OpenZeppelin Contracts MCP Server vs Playwright MCP Server

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

	OpenZeppelin Contracts MCP Server Let AI agents generate audited smart contracts using OpenZeppelin Contracts libraries. Unverified stdio (local) No auth TypeScript	Playwright MCP Server Microsoft's official browser-automation MCP using Playwright's accessibility tree (no vision model). Verified stdio (local) No auth TypeScript
Category	Developer Tools	Developer Tools
Language	TypeScript	TypeScript
Transport	stdio (local)	stdio (local)
Auth	None	None
GitHub stars	292	24k
Last commit	1 day ago	13 days ago
Verified
Actively maintained
Install	`claude mcp add OpenZeppelinContracts -- npx -y @openzeppelin/contracts-mcp`	`npx -y @playwright/mcp@latest`
Repo	Open	Open

Verdict

Pick OpenZeppelin Contracts MCP Server if you need the broadest set of tools.

Pick Playwright MCP Server if you prefer the more popular, battle-tested option, and you want a verified, documented setup.

Add OpenZeppelin Contracts MCP Server

Install / run

claude mcp add OpenZeppelinContracts -- npx -y @openzeppelin/contracts-mcp

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

{
  "mcpServers": {
    "openzeppelin-contracts-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "@openzeppelin/contracts-mcp"
      ]
    }
  }
}

Add Playwright MCP Server

Install / run

npx -y @playwright/mcp@latest

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

{
  "mcpServers": {
    "playwright-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "@playwright/mcp@latest"
      ]
    }
  }
}

FAQ

OpenZeppelin Contracts MCP Server or Playwright MCP Server — which is better?

Pick OpenZeppelin Contracts MCP Server if you need the broadest set of tools. Pick Playwright MCP Server if you prefer the more popular, battle-tested option, and you want a verified, documented setup.

Can I use both OpenZeppelin Contracts MCP Server and Playwright 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 OpenZeppelin Contracts MCP Server and Playwright MCP Server work with Claude, Cursor and Windsurf?

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

View OpenZeppelin Contracts MCP Server →View Playwright MCP Server →More comparisons →