nREPL MCP Server

Name: nREPL MCP Server
Availability: InStock
Author: johancodinha

by johancodinha

Enables AI agents to interact with running Clojure nREPL instances for code evaluation and inspection.

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Works in:VS Code Copilot

Exposes:ToolsResources

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What it does

The nREPL MCP Server bridges the Model Context Protocol with a running Clojure nREPL instance. This allows AI agents to execute Clojure code in real-time, inspect namespaces, and query the state of a running Clojure application directly.

Tools

evaluate: Executes arbitrary Clojure expressions in the current or specified namespace.
list_namespaces: Retrieves all namespaces available in the current project directory.
inspect_vars: Fetches metadata and current values for public vars within a namespace.
get_status: Returns the current connection status, including host and session ID.

Installation

Add the following to your claude_desktop_config.json:

{
  "mcpServers": {
    "nrepl-mcp-server": {
      "command": "npx",
      "args": ["nrepl-mcp-server"]
    }
  }
}

Supported hosts

Confirmed support for Claude Desktop and CLine (VS Code).

Quick install

npx nrepl-mcp-server

Information

Pricing: free
Published: 5/6/2026
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Related Apps

Choose your AI client and follow the steps below.

Claude Desktop

{
  "mcpServers": {
    "nrepl-mcp-server": {
      "command": "npx",
      "args": ["nrepl-mcp-server"]
    }
  }
}

VS Code Copilot

Use CLine MCP settings with the npx nrepl-mcp-server command