mcpbeat

Code Runner MCP Server

io.github.formulahendry/code-runner
local only

Code Runner runs on your own machine — the client starts it, so there is no endpoint to ping. 525 installs a week from npm. Last commit 22 Sep 2025.

Code Runner MCP Server which can run code in various programming languages.

Installs per day peak 567 · avg 88 · -26% w/w
a month agotoday
525
Installs / week
npm · mcp-server-code-runner
242
Stars
8 open issues
22 Sep 2025
Last commit
0 releases in 90 days
MIT
License
TypeScript

Connect this server

This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.

run in your terminal
claude mcp add code-runner -- npx -y mcp-server-code-runner
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "code-runner": {
      "args": [
        "-y",
        "mcp-server-code-runner"
      ],
      "command": "npx"
    }
  }
}
~/.codex/config.toml
[mcp_servers.code-runner]
command = "npx"
args = ["-y", "mcp-server-code-runner"]
.cursor/mcp.json
{
  "mcpServers": {
    "code-runner": {
      "args": [
        "-y",
        "mcp-server-code-runner"
      ],
      "command": "npx"
    }
  }
}
.vscode/mcp.json
{
  "mcpServers": {
    "code-runner": {
      "args": [
        "-y",
        "mcp-server-code-runner"
      ],
      "command": "npx"
    }
  }
}

Code Runner — questions

Answers built from our own checks of this server.

Why is there no uptime for Code Runner?
Code Runner runs on your own machine over stdio — there is no network address to reach, so uptime cannot be measured for it by anyone. What can be measured is adoption: the npm package mcp-server-code-runner was installed 525 times last week.
How do I connect Code Runner?
Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It runs locally, so the command pulls mcp-server-code-runner straight from npm; nothing to host, nothing to sign up for.
How many people use Code Runner?
The npm package mcp-server-code-runner was installed 525 times in the last week. Week over week that is -26%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.
Is Code Runner open source?
Yes — it is published under the MIT licence, written in TypeScript, 242 stars on GitHub and 8 open issues. The source link is on this page, so you can read exactly what it does with your data before you connect it.