Jacobian

local MCP server

Jacobian is a local MCP server: Executable mathematics and independent verification for AI agents. Install it from npm as jacobian.

Installation

Terminal

claude mcp add jacobian -- npx -y jacobian

Run in your project folder. Add --scope user to use it everywhere.

Add to claude_desktop_config.json or .cursor/mcp.json.

{
  "mcpServers": {
    "jacobian": {
      "command": "npx",
      "args": [
        "-y",
        "jacobian"
      ]
    }
  }
}

Runtime: Node.js 18+ (runs with npx).
MCP client: Claude Code, Codex, Antigravity, Claude Desktop, Cursor or any other client that speaks MCP over stdio.

Executable mathematics and independent verification for AI agents.

Server	Stars	Type	API key	Runtime
Jacobian	194	Local	No	npm
Nautilus Compass Memory	622	Hosted	Yes	None
mcp-server	551	Local	Yes	npm
Entroly	470	Local	Yes	pypi
mcp	229	Local	Yes	npm

No. The registry entry lists no keys or environment variables.

Node.js 18+ (runs with npx), plus an MCP client such as Claude Code, Codex, Claude Desktop or Cursor.

Jacobian is a local MCP server distributed as the npm package jacobian.

Run: claude mcp add jacobian -- npx -y jacobian

Run: codex mcp add jacobian -- npx -y jacobian

NameStars