AI product Open source

hwatu

hwatu is a Linux visual-verification browser and harness for AI coding agents, implemented as a WebKit daemon. It performs one-call page checks, returns pixel-difference scores and heat maps, exposes animation timing numerically, and runs headless windows that can be handed off to a live human-controlled window. It connects to coding agents through MCP, short CLI commands, or newline-delimited JSON over a Unix socket, and is designed for tiling window managers including Hyprland, sway, niri, and i3. The project distributes a static binary that uses the system's WebKitGTK 6.0 and can also be built from source with Cargo.

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What hwatu is used for

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  • A Linux verification browser for coding agents that provides measurable front-end evidence rather than screenshots. It returns pixel-difference scores and heat maps, exposes animation timing numerically, and supports handing a headless session to a live window.

Videos mentioning hwatu

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