Moving from a CLI to reference scripts.

The packaged check-pqc / @aegyrix/check-pqc CLI and CheckPQC PowerShell module are being phased out. New installers and a standalone public API are no longer offered by this site. Free domain scans remain available on the website.

Use the local scripts and checks for websites, SSH, email and other services. They require no CheckPQC package, account or API key. For the current browser, use the browser connection check.

If you already installed a package

Historical packages may remain on registries. The hosted mode can fail because the public probe endpoint is closed. Update CI jobs and saved scripts to perform a local check and interpret inconclusive results explicitly. Internal integrations are maintained separately.

Remove only the package you installed, using the same package manager and scope:

# npm global installations
npm uninstall -g check-pqc
npm uninstall -g @aegyrix/check-pqc

# PowerShell Gallery installation
Uninstall-Module -Name CheckPQC -AllVersions

For Homebrew, WinGet or manually installed copies, use the original install method's uninstall instructions. Uninstalling is optional; do not delete unrelated Node.js, PowerShell or OpenSSL installations.