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Image: u/cOlz23 on Reddit · A split keyboard’s live keymap shown under the words on Monkeytype

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Your Vial keyboard's live keymap shown on Monkeytype

The maker had Claude build a Chrome extension that reads a split keyboard's real keymap from Vial or VIA and shows it under the words on monkeytype.com, layers included.

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Credits

  • Reddit poster cOlz23 Source ↗
  • Repository account GordonMohrin Source ↗

Earliest dated source: 8 Nov 2026

Code ↗

The full story

Split Keyboard for monkeytype is a Chrome extension that shows your own keyboard under the words on monkeytype.com while you type. It reads the real keymap from a keyboard running Vial, or VIA with a layout file, without changing its firmware, and shows every key press and layer switch live, outlines the next key with any layer or Shift key it needs, and draws hands showing which finger to use.

The maker had Claude build it, taking the idea from another user's post in r/ErgoMechKeyboards. It is aimed at split keyboards such as the Kyria, Corne, Lily58, Elora, Ferris and Sofle, and has been tested on an Elora and a Corne.

It works in Chrome, Edge, Brave and Arc, which can talk to USB keyboards through WebHID; Firefox and Safari can't. It isn't in the Chrome Web Store yet, so it is installed unpacked from the latest release.

How it was done

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Sources

From a short post by the maker, so the details are as they tell them.

  • Reddit: Chrome extension that shows your Vial keyboard live on monkeytype with your layersForum threadreddit.com
    Reddit poster: cOlz23Posted 8 Nov 2026

    The maker's post in r/ErgoMechKeyboards introducing the extension.

  • The code: github.comCode or repositorygithub.com
    Repository account: GordonMohrin

    The extension's repository, with install steps and how Vial unlocking works.

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Prompt & Solder

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What this is. Real projects where people used Claude to build, fix, port, revive or take apart something, from jailbroken Kindles to rebuilt DOS games, plus the times it went badly wrong. Every build links to where it was shared, and every source is listed here.

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