Not listed on the Chrome Web Store, so it installs unpacked in developer mode. It reads the public API and stores nothing beyond your own settings.
Source lives at sdk/chrome-extension. Every reading a kit returns is settled and corrected in public: see the corrections register before citing one.
ⓘ Informational decision-support platform · We do NOT accept funds, manage money, or offer investment returns · Public datasets are CC BY 4.0 only where expressly marked · Platform software and private workspaces are excluded