Io.modelcontext/clojure Sdk MCP Server

@unravel-team

代码仓库

基本信息

分类

开发工具

许可证

MIT

传输方式

stdio

作者

unravel-team

关于 Io.modelcontext/clojure Sdk MCP Server

A Clojure SDK to create MCP servers (and eventually clients)

Io.modelcontext/clojure Sdk MCP Server 配置

使用下面的配置,将此服务器添加到你的 MCP 客户端。

{
  "mcpServers": {
    "mcp-clojure-sdk": {
      "command": "npx",
      "args": [
        "@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",
        "examples/target/io.modelcontextprotocol.clojure-sdk/examples-1.2.0.jar",
        "calculator_server"
      ]
    }
  }
}

Io.modelcontext/clojure Sdk MCP Server 工具

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点击上方按钮,在临时沙箱中运行此服务器并实时获取工具列表。

概览

What is io.modelcontext/clojure-sdk?

A Clojure SDK for building servers that implement the Model Context Protocol (MCP). It provides core components including server implementation, STDIO transport, error handling, and protocol specifications. It is aimed at Clojure developers who want to create MCP servers that expose tools, resources, and prompts to AI clients like Claude Desktop.

How to use io.modelcontext/clojure-sdk?

Add the dependency via git coordinates in deps.edn or use the provided deps-new template or GitHub template to quickly scaffold a new project. Build the examples jar with make clean && make examples-jar, then run any example server (e.g., calculator_server, vegalite_server, code_analysis_server) using java with the required JVM properties and classpath.

Key features of io.modelcontext/clojure-sdk

Core server implementation handling MCP request/response cycles
STDIO transport layer using core.async channels
Custom error handling and protocol specification validation
Example servers: calculator, Vega-lite charting, and code analysis
Templates for quick project scaffolding (deps-new, GitHub)

Use cases of io.modelcontext/clojure-sdk

Expose arithmetic tools (add, subtract, multiply, etc.) to an MCP client
Generate Vega-lite charts from data via a dedicated tool server
Provide analysis prompts for code review or poetry generation
Build custom MCP servers in Clojure with minimal boilerplate

常见问题

What is the MCP protocol and how does this SDK relate to it?

The Model Context Protocol (MCP) is a client-server protocol for AI assistants to interact with tools, resources, and prompts. This SDK implements that protocol in Clojure, handling initialization, discovery, and interaction phases.

What dependencies or runtime requirements does this SDK have?

It requires a Java runtime and Clojure build tools (deps.edn). The Vega-lite example additionally needs the `vl-convert` CLI installed.

How can I create a new MCP server using this SDK?

Use the `deps-new` template `mcp-clojure-server-deps-new` or the GitHub template `example-cool-mcp-server` to quickly start a new project.

How do I run the example servers?

Build the examples jar with `make clean && make examples-jar`, then invoke each server via `java` with the specified JVM properties and classpath. Examples are configured for Claude Desktop or MCP Inspector.

What transport does this SDK support?

The SDK implements STDIO transport for communication between client and server.

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