Knowledge has no limits.
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mdv-second-brain An AI skill for Claude Code and Codex, installed as a plugin, that keeps an Obsidian-compatible second brain for each workspace while you work: a Kanban board, living task and issue notes, daily checkpoints, distilled project knowledge and ideas. Claude keeps it current without being asked, workspaces never mix, and it does nothing until you run /brain init. |
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mdv-linux-kernel An AI skill for Claude Code and Codex that mentors people sending their first Linux kernel patches, with netdev in depth. It does not hide AI use: it asks for evidence tied to the exact code and follows each tree's own rules. Before anything goes out, it checks the patch for the signs of AI slop that maintainers look for (a vague changelog, a wrong Fixes: tag, needless churn), then asks you questions about it, so you only send what you understand. You sign off and send it yourself. |
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GyozaRec Fast, cute screen capture for Windows 10 and 11: a rectangle, a window or the full screen to PNG, JPG, MP4 or animated GIF. MP4s with system audio, recordings you can pause, an editor to mark up images, global shortcuts, 9 languages, installer or portable. Entirely local: no uploads, no accounts. |
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MDV Tools Web tools that each do one job. Nothing leaves your device: no requests once a page has loaded, no account, works offline. |
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The Scholar Cat RPG A small retro action-RPG: pixel-art characters in a low-poly world. Folio, the library cat, takes up a quill in four chapters: a village where ink creatures crawl out of a torn codex, a silent ship in deep space, a mining town of the old West, Longmen by the Dragon Gate on the night its lanterns go out. Between them, a card tourney against the people met along the way. Keyboard, gamepad or touch; in English and Italian. |
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The Scholar Cat Cabinet 22+ one-button arcade games with the same cat in each. Space or tap is the only control. |
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Borghi in diorama 30+ pixel-art villages to walk around. No 3D models: every sprite pixel is extruded into depth. In Italian. |
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Marble Loop A marble bounces down xylophone keys set in a white wall and plays Mozart, Offenbach and Rossini, in a 45-second loop that never ends. Tap for sound. |








