What is bernstein?
bernstein is a MCP server by sipyourdrink-ltd that deterministic orchestrator for CLI coding agents such as Claude Code, Codex and Aider, with per-agent git worktrees, an audit trail and cost-aware routing. It is listed under Developer tools and has 1,290 GitHub stars.
| Type | Mcp server |
|---|---|
| Author | sipyourdrink-ltd |
| Repository | sipyourdrink-ltd/bernstein |
| Popularity | 1,290 GitHub stars |
| Category | Developer tools |
| Security | Review before installing (72/100) |
| Rank | #162 of 4,418 MCP servers; #66 in Developer tools |
| License | Apache-2.0 |
| Last commit | 2026-10-17 |
| Stars this week | +73 |
| Runs | Locally and in the cloud |
| Language | Python |
| Platforms | macOS, Windows, Linux |
Is bernstein safe to install?
bernstein 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 bernstein?
- 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/sipyourdrink-ltd/bernstein
- 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 bernstein -- <command from README> claude mcp add --transport http bernstein <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 bernstein for you:
Add the "bernstein" MCP server from https://github.com/sipyourdrink-ltd/bernstein 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.