Callosium MCP Server: Install & Setup

Install Callosium in Claude Code

Claude Code

claude mcp add callosium -- npx -y callosium

mcp.json (Claude Desktop, Cursor, VS Code, Windsurf)

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

Frequently asked questions

What does the Callosium MCP server do?

One shared memory for every AI you use, in plain Markdown files you own.

Is the Callosium MCP server free?

Yes, most likely. Open source and no paid account or API key is mentioned in the listing. Check the provider for current pricing.

Does Callosium run locally or remotely?

Local. Runs on your machine (stdio). You install it with npx, uvx, Docker or from source.

How do I add Callosium to Claude Code?

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

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