Termux (Android)

KosmoKrator runs on Android via Termux, a terminal emulator that provides a full Linux environment without root. This guide covers all three installation methods — static binary, PHAR, and source — with Termux-specific tips and workarounds.

Prerequisites

Install Termux from F-Droid. The Google Play version is outdated and no longer receives updates — always use the F-Droid release.

Once Termux is open, update the package index:

pkg update && pkg upgrade -y

Static Binary (Recommended)

The fastest path. Most Android devices use ARM, so download the aarch64 binary. No PHP installation required.

pkg install -y curl

curl -fSL https://github.com/OpenCompanyApp/kosmokrator/releases/latest/download/kosmokrator-linux-aarch64 \
  -o $PREFIX/bin/kosmo \
  && chmod +x $PREFIX/bin/kosmo

Verify:

kosmo --version

Tip: Termux uses $PREFIX/bin (typically /data/data/com.termux/files/usr/bin) instead of /usr/local/bin. There is no sudo — Termux packages are installed in user space.

PHAR Package

If you prefer the PHAR, install PHP first:

pkg install -y php curl

curl -fSL https://github.com/OpenCompanyApp/kosmokrator/releases/latest/download/kosmokrator.phar \
  -o $PREFIX/bin/kosmo \
  && chmod +x $PREFIX/bin/kosmo

Termux’s PHP package ships with curl, mbstring, openssl, and pdo_sqlite built in. Verify with:

php -m | grep -E 'curl|mbstring|openssl|pdo_sqlite|pcntl|readline'

If any extensions are missing, install the matching Termux package:

pkg install -y php-pdo php-sqlite

From Source

A source checkout gives you the full development environment.

Install packages

pkg install -y php git composer openssh

Clone and install

git clone https://github.com/OpenCompanyApp/kosmokrator.git
cd kosmokrator
composer install

Run directly from the checkout:

php bin/kosmo --renderer=ansi

Or symlink for convenience:

ln -s "$(pwd)/bin/kosmo" $PREFIX/bin/kosmo

Tip: If Composer runs out of memory, set COMPOSER_MEMORY_LIMIT=-1 composer install to remove the cap.

First Run

Run the setup wizard to configure your LLM provider:

kosmo setup

Then start a session. Use ANSI mode for the most reliable experience:

kosmo --renderer=ansi

The ANSI renderer works well in Termux and does not depend on stty or pcntl features that may behave differently on Android.

Choosing a Renderer

Renderer	Termux Support	Notes
ansi	Recommended	Pure escape codes, works everywhere, readline input
tui	Experimental	Requires stty and a terminal that correctly reports size. May work in Termux but can be glitchy on some devices.

If you want to try the TUI renderer, launch with kosmo --renderer=tui and fall back to ANSI if you encounter display issues.

Keyboard Tips

A hardware keyboard or Hacker’s Keyboard makes the experience much better. If you are using the default Termux soft keyboard:

• Swipe the extra-keys bar left/right to access Ctrl, Tab, Esc, and arrow keys
• Long-press the volume-down key while typing for Ctrl combos
• Ctrl+C cancels a running tool, Ctrl+D exits the session

Storage & Sessions

By default, KosmoKrator stores its SQLite database and configuration in ~/.kosmo/. In Termux, ~ resolves to /data/data/com.termux/files/home, which is private to the Termux app.

If you need to access project files on shared storage (Downloads, Documents, etc.), grant Termux storage access first:

termux-setup-storage

This creates ~/storage/ with symlinks to shared directories. You can then cd ~/storage/downloads to work on files there.

Troubleshooting

stty: stdin not a terminal

This warning is harmless. The ANSI renderer handles it gracefully. If you see persistent issues, force ANSI mode with --renderer=ansi.

SQLite errors or permission denied

Ensure the storage directory is writable:

chmod -R 775 ~/.kosmo/

If running from source, also check the project’s storage/ directory:

chmod -R 775 storage/

Composer memory errors

Termux’s default memory limit may be too low for Composer on some devices. Override it:

COMPOSER_MEMORY_LIMIT=-1 composer install

Process killed by Android

Android may kill background Termux processes to reclaim memory. To keep sessions alive:

• Run termux-wake-lock to acquire a wake lock
• In Android settings, disable battery optimization for the Termux app
• Use Termux:API with termux-notification for persistent foreground notifications

pcntl extension not available

The pcntl extension may not be available in Termux’s PHP build. KosmoKrator’s ANSI renderer works without it — Revolt’s event loop falls back to stream_select. You can safely ignore pcntl-related warnings when using ANSI mode.