Chat prose read looser than the rest of the app: 15px body with a single
line-height for everything, headings barely larger than the text, list
bullets drawn as dashes with a 2em gutter, no vertical rhythm for lists or
quotes, and inline code that took a syntax colour from the theme.
Body text is 14px with a whole-pixel line height (22.75px rounded to 23px
so baselines stay on the pixel grid). Every block carries the same 0.65rem
margin on both sides, so any two neighbours are one spacing apart and the
outer blocks add nothing. Headings step 20/18/16/14px at weight 600 with
more air above than below. Lists use native markers that cycle by depth
with a 1.25rem gutter and 0.25rem between items; task-list checkboxes
replace the marker. Blockquotes get their left rule back. Headings, list
markers and inline code render in the text colour; inline code is a muted
chip one step smaller than the prose. The inlineCode theme tokens are
removed from the built-in themes, the generator and the VS Code adapter;
custom themes that still carry them are simply ignored.
The remaining semantic sizes shrink by the same step (code 12px, labels and
meta 13px, settings title 17px), in VS Code proportionally.
Text selection in chat used the browser default in dark themes while the
comment overlay painted the theme's row-selection token, so the colour
changed the moment Comment was clicked; that token is also nearly the page
background in several light themes and opaque in monokai, where the overlay
hid the text. Native selection, file-preview selection and the overlay now
share one translucent accent tint (primary at 30%), which stays visible over
every built-in theme's background.
Testing: ui type-check and lint; all theme JSON re-parsed; screenshots of
prose, lists and the selection/comment states in headless Chrome; contrast
of the new selection tint computed against every theme's background and
text.
OpenChamber is an open-source workspace for running and reviewing AI coding work on desktop, web, VS Code, and mobile.
Start agent work, see what changed, and take it through review and release. Your projects and sessions remain available when you switch devices or step away.
More screenshots
What you can do with OpenChamber
Goals that continue on their own
Give a session a finish line with Session Goals. OpenChamber checks the result after every turn and keeps the agent working until it completes the goal, gets blocked, or reaches the limit you set. It can continue after you close the app.
Compare and combine runs
Use Multi-run to give the same task to up to five models, each in its own session and optionally its own worktree. See what each one actually built, choose the best result, or use Fusion to combine the strongest parts into a new session.
Guided changes walkthroughs
Changes Walkthrough turns a large diff into an AI-guided tour of the change. It groups related edits into steps, puts them in the order the change makes sense, and explains how the pieces fit together.
Inspect a running app
Open your app beside the conversation with Preview. Point at an element to send the agent its screenshot, styles, position, and browser errors. No more trying to explain "this thing here." The desktop app can do the same with any web page in its built-in browser.
GitHub context from issue to pull request
Start a session from a GitHub issue or pull request with its context attached. Send failed checks or review comments back to the agent, then update or merge the pull request from OpenChamber.
Continue on another device
Open the same projects and sessions from Desktop, Web/PWA, VS Code, iOS, or Android. Check progress, answer questions, review changes, and reattach to a running terminal.
Private remote access
Pair a device with a one-time QR code and connect through Private Relay without opening ports or exposing a public server. The connection is end-to-end encrypted and can be revoked at any time. Direct connections, LAN/VPN access, Cloudflare/Ngrok tunnels, and SSH are also supported.
Track work across projects
See which sessions are working, waiting, finished, or failed, along with approvals, scheduled tasks, provider limits, token use, and costs. Organize sessions into folders and keep notes, todos, and reusable project actions nearby.
Schedule recurring work
Run a prompt once, daily, weekly, or on a cron schedule. Scheduled tasks can use Session Goals, so they continue toward an outcome instead of stopping after one response.
Use it where you work
Surface
Role
Desktop
The complete workspace for macOS, Windows, and Linux, with multiple windows, Mini Chat, remote machines, SSH, and native notifications
Web / PWA
Open your workspace in a browser, install it as an app, and stay up to date through background notifications
VS Code
Keep sessions beside your code, send selections to the agent, open results in the editor, and compare parallel runs
iOS / Android
Review and steer work away from your desk, receive completion alerts, and use the terminal with touch controls
CLI / Server
Run OpenChamber on a workstation or server, schedule work, manage remote access, and keep it available after login
Quick start
Desktop for macOS, Windows, and Linux
Download the latest release from GitHub Releases. Desktop bundles the matching OpenCode CLI, so no separate OpenCode installation is required.
Linux releases are available as x86_64 and ARM64 AppImages. Make the downloaded AppImage executable and keep it in a writable location for in-app updates:
OpenChamber uses OpenCode to run coding agents. We chose it because it is open source, has a solid API, and is easy to extend.
OpenChamber handles the rest of the workflow. You can decide what to try, keep the agent on track, review the result, connect from another device, and ship the change.
OpenChamber is an independent project and is not affiliated with the OpenCode team.
Contributing
See CONTRIBUTING.md for development setup and contribution guidelines. Documentation authoring guidance lives in packages/docs.
Acknowledgments
Special thanks to:
OpenCode for the API and open-source architecture OpenChamber builds on
Pierre for the diff viewer and syntax highlighting
The T3 Code team for their browser adapter for libghostty-vt, which our terminal is built on
Yulia Ivashko, who built the firework celebration that plays on every successful push
Everyone who contributed code, reported bugs, or shared ideas
Bohdan Triapitsyn
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