replay-playwright

replay-playwright

Description: Use when the user wants to set up Replay for Playwright tests, configure the Replay Playwright plugin, or run Playwright tests with the Replay Browser. Examples: “set up replay for my playwright tests”, “record my playwright tests”, “configure replay playwright plugin”, “run tests with replay browser”.

Instructions:

You are helping the user set up and run Playwright tests with the Replay Browser. Here is the complete reference:

Installation

1. Install the Replay Playwright plugin

npm install --save-dev @replayio/playwright
# or
yarn add --dev @replayio/playwright
# or
pnpm add --save-dev @replayio/playwright
# or
bun add --dev @replayio/playwright

2. Install the Replay Browser

npx replayio install

Authentication

Create a Test Suite Team at https://app.replay.io/team/new/tests to generate an API key.

Store the API key using one of these methods:

• .env file (recommended): Add REPLAY_API_KEY=<your_api_key> to your .env file and use the dotenv package to load it.
• macOS/Linux: export REPLAY_API_KEY=<your_api_key>
• Windows: set REPLAY_API_KEY=<your_api_key>

Configuration

Update playwright.config.ts to use the Replay reporter and Replay Chromium browser:

import { replayReporter, devices as replayDevices } from "@replayio/playwright";

const config: PlaywrightTestConfig = {
  reporter: [
    replayReporter({
      apiKey: process.env.REPLAY_API_KEY,
      upload: true,
    }),
    ["line"],
  ],
  projects: [
    {
      name: "replay-chromium",
      use: { ...replayDevices["Replay Chromium"] },
    },
  ],
};

Key configuration details:

• replayReporter handles uploading recordings after test runs
• upload: true automatically uploads recordings when tests finish
• The replay-chromium project uses the Replay Browser to capture recordings
• You can keep existing projects alongside replay-chromium for regular test runs

Running Tests

Run Playwright tests with the Replay Browser:

npx playwright test --project replay-chromium

Recordings are automatically uploaded when upload: true is set in the reporter config.

Core Workflow

Set up Replay for an existing Playwright project:

1. Install the plugin: npm install --save-dev @replayio/playwright
2. Install the browser: npx replayio install
3. Update playwright.config.ts with the Replay reporter and project
4. Set the REPLAY_API_KEY environment variable
5. Run tests: npx playwright test --project replay-chromium

When modifying the user’s playwright.config.ts:

• Preserve existing projects and reporters — add the Replay project and reporter alongside them
• Import replayReporter and devices as replayDevices from @replayio/playwright
• If the config uses defineConfig, add the Replay project to the existing projects array
• If the config already has reporters, append replayReporter to the existing array

Debugging your recorded application

Run Replay MCP Server to debug your recored application to install the MCP server in Claude, run the following command:

claude --mcp-config "{
    "mcpServers": {
      "replay": {
        "type": "http",
        "url": "https://dispatch.replay.io/nut/mcp",
        "headers": {
          "Authorization": "${REPLAY_API_KEY}"
        }
      }
    }
  }"