SideButton

SideButton connects AI agents to your browser. It's an open-source MCP server + Chrome extension that gives Claude Code, Cursor, ChatGPT, and any MCP-compatible AI tool real browser control through your existing sessions. WHAT IT DOES SideButton gives AI agents eyes and hands in your browser: - Navigate to any URL and interact with pages - Click, type, scroll, and fill forms - Extract text, data, and page structure - Take screenshots and accessibility snapshots - Run multi-step workflows with YAML automation - Inject domain knowledge so agents understand your apps Everything runs locally — no cloud proxies, no headless browsers, no credentials shared with third parties. KNOWLEDGE PACKS SideButton's unique advantage: domain knowledge packs that teach AI agents how specific web apps work — selectors, data models, states, and workflows. Install a pack, and your AI agent instantly understands the app. - Browse knowledge packs at sidebutton.com/skills - Create your own with `sidebutton init` - Share packs via git registries HOW IT WORKS 1. Install the extension 2. Run the server: npx sidebutton 3. The extension auto-connects to the local server 4. Connect your AI agent via MCP (Claude Code, Cursor, Claude Desktop) 5. Your AI agent can now see and control your browser WORKFLOW AUTOMATION Automate multi-step browser tasks with simple YAML definitions: - Browser automation — navigate, click, type, extract data - LLM integration — classify content, generate text, make decisions - Shell commands — run terminal commands as part of workflows - Conditional logic — if/else branching, retry with backoff - Nested workflows — compose complex automations from simple blocks - Embedded buttons — inject action buttons directly into web pages PRIVACY & SECURITY - 100% local — the server runs on your machine, not in the cloud - No data collection — your browsing data stays on your device - No credentials stored — workflows use your existing browser sessions - Open source — full source code on GitHub (Apache-2.0 license) LINKS - Documentation: https://docs.sidebutton.com - GitHub: https://github.com/sidebutton/sidebutton - Website: https://sidebutton.com - Knowledge Packs: https://sidebutton.com/skills