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Argon

Argon is an MCP server that adds database tools to AI assistants such as Claude Desktop, Claude Code and Cursor. Versioned MongoDB sandboxes for AI agents: branch, time-travel, merge, and undo over MCP. It has 176 GitHub stars, is released under the MIT license and runs locally with npx -y argonctl.

github.com/argon-lab/argon (opens in a new tab)

Data as of from the GitHub API and the official MCP registry; description from the project's repository. Report an error

View on GitHub (opens in a new tab)

Install Argon

Generated from the server's MCP registry entry. Replace your-value with your own values.

Claude Desktop

claude_desktop_config.json
{
  "mcpServers": {
    "argon": {
      "command": "npx",
      "args": [
        "-y",
        "argonctl"
      ]
    }
  }
}

Settings > Developer > Edit Config. macOS: ~/Library/Application Support/Claude/, Windows: %APPDATA%\Claude\. Restart Claude Desktop afterwards.

Claude Code

claude mcp add --transport stdio argon -- npx -y argonctl

Cursor

.cursor/mcp.json
{
  "mcpServers": {
    "argon": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "argonctl"
      ]
    }
  }
}

Project file; use ~/.cursor/mcp.json to enable it in every project.

VS Code

.vscode/mcp.json
{
  "servers": {
    "argon": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "argonctl"
      ]
    }
  }
}

Config formats checked against the official docs on Oct 7, 2026: modelcontextprotocol.io (opens in a new tab), code.claude.com (opens in a new tab), cursor.com (opens in a new tab), code.visualstudio.com (opens in a new tab).

About Argon

Branch, time-travel, merge and undo your MongoDB. Any driver, real mongod, versioned history underneath. Built for AI agents.

  • ai-agents
  • branching
  • database
  • devtools
  • golang
  • llm
  • mcp
  • mongodb
  • time-travel
  • version-control

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FAQ

Argon FAQ

Still curious? Email info@appsgit.com.

How do I install the Argon MCP server?

Add the command npx -y argonctl to your MCP client: put it in claude_desktop_config.json for Claude Desktop, run claude mcp add for Claude Code, or add it to .cursor/mcp.json (Cursor) or .vscode/mcp.json (VS Code). The snippets on this page are ready to paste.

Is Argon free?

The server is open source under the MIT license, so running it is free. It does not declare any required API key.

Is Argon actively maintained?

The most recent commit was on Oct 19, 2026. The latest release is v2.1.3, published Oct 19, 2026. appsgit only lists MCP servers with a commit in the last six months.