MCP: Implement automated web testing

In modern Web development, automated testing has become a critical step in ensuring application quality and accelerating iteration cycles. With its cross-browser support, powerful automation capabilities, and various APIs, Playwright has become an ideal choice for end-to-end automated web testing.

This tutorial details how to efficiently integrate Playwright MCP Server in Trae IDE to build an automated testing solution, helping you validate webpage interaction logic more efficiently, reduce manual testing efforts, and improve overall development productivity.

Demonstration

The following GIFs demonstrate some automated webpage testing practices using Trae IDE:

Open a webpage: In this example, Trae IDE automatically opens the https://docs.trae.ai/ide/model-context-protocol page.
Open a webpage and click the hyperlink on the page: In this example, Trae IDE automatically opens the https://docs.trae.ai/ide/model-context-protocol page and clicks on the hyperlinked text "MCP's official documentation".

System environment

The system environment used in this tutorial is as follows:

Trae IDE version: 1.3.5
macOS version: 14.7
Node.js version: 20.19.1
npx version: 10.9.2
Python version: 3.13.3
uvx version: 0.6.16

Procedure

Follow the procedure below to integrate MCP server - Playwright into your project, create an agent, and then conduct automated web testing with Trae IDE.

Step 1: Install Trae IDE

Trae IDE is deeply integrated with AI, offering AI Q&A, code auto-completion, and AI-powered programming capabilities driven by agents. When developing projects with Trae IDE, you can collaborate flexibly with AI to enhance development efficiency.

Go to Trae's official website to download the installation package for Trae IDE, and then install it on your computer.

Step 2: Configure the runtime environment for MCP servers

To ensure that MCP servers can start up normally, you need to install the following dependencies:

npx: a tool included in Node.js (the version must be 18 or later)
uvx: a command-line tool for quickly running Python scripts

First, to facilitate installing dependencies via command lines later, let's open the terminal in Trae IDE. Steps are as follows:

Launch Trae IDE.
In the top menu bar, click Terminal > New Terminal.
The Terminal panel appears at the bottom of the interface.

Install uvx

After opening the terminal, use the following steps to install uvx:

Go to Python's official website, download and install Python 3.8 or later.
After the installation is complete, run the following command in the terminal to confirm whether the installation was successful:
bash
```
python3 --version
```
If the installation is successful, the terminal will output the installed version number of Python.
Run the following command to install uv (including uvx):
Installation command for macOS / Linux:
bash
```
curl -LsSf https://astral.sh/uv/install.sh | sh
```
Installation command for Windows (PowerShell):
powershell
```
powershell -ExecutionPolicy ByPass -c "irm https://astral.sh/uv/install.ps1 | iex"
```
Run the source $HOME/.local/bin/env command to load the runtime environment variables and initialization settings required for uvx.
Run the following command to verify whether the installation was successful:
bash
```
uvx --version
```
If the installation is successful, the terminal will output the installed version number of uvx.

Install Node.js

After uvx installation is complete, follow the steps below to install Node.js:

Go to Node.js official website to download and install Node.js version 18 or later.
After the installation is complete, run the following command in the terminal to confirm whether the installation was successful:
bash
```
node -v
npx -v
```
If the installation is successful, the terminal will output the installed Node.js version number, for example:
```
v18.19.0
10.2.0
```
Restart Trae IDE to activate Node.js.

Step 3: Install Playwright

To use Playwright for automated web testing with Trae IDE, you need to first install Playwright on your local computer. The steps are as follows:

Run the pip3 install playwright command to install the Python client library for Playwright, enabling the use of the playwright module in Python code. After the installation begins, the terminal will display the following content:

bash

xxxxxxxxxxx ~ % pip3 install playwright
Collecting playwright
  Obtaining dependency information for playwright from https://files.pythonhosted.org/packages/32/4a/5f2ff6866bdf88e86147930b0be86b227f3691f4eb01daad5198302a8cbe/playwright-1.51.0-py3-none-macosx_11_0_arm64.whl.metadata
  Downloading playwright-1.51.0-py3-none-macosx_11_0_arm64.whl.metadata (3.5 kB)
Collecting pyee<13,>=12 (from playwright)
  Obtaining dependency information for pyee<13,>=12 from https://files.pythonhosted.org/packages/25/68/7e150cba9eeffdeb3c5cecdb6896d70c8edd46ce41c0491e12fb2b2256ff/pyee-12.1.1-py3-none-any.whl.metadata
  Downloading pyee-12.1.1-py3-none-any.whl.metadata (2.9 kB)
  ...

Run the python3 -m playwright install command to install the browser binaries required by Playwright.

MCP: Implement automated web testing ​

Demonstration ​

System environment ​

Procedure ​

Step 1: Install Trae IDE ​

Step 2: Configure the runtime environment for MCP servers ​

Install uvx ​

Install Node.js ​

Step 3: Install Playwright ​

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