mcpbeat

Jacobian MCP Server

io.github.morluto/jacobian
local only

Jacobian runs on your own machine — the client starts it, so there is no endpoint to ping. 780 installs a week from npm. Last commit 4 Aug 2026.

Executable mathematics and independent verification for AI agents.

Installs per day peak 299 · avg 29 · +561% w/w
a month agotoday
780
Installs / week
npm · jacobian
14
Stars
14 open issues
4 Aug 2026
Last commit
0 releases in 90 days
MIT
License
Python

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 jacobian -- npx -y jacobian
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "jacobian": {
      "args": [
        "-y",
        "jacobian"
      ],
      "command": "npx"
    }
  }
}
~/.codex/config.toml
[mcp_servers.jacobian]
command = "npx"
args = ["-y", "jacobian"]
.cursor/mcp.json
{
  "mcpServers": {
    "jacobian": {
      "args": [
        "-y",
        "jacobian"
      ],
      "command": "npx"
    }
  }
}
.vscode/mcp.json
{
  "mcpServers": {
    "jacobian": {
      "args": [
        "-y",
        "jacobian"
      ],
      "command": "npx"
    }
  }
}

Jacobian — questions

Answers built from our own checks of this server.

Why is there no uptime for Jacobian?
Jacobian 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 jacobian was installed 780 times last week.
How do I connect Jacobian?
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 jacobian straight from npm; nothing to host, nothing to sign up for.
How many people use Jacobian?
The npm package jacobian was installed 780 times in the last week. Week over week that is +561%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.
Is Jacobian open source?
Yes — it is published under the MIT licence, written in Python, 14 stars on GitHub and 14 open issues. The source link is on this page, so you can read exactly what it does with your data before you connect it.