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Clojars MCP Server: MCP server, setup and security

Clojars MCP Server is an open-source MCP server that lets an AI agent retrieve current dependency information for Clojure libraries published on Clojars. Its repository has 6 stars and its last commit is from June 25, 2025 and it is licensed under MIT.

Inactive for over a year

What Clojars MCP Server does

According to its repository: “Up-to-date dependency information for Clojure libraries from Clojars.”

An MCP server gives an AI agent extra tools it calls during the conversation: the agent reads their description, decides to use them and gets the result back. Clojars MCP Server is listed under Web search and extraction, a category of 159 servers in the directory, where it ranks #130 by stars.

Installing and connecting Clojars MCP Server

No package or remote server is declared in the official MCP registry: you install it from source, following the repository README.

Like any MCP server, you declare it in your client's configuration (Claude Desktop, Claude Code, Cursor, VS Code, Codex…): a name, the command that starts it or its URL, and any environment variables. The client then starts it and lists its tools. Project language: TypeScript.

Security: what to check

An MCP server runs code with the rights you give it, and the model reads its tool descriptions: a malicious or compromised server can hijack the agent. Read the code, or pick a maintained and widely used server, before connecting it.

Points found for Clojars MCP Server:

  • Maintenance: no commit for 16 months. Possible flaws and protocol changes are no longer tracked.

Good practice: grant only the rights needed (least privilege), require human approval for irreversible actions, and run the AI agent security check.

Project activity and maintenance

Created on December 14, 2024, the Bigsy/Clojars-MCP-Server repository has 6 stars and 6 forks, with 0 open issues. It has more stars than 17% of the servers in the directory. Last change 16 months ago.

Stars measure attention, not quality: a recent, heavily promoted project can collect them fast, while a useful but niche server will have few.

WigoloWigolo : 5.5K5.5KExa MCP serverExa MCP server : 5.2K5.2KJobSpyJobSpy : 4.6K4.6KTolgeeTolgee : 4.1K4.1KArxiv MCP serverArxiv MCP server : 3.2K3.2KTrieveTrieve : 2.7K2.7KTavily MCPTavily MCP : 2.5K2.5KOpen webSearchOpen webSearch : 1.9K1.9KClojars MCP ServerClojars MCP Server : 66
GitHub stars of the most followed servers in the category (log scale); Clojars MCP Server in orange. Checked October 25, 2026.

Verdict

Clojars MCP Server is still a modest project: read its code and compare it with the alternatives before using it.

Strengths

  • Permissive licence (MIT)

Limitations

  • No commit for 16 months
  • Few visible users
  • Install from source

Avoid if…

  • Production use without reviewing the code

Frequently asked questions

How do I install Clojars MCP Server?

No package is declared in the MCP registry: clone the Bigsy/Clojars-MCP-Server repository, follow its README, then declare the start command in your client's MCP configuration.

Is Clojars MCP Server free?

The code is published under the MIT licence and can be used free of charge.

Is Clojars MCP Server safe?

Points to watch: maintenance. Give it minimum rights and approve sensitive actions.

Is it an official server?

Nothing says so: it is a project published by Bigsy on GitHub. Check who maintains it before giving it access.

What are the alternatives to Clojars MCP Server?

In the same category: Exa MCP server, Brave search MCP server, Arxiv MCP server, and JobSpy. Exa MCP server and Brave search MCP server score higher on our grid.

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Neutrality. No affiliate links. No vendor pays to be reviewed, rated or ranked. Reviews are directed by François Chollet, neutral and factual, and every data point is dated and sourced. How we score