Cua Driver vs eSignatures.com MCP Server

A side-by-side comparison of two Productivity servers — tools, transport, auth, maintenance, and copy-paste config for each.

	Cua Driver Background computer-use MCP server that drives native macOS, Windows, and Linux desktop apps without stealing focus. Unverified stdio (local) No auth Rust	eSignatures.com MCP Server AI-friendly electronic signatures: create, edit, send, and manage Markdown-based contracts via the eSignatures.com API. Unverified stdio (local) API key Python
Category	Productivity	Productivity
Language	Rust	Python
Transport	stdio (local)	stdio (local)
Auth	None	API key
GitHub stars	19k	37
Last commit	1 month ago	1 month ago
Verified
Actively maintained
Install	`/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/trycua/cua/main/libs/cua-driver/scripts/install.sh)"`	—
Repo	Open	Open

Verdict

Pick Cua Driver if you prefer the more popular, battle-tested option, and you want zero-setup with no API key.

Pick eSignatures.com MCP Server if you prefer its approach (ai-friendly electronic signatures: create, edit, send, and manage markdown-based contracts via the esignatures.com api).

Add Cua Driver

Install / run

/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/trycua/cua/main/libs/cua-driver/scripts/install.sh)"

Paste into ~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "cua-driver": {
      "command": "cua-driver",
      "args": [
        "mcp"
      ]
    }
  }
}

Add eSignatures.com MCP Server

Paste into ~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "esignatures-com-mcp-server": {
      "command": "uvx",
      "args": [
        "mcp-server-esignatures"
      ],
      "env": {
        "ESIGNATURES_SECRET_TOKEN": "your-esignatures-api-secret-token"
      }
    }
  }
}

Requires `uv` (the Python package runner). Install it from https://docs.astral.sh/uv/ if `uvx` is not found.

FAQ

Cua Driver or eSignatures.com MCP Server — which is better?

Pick Cua Driver if you prefer the more popular, battle-tested option, and you want zero-setup with no API key. Pick eSignatures.com MCP Server if you prefer its approach (ai-friendly electronic signatures: create, edit, send, and manage markdown-based contracts via the esignatures.com api).

Can I use both Cua Driver and eSignatures.com MCP Server?

Yes — MCP clients let you enable multiple servers at once. Add both configs to your client's mcpServers and use whichever tool fits the task.

Do Cua Driver and eSignatures.com MCP Server work with Claude, Cursor and Windsurf?

Both do. Copy the per-client config below into Claude Desktop, Cursor, or Windsurf.

View Cua Driver →View eSignatures.com MCP Server →More comparisons →