Backgrind is a high-performance desktop overlay application designed specifically for AI coding agents. It enables developers to keep their agents, such as Claude Code, Cursor, or the hosted Grindy model, running in an always-on-top window that floats over any other application, including IDEs, browsers, and even borderless fullscreen games. The tool serves as a lightweight frontend that renders terminal output and forwards user input, ensuring that the developer's existing login, history, and configuration remain entirely intact. By allowing agents to operate in the background and only notifying the user when human intervention is required, Backgrind effectively removes the need for constant terminal monitoring.

The application is built with a focus on developer flow and efficiency, particularly for those who prefer to offload repetitive tasks to AI. It features a unique 'glance mode' that makes the window transparent, allowing clicks and keyboard inputs to pass through directly to underlying applications. Users can manage multiple agents simultaneously in different tabs, each pinned to specific project folders, enabling a highly parallelized workflow. Privacy is a central tenet; Backgrind operates as a local-first client, ensuring that in bring-your-own-CLI mode, code and conversation history remain solely between the user and their chosen agent provider. The platform also includes comprehensive support for a 'vibe coding' workflow, where users provide high-level intent, and the agent handles the implementation details.

Some of the key features are:

• Always-on-top Overlay: Keeps your AI coding agent visible over any application or game for seamless multitasking.
• Glance Mode: Toggles window transparency to let inputs pass through to the underlying application while remaining visible.
• Agent Compatibility: Supports major CLI agents like Claude Code and Cursor, plus the hosted Grindy model.
• Notification System: Flashes and chimes only when the agent specifically requests input, approval, or completion.
• Multi-Agent Tabs: Allows running multiple agents side-by-side on different projects for better task parallelization.
• Secure Remote Access: Provides end-to-end encrypted Live mode to control coding sessions from phones or tablets.
• Privacy-First Design: Utilizes .grindignore files to ensure sensitive environment variables and keys never leave the machine.
• Vibe Coding Mode: Enables hands-off operation where agents focus on fulfilling intent without constant source-code intervention.

Backgrind is used by installing it on macOS or Windows and connecting your existing coding agent CLI. Once connected, you can define tasks within the overlay window, which then manages the execution and communicates progress in real-time. The interface includes file-tree visualizations, syntax highlighting for code previews, and rendered Markdown, effectively acting as a mini-IDE that floats above your workspace. For remote scenarios, users can initiate a secure pairing session from their desktop, allowing them to monitor terminal streams, approve actions, or issue follow-up commands from a mobile browser.

Some common use cases include:

• Coding While Gaming: Running agentic tasks in the background during game loading screens or downtime in titles like World of Warcraft or CS2.
• Managing Parallel Tasks: Handling multiple independent coding repositories simultaneously by pinning separate agents to specific project tabs.
• Remote Code Management: Approving critical deployment steps or terminal commands from a mobile device while away from the workstation.
• Reduced Context Switching: Keeping terminal-based agents visible above an editor or browser to maintain focus during long-running tasks.
• Streamlined Vibe Coding: Utilizing high-level intent descriptions to automate boilerplate and repetitive development tasks efficiently.