Clojars MCP Server

What is Clojars MCP Server?

A Model Context Protocol (MCP) server that provides tools for fetching dependency information from Clojars, the Clojure community's artifact repository. It is designed for developers using Claude who need to look up Clojars dependency versions.

How to use Clojars MCP Server?

After building the server from source with npm install and npm run build, add it to your Claude configuration (e.g., cline_mcp_settings.json or claude_desktop_config.json) by specifying the path to the built index.js as a command-line argument for node. Once configured, Claude automatically discovers the server and its tools become available via the use_mcp_tool command.

Key features of Clojars MCP Server

• Get the latest version of any Clojars dependency
• Check if a specific version of a dependency exists
• Simple, focused responses
• Easy integration with Claude through MCP

Use cases of Clojars MCP Server

• Ask Claude “What is the latest version of metosin/reitit?” and receive the answer.
• Verify whether a specific version (e.g., 0.7.2) of a Clojars dependency exists.
• Automatically resolve dependency versions while discussing a Clojure project in Claude.
• Let Claude fetch version info directly during code generation or dependency management conversations.

FAQ from Clojars MCP Server

What tools does the Clojars MCP Server expose?

It exposes two tools: get_clojars_latest_version (returns the latest version of a dependency) and check_clojars_version_exists (checks if a particular version exists). Both require a dependency in group/artifact format.

How do I install the Clojars MCP Server?

Clone the repository, run npm install and npm run build, then add a clojars-deps-server entry to your Claude MCP configuration file pointing to the built build/index.js with the node command.

Does the server require any external services or authentication?

The server queries the public Clojars API; no API keys or authentication are mentioned in the README.

What runtime does the server need?

Node.js and npm. The server is built as a Node.js application.

Can I use the server with tools other than Claude?

The README only describes integration with Claude via MCP. It does not mention other MCP hosts.