We're finishing the Chrome Web Store review. In the meantime, install Nithic manually in four quick steps — every detection, every feature, fully working. The moment we ship to the Store, you'll auto-update.
Save the .zip and double-click to unzip. You'll get a folder named nithic-extension-v2.0.99. Drag it somewhere stable — Desktop or Documents — because Chrome will reload it from this exact path.
chrome://extensions.Paste the URL into your address bar — Chrome blocks regular pages from linking there.
Edge users: edge://extensions · Brave: brave://extensions · Arc inherits Chrome's path.
Top-right of the extensions page. Flip the switch — this lets Chrome run extensions you didn't get from the Web Store.
Click Load unpacked (top-left of the extensions page) and pick the nithic-extension-v2.0.99 folder you unzipped. Nithic loads instantly. Pin it to the toolbar for quick access.
Save the .zip and unzip it. You'll get a folder named nithic-firefox-v2.0.99 containing the extension's manifest.json.
about:debugging.Paste the URL — Firefox blocks regular pages from linking to about: URIs. Then click This Firefox in the left sidebar.
Click the Load Temporary Add-on… button. In the file picker, navigate into the nithic-firefox-v2.0.99 folder and select manifest.json directly (Firefox loads from the manifest, not the folder — opposite of Chrome).
Right-click Nithic's toolbar icon → Pin to Toolbar. The crystal shield should appear in the address bar — click it to confirm the popup loads.
You'll be prompted to migrate, and updates will flow automatically. The manual build you sideload today carries the same version channel — no data is lost on the migration.
The extension protects the browser. The sensor protects the rest of the machine — it
inspects MCP traffic from AI coding tools, watches Electron apps, guards
npm install, and scans agent skill files for prompt injection.
SHA-256 begins 5eb69d0b1b08472b — check it before you run anything:
sha256sum nithic-sensor-v0.17.0.zip on Linux/macOS, or
Get-FileHash nithic-sensor-v0.17.0.zip on Windows.
Expand-Archive nithic-sensor-v0.17.0.zip cd nithic-sensor powershell -ExecutionPolicy Bypass -File installers\windows\install.ps1
Run as administrator.
unzip nithic-sensor-v0.17.0.zip cd nithic-sensor sudo bash installers/macos/install.sh
Installs for the current user.
unzip nithic-sensor-v0.17.0.zip cd nithic-sensor sudo bash installers/linux/install.sh
Adds a per-user systemd service.
It rewrites your MCP client configs so tool traffic passes through a local proxy it can
read, and points ~/.npmrc at a local guard that blocks known-malicious
packages at fetch time. Both are restored by nithic-sensor stop or the
uninstaller — add --uninstall (-Uninstall on Windows) to the
script above. Its dashboard is at http://127.0.0.1:4020 and is reachable
only from your own machine.
To link it to an account: nithic-sensor enroll --tenant <slug> --secret
<secret>, from Account → Zero-touch enrollment in the portal. Unenrolled,
it runs entirely locally and reports nothing.