What is mcp-rubber-duck?
mcp-rubber-duck is a MCP server by nesquikm that bridge to multiple OpenAI-compatible LLMs for rubber duck debugging: explain a problem to several AI ducks and get different perspectives. It is listed under Developer tools and has 180 GitHub stars.
| Type | Mcp server |
|---|---|
| Author | nesquikm |
| Repository | nesquikm/mcp-rubber-duck |
| Popularity | 180 GitHub stars |
| Category | Developer tools |
| Security | Review before installing (72/100) |
| Rank | #436 of 4,418 MCP servers; #126 in Developer tools |
| License | MIT |
| Last commit | 2026-10-13 |
| Stars this week | +2 |
| Runs | Locally and in the cloud |
| Language | TypeScript |
Is mcp-rubber-duck safe to install?
mcp-rubber-duck scores 72/100 on the MCPMods security check: Review before installing. Things to review: sends your data to a cloud service; executes code or shell commands. It passed 3 of 6 checks.
MCP server results come from listing signals: who publishes it, where your data goes and what it can do. The code itself is not scanned yet.
| Check | Result |
|---|---|
| Community-built server | Note |
| Sends your data to a cloud service | Review |
| No credentials mentioned | Pass |
| Read-only by description | Pass |
| Executes code or shell commands | Review |
| Source on GitHub | Pass |
How do I install mcp-rubber-duck?
- Find the launch command. The README says how the server starts (npx, uvx, docker or a remote URL) and which API keys it needs.
https://github.com/nesquikm/mcp-rubber-duck
- Add it to Claude Code. Replace the part after -- with the command from the README. Remote servers use --transport http with a URL.
claude mcp add mcp-rubber-duck -- <command from README> claude mcp add --transport http mcp-rubber-duck <server-url>
- Check it connected. This lists your MCP servers and their status.
claude mcp list
Or ask Claude to set it up
Paste this into Claude Code and it installs mcp-rubber-duck for you:
Add the "mcp-rubber-duck" MCP server from https://github.com/nesquikm/mcp-rubber-duck to Claude Code. Read its README for the launch command and any API keys I need, run claude mcp add, then check that it connects.