A browser work environment for agents

Let your agent act, investigate, and verify

Connect page actions, requests, logs, and environment emulation so your agent can complete tasks and check the results. Turn proven workflows into reusable Skills.

Install Mearl Introduction

Choose the browser for your task. Connect through the extension, CDP, or an environment Provider.

Let your agent export the weekly report

Illustrative workflow · not a live run

01Act02Inspect03Verify04Reuse

Export last week’s report, check its dates and columns, and save the workflow as a Skill.

Reports

Weekly reportLast week · CSV

weekly-report.csv

Last week selected

PAGE ACTION

Start with an everyday task

Open the reports page, select last week, and start the export.

Open reports
→ Select last week
→ Export CSV

Use the selected browser’s sign-in

Reports

Weekly reportLast week · CSV

weekly-report.csv

Report ready

REQUEST + RESPONSE

Check what the page requested

Inspect the request and response to confirm that the export uses the selected dates.

GET /api/reports      200
range: last_week
format: csv

The request matches the selected date range

Reports

Weekly reportLast week · CSV

weekly-report.csv

Download checked

DOWNLOAD + VERIFICATION

Verify the file you received

Save the CSV and check its dates and columns before reporting completion.

weekly-report.csv
✓ Dates match last week
✓ Expected columns present

A saved file with its contents checked

Reports

Weekly reportLast week · CSV

weekly-report/SKILL.md

Workflow saved

REUSABLE SKILL

Make next week easier

Package the export and validation steps as a Skill with a date range input.

weekly-report/
  SKILL.md
  scripts/export.mjs

Run the Skill next time with a new date range

Open source · Apache-2.0Page automation

Overview

What you can do with Mearl

Connect browsers and devices
Use the extension with everyday Chrome, CDP with a browser or Electron app, or a Provider with an external environment. Cloud requests can reach the browser host through a Connector.
Connections & sessions EgoLite
Operate web pages
Ask your agent to read pages, fill forms, transfer files, or take screenshots. Run the same browser actions from the CLI, TypeScript SDK, or MCP.
Page automation CLI & TypeScript SDK MCP
Call APIs with your browser sign-in
Reuse a signed-in browser session to call a known HTTP endpoint, replay a request, or retrieve data for a report.
Authenticated requests
Debug pages and verify layouts
Inspect requests, console logs, and tracking events. Mock responses to retest behavior, or overlay a design to compare pixels.
Web debugging Design Overlay
Test apps and mini-programs
Emulate a device, timezone, or App WebView to check JSBridge and container behavior. Run and debug local WeChat mini-programs.
App emulation guide Local WeChat mini-programs
Reuse tools and workflows
Install existing Skills and bb-browser adapters, or turn a proven workflow into a Skill you can run again from an agent, the CLI, or the Toolbox.
Turn a workflow into a Skill bb-browser

Device & App emulation

Bring the App environmentto your browser

Install an App profile to check how your web page behaves inside its host app, from page layout to native interactions.

App identitySet the User-Agent and environment signals that select the page’s App-specific behavior.
JSBridge callsSimulate the native methods and responses supported by the profile.
Container behaviorCheck navigation and WebView behavior with device and timezone emulation.

App emulation guide

Example · WeChat mini-program WebView