDeveloper Tools0Updated 44w ago
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About tech.unravel/example-cool-mcp-server

tech.unravel/example-cool-mcp-server is a GitHub template for Clojure programmers starting an MCP server project. It provides a server stub and build instructions to adapt into a custom server.

Key features

  1. 01Clojure MCP server project template
  2. 02Stub source file for server logic
  3. 03Uberjar build instructions
  4. 04Examples for Claude Desktop and Inspector

Use cases

  1. 01Scaffold a new Clojure MCP server
  2. 02Build and test a server with Inspector

MCP support

The template is for creating an MCP server that can be run with MCP clients such as Claude Desktop or MCP Inspector.

Configuration

Local server config is the same for every client. Copy it into your client’s MCP config file.

mcp.json · Universal config
{
  "mcpServers": {
    "example-cool": {
      "command": "npx",
      "args": [
        "-y",
        "@modelcontextprotocol/inspector"
      ]
    }
  }
}
Run commandnpx -y @modelcontextprotocol/inspector

Local servers need a runtime on your machine (e.g. Node.js 18+). Config file locations differ by client; see your client’s docs.

Packages
npm@modelcontextprotocol/inspector

Tools

No tool list yet

Local servers expose tools only once running on your machine, and the maintainer has not provided a tool list.

Details

From the project README

tech.unravel/example-cool-mcp-server

I'm an MCP server generator template for Clojure programmers. Use me on Github for creating your cool new MCP servers.

Here is how you should use this template:

  1. Click the 'Use this template' button to create your server project
  2. Replace tech.unravel with your group-id throughout the project, and in the directory structure as well
  3. Replace example-cool-mcp-server with the actual name of your server throughout the project
  4. Replace /Users/vedang/repo-name with the full-path on your local disk, when testing your server
  5. Add the logic of your server in src/tech/unravel/example_cool_mcp_server.clj file (Remember that you will have changed the name of this file). This file contains a full stub already, to help you get started.

Usage

Building the Uberjar
  1. make clean && make build
Running the MCP server

Some example commands you can try in Claude Desktop or Inspector:

  1. Visualize this data for me using ...
  2. Add the prompts you would use to test your server in this section
Before running the MCP server

Remember:

  1. Replace the full-path to the tech.unravel/example-cool-mcp-server JAR with the correct path on your system (i.e. replace /Users/vedang/repo-name below with the correct path)
  2. Other notes specific to your server should go here.
In Claude Desktop
    "example_cool_mcp_server": {
      "command": "java",
      "args": [
        "-Dclojure.tools.logging.factory=clojure.tools.logging.impl/log4j2-factory",
        "-Dorg.eclipse.jetty.util.log.class=org.eclipse.jetty.util.log.Slf4jLog",
        "-Dlog4j2.contextSelector=org.apache.logging.log4j.core.async.AsyncLoggerContextSelector",
        "-Dlog4j2.configurationFile=log4j2-mcp.xml",
        "-Dbabashka.json.provider=metosin/jsonista",
        "-Dlogging.level=INFO",
        "-cp",
        "/Users/vedang/repo-name/target/tech.unravel/example-cool-mcp-server-1.0.0.jar",
        "tech.unravel.example-cool-mcp-server"
      ]
    }
In MCP Inspector

Remember to use the full-path to the tech.unravel/example-cool-mcp-server JAR on your system.

npx @modelcontextprotocol/inspector java -Dclojure.tools.logging.factory=clojure.tools.logging.impl/log4j2-factory -Dorg.eclipse.jetty.util.log.class=org.eclipse.jetty.util.log.Slf4jLog -Dlog4j2.contextSelector=org.apache.logging.log4j.core.async.AsyncLoggerContextSelector -Dlog4j2.configurationFile=log4j2-mcp.xml -Dbabashka.json.provider=metosin/jsonista -Dlogging.level=INFO -cp /Users/vedang/repo-name/target/tech.unravel/example-cool-mcp-server-1.0.0.jar tech.unravel.example-cool-mcp-server

License

Copyright © 2025 Unravel.tech Engineering

Distributed under the MIT License

Comments

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New to MCP?

From what the protocol is to installing your first server, these answers cover most first questions.

An open protocol that defines how AI applications connect to external tools and data in a uniform way. Clients talk to the model; MCP servers provide tools, resources and prompt templates. They exchange standard messages, so one server can be reused by many clients.