mcpbeat

Rubber Duck MCP Server

io.github.nesquikm/rubber-duck
local only

Rubber Duck runs on your own machine — the client starts it, so there is no endpoint to ping. 324 installs a week from npm. Last commit 27 Jul 2026.

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Installs per day peak 182 · avg 40 · -13% w/w
a month agotoday
324
Installs / week
npm · mcp-rubber-duck
173
Stars
28 open issues
27 Jul 2026
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 rubber-duck -- npx -y mcp-rubber-duck
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "rubber-duck": {
      "args": [
        "-y",
        "mcp-rubber-duck"
      ],
      "command": "npx"
    }
  }
}
~/.codex/config.toml
[mcp_servers.rubber-duck]
command = "npx"
args = ["-y", "mcp-rubber-duck"]
.cursor/mcp.json
{
  "mcpServers": {
    "rubber-duck": {
      "args": [
        "-y",
        "mcp-rubber-duck"
      ],
      "command": "npx"
    }
  }
}
.vscode/mcp.json
{
  "mcpServers": {
    "rubber-duck": {
      "args": [
        "-y",
        "mcp-rubber-duck"
      ],
      "command": "npx"
    }
  }
}

Rubber Duck — questions

Answers built from our own checks of this server.

Why is there no uptime for Rubber Duck?
Rubber Duck 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-rubber-duck was installed 324 times last week.
How do I connect Rubber Duck?
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-rubber-duck straight from npm; nothing to host, nothing to sign up for.
How many people use Rubber Duck?
The npm package mcp-rubber-duck was installed 324 times in the last week. Week over week that is -13%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.
Is Rubber Duck open source?
Yes — it is published under the MIT licence, written in TypeScript, 173 stars on GitHub and 28 open issues. The source link is on this page, so you can read exactly what it does with your data before you connect it.