Cerebellum – Open-Source Browser Control with Claude 3.5 Computer Use
Hi HN! I was mesmerized by the Claude Computer Use reveal last week and was specifically impressed by how well it navigated websites. This motivated me to create Cerebellum, a library that lets an LLM take control of a browser. Here is a demo of Cerebellum in action, performing the goal “Find a USB C to C cable that is 10 feet long and add it to cart” on amazon.com: https://youtu.be/xaZbuaWtVkA?si=Tq9lE6BXv9wjZ-qC Currently, it uses Claude 3.5 Sonnet’s newly released computer use ability, but the ultimate goal is to crowdsource a high quality set of browser sessions to train…
Cerebellum – Open-Source Browser Control with Claude 3.5 Computer Use launched on October 31, 2024 with 42 votes, #695 of 5,185 launches that month and more than 90% of that year's launches. The site was still online in September 2026, 1 year on.
In plain words
Cerebellum is an open-source library that enables large language models to control and navigate web browsers autonomously. Built with Claude 3.5 Sonnet's computer use capabilities, it can perform tasks like searching for products and adding items to carts. The tool is available as an MIT-licensed repository and npm package. The creator aims to eventually train an open-source local model using crowdsourced browser session data, moving beyond reliance on Claude's API.
written from the facts on this page · September 2026
From the sources
Browser automation system that uses AI-driven planning to navigate web pages and perform goals. - theredsix/cerebellum
A lightweight browser using agent that accomplishes user-defined goals on webpages using keyboard and mouse actions. Contributions to Cerebellum are welcome. For details on how to get involved, please refer to our CONTRIBUTING.md . We appreciate all contributions, whether they're bug reports, feature requests, or code changes. Browser automation system that uses AI-driven planning to navigate web pages and performfrom github.com
In the maker’s words, at launch
Hi HN! I was mesmerized by the Claude Computer Use reveal last week and was specifically impressed by how well it navigated websites. This motivated me to create Cerebellum, a library that lets an LLM take control of a browser. Here is a demo of Cerebellum in action, performing the goal “Find a USB C to C cable that…
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Lightweight browser automation powered by Claude 3.5 Sonnet2024 · github.com · ▲10Hey HN! I'm excited to show off Cerebellum, a new open-source tool designed to automate browser tasks using large language models (LLMs). Cerebellum is an LLM-based AI agent that interacts with web sites using mouse and keyboard interactions, much like you would. So it works on web sites whether or not they have an API. The only requirement is that you use a Selenium-supported browser like Chrome, Firefox, or Safari. It’ll even work on Electron apps with a bit of setup! Furthermore, Cerebellum is open-source! We’d love both your feedback and contributions. The GitHub repo is here:…
I used Claude Code to discover connections between 100 booksJan 2026 · trails.pieterma.es · ▲524I think LLMs are overused to summarise and underused to help us read deeper. I built a system for Claude Code to browse 100 non-fiction books and find interesting connections between them. I started out with a pipeline in stages, chaining together LLM calls to build up a context of the library. I was mainly getting back the insight that I was baking into the prompts, and the results weren't particularly surprising. On a whim, I gave CC access to my debug CLI tools and found that it wiped the floor with that approach. It gave actually interesting results and required very little orchestration…
Claude in ChromeDec 2025 · claude.ai · ▲491Let Claude see, click, type, and navigate in your browser
Peek2024 · gopeek.ai · ▲404Hey HN, My cofounder and I have gotten tired of CC ignoring our markdown files so we spent 4 days and built a plugin that automatically steers CC based on our previous sessions. The problem is usually post plan-mode. What we've tried: Heavily use plan mode (works great) CLAUDE.md, AGENTS.md, MEMORY.md Local context folder (upkeep is a pain) Cursor rules (for Cursor) claude-mem (OSS) -> does session continuity, not steering We use fusion search to find your CC steering corrections. - user prompt embeddings + bm25 - correction embeddings + bm25 - time decay - target query embeddings -…
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