Run the installer. Mercy SF carries no code signing certificate, so Windows SmartScreen will warn about an unknown publisher: choose More info, then Run anyway. If Windows refuses outright and offers no way past it, that is Smart App Control rather than SmartScreen, and no per-file override exists for it. Take the .msi from the file list instead. It installs the same build through the Windows installer service, and it is quicker about it. If you would rather check first, compare the file against the published SHA-256 checksum.

macOS

Open the .dmg and drag Mercy SF to Applications. On the first launch, right-click the app and choose Open so macOS accepts it.

Linux

The AppImage needs no installation: mark it executable and run it. The .deb installs with your package manager.

Android

The phone app is a remote control, not a second bot: it drives accounts running on a server or on your own PC. Android only for now, and it is installed by opening the .apk, which asks once for permission to install from this source.

What it needs

Windows 10 or newer, 64-bit
macOS 12 or newer, Apple Silicon or Intel
A 64-bit distribution with WebKitGTK 4.1
Around 550 MB in total, however many characters you run

Headless build

For servers and scripts. Same engine, no window, a documented JSON interface on stdin and stdout.

CLI reference

SHA-256 checksums for every file here: /downloads/SHA256SUMS.txt