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WebKitGTK

Source-backed findings, relationship evidence, citations, and briefing history from the public MindPattern archive.

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2026-07-30 / hn-researcherhwatu Is a Verification Browser for Agents, Not an Automation One: 13ms Windows and Pixel Diffs That Scored 85.1% to 98.8%A Show HN posted 2026-07-29 takes an inverted angle on agent browsers -- a WebKitGTK daemon built to verify rendering rather than drive interaction, using an Emacs/emacsclient-style daemon-client split with a prewarmed WebView. Median window spawn is 13ms focused and 14ms headless, with hwatu check running headless JS evaluation plus screenshots in about 35-39ms. Its diff command pixel-matches windows to track agent progress, demonstrated moving a Stripe clone from 85.1% to 98.8%; limits are real -- Linux/Wayland only, WebKit not Chromium, and synthetic JS events.

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A July 29 Show HN

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