Browser Harness

Browser Harness

3.0

A thin, self-healing harness for browser agents built directly on CDP, enabling agents to edit their own helpers mid-task to complete any browser task.

Last Updated Oct 19, 2026
Browser Harness screenshot

About

Browser Harness is a lightweight, self-healing harness designed specifically for browser agents, built directly on the Chrome DevTools Protocol (CDP). Its primary goal is to empower browser agents with greater autonomy and flexibility, enabling them to handle complex web interaction scenarios with ease.

Key Features

**Direct CDP Integration: ** Leverages the Chrome DevTools Protocol for stable and efficient browser control, without additional dependencies.
**Self-Healing Helpers: ** Agents can dynamically edit and optimize their own helper functions during task execution, adapting to page changes or new challenges.
**Mid-Task Editing: ** Allows agents to adjust strategies on the fly, without interrupting or restarting, thereby improving task completion rates.
**Lightweight Design: ** The tool consumes minimal resources and is easy to integrate into existing agent workflows.

Who It's For

This tool is ideal for developers and researchers, particularly those building or maintaining browser automation agents, web scrapers, automated testing tools, or exploring AI agents for the web. Whether you aim to improve the stability of existing agents or push the boundaries of browser automation, Browser Harness is a compelling option to consider.