Playwright MCP Server vs Postmancer

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

	Playwright MCP Server Microsoft's official browser-automation MCP using Playwright's accessibility tree (no vision model). Verified stdio (local) No auth TypeScript	Postmancer A standalone MCP server for API testing and management — let AI assistants call REST APIs in natural language. Unverified stdio (local) No auth Stale TypeScript
Category	Developer Tools	Developer Tools
Language	TypeScript	TypeScript
Transport	stdio (local)	stdio (local)
Auth	None	None
GitHub stars	24k	28
Last commit	2 months ago	1 year ago
Verified
Actively maintained
Install	`npx -y @playwright/mcp@latest`	`npm install -g postmancer`
Repo	Open	Open

Verdict

Pick Playwright MCP Server if you want the official, vendor-maintained server, and you prefer the more popular, battle-tested option.

Pick Postmancer if you prefer its approach (a standalone mcp server for api testing and management — let ai assistants call rest apis in natural language).

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"
      ]
    }
  }
}

Add Postmancer

Install / run

npm install -g postmancer

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

{
  "mcpServers": {
    "postmancer": {
      "command": "npx",
      "args": [
        "-y",
        "postmancer"
      ],
      "env": {
        "LOG_LEVEL": "info"
      }
    }
  }
}

FAQ

Playwright MCP Server or Postmancer — which is better?

Pick Playwright MCP Server if you want the official, vendor-maintained server, and you prefer the more popular, battle-tested option. Pick Postmancer if you prefer its approach (a standalone mcp server for api testing and management — let ai assistants call rest apis in natural language).

Can I use both Playwright MCP Server and Postmancer?

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 Playwright MCP Server and Postmancer work with Claude, Cursor and Windsurf?

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

View Playwright MCP Server →View Postmancer →More comparisons →