Make sense of a page
Read information across pages, compare details, and bring the useful parts together.
An open-source browser agent
Your browser.
Your browser.
A helping hand.
Describe the task. OpenSidebar reads the page, clicks, types, and works across tabs from your Chrome side panel. Follow the progress and step in whenever you need.
See it in action
From a request
From a request
to work on the page.
Watch a short recorded tour of the extension. Then explore a task step by step, from the plan to the evidence behind the result.
Explore the interactive walkthrough →Recorded product tour · Edited for pacing and captions
Alongside you
Help with the work between tabs.
Work through the steps
Navigate, fill forms, and move information between tabs. Choose how often the agent asks before acting.
Look for the result
Follow the plan and review what happened. Pause, stop, or guide the agent when the task needs your judgment.
Choose your starting point
One project. Three ways in.
Start in Chrome for everyday browsing, try a task in the Playground, or connect a supervising tool.
The Chrome extension
Add OpenSidebar, connect your OpenRouter key, and open the side panel on a page you want help with.
Add to Chrome →The Playground
Try browser-agent tasks in the hosted environment. Sign in to see the available runs and account limits.
Open Playground →Connect with MCP
Let Codex review pages through a linked Chrome extension. Requires an approved account; the pilot supports reading and review.
Read the connection guide →Your key. Clear choices.
Use OpenRouter directly from Chrome or activate the optional account-backed relay. Signed-in tasks sync end-to-end encrypted traces by default; turn this off in Settings → Sync. Signed-out tasks stay local. Task context still goes to your configured model provider.
Read the privacy policy →
For builders
Open the hood.
Explore the agent runtime, browser tools, and verification system. The developer tour introduces the architecture; the repository has setup instructions and technical documentation.
Latest from Ideas · 8 October 2026
Jev: The New Judge in Town
Why a dedicated judge is a brilliant idea, and where it fits in OpenSidebar’s approach to verifying work.
Read the essay →