CC cachyos-expert
Senior Systems Engineer für CachyOS und Arch Linux. Nutze bei ALLEN Fragen zu CachyOS, Arch, Pacman, AUR, paru/yay, BORE/EEVDF, sched-ext/scx, ZRAM, BTRFS, Gaming (Proton, GameMode, Wine), chwd, cachyos-Kernel, mkinitcpio/dracut, systemd-boot/GRUB, Wayland/Xorg, NVIDIA/AMD, sysctl, udev, Boot-Probleme, PipeWire, Bluetooth, Netzwerk, Firewall, VPN, Snapper/Borg Backup, LUKS, Secure Boot, Docker/Podman, KVM/QEMU, GPU-Passthrough, PKGBUILD, Flatpak, TLP, Systemd-Units. Triggert bei: 'pacman Fehler', 'AUR bauen', 'Kernel wechseln', 'Boot hängt', 'Linux Gaming', 'System schneller', 'NVIDIA Problem', 'PipeWire', 'BTRFS Fehler', 'systemctl failed', 'Arch chroot', 'VM einrichten', 'Podman rootless', 'mein CachyOS', 'mein Arch'.
As a process C 53/100 · Has gaps — weak spots: result and completion, when it triggers, inputs and preconditions
What is at stake
Medium-severity findings: the skill is probably honest, but read what alarmed the scanner.
Below is the worst case for this category. The finding here is medium: the guard saw a sign, not a proof.
The skill contains commands that delete files, rewrite disks or execute code fetched from the network. The agent may run them without asking if it believes the instructions require it.
Replace destructive commands with safe equivalents that ask for confirmation, scope them to one folder, and stop piping curl into a shell: pin a version and a checksum.
How to improve
- Say in the description WHEN to use the skill ("use when…", example requests): that is the agent's main cue.
- Your own cases (evals/evals.json, 4–6 real requests with expected answers): the full check would then run those instead of a model-drafted suite.
- A spec.yaml with trigger phrases and assertions — a behaviour contract for CI; `skilltest init` writes a template.
Guard findings · 43
✓ No critical or high findings
Medium and low: 43
-
medium Dangerous commands
cmd-destructive-fs-scopedreferences/boot-and-encryption.md:224Destructive command on a partition / current directory (normal in admin docs; verify the target) (documentation of a security skill)sudo mkfs.btrfs /dev/mapper/cryptroot
security skill -
low Dangerous commands
cmd-background-processreferences/backup-and-recovery.md:36Starts a background / autostarted process (documentation of a security skill)sudo systemctl enable --now snapper-timeline.timer
security skill -
low Dangerous commands
cmd-background-processreferences/backup-and-recovery.md:37Starts a background / autostarted process (documentation of a security skill)sudo systemctl enable --now snapper-cleanup.timer
security skill -
low Dangerous commands
cmd-background-processreferences/backup-and-recovery.md:58Starts a background / autostarted process (documentation of a security skill)sudo systemctl enable --now grub-btrfsd
security skill -
low Dangerous commands
cmd-background-processreferences/backup-and-recovery.md:110Starts a background / autostarted process (documentation of a security skill)sudo systemctl enable --now btrbk.timer
security skill -
low Dangerous commands
cmd-privilegereferences/boot-and-encryption.md:49Privilege escalation / world-writable permissions (documentation of a security skill)sudo cp /boot/loader/entries/linux-cachyos.conf /boot/loader/entries/linux-cachyos-lts.conf
security skill -
low Dangerous commands
cmd-privilegereferences/boot-and-encryption.md:224Privilege escalation / world-writable permissions (documentation of a security skill)sudo mkfs.btrfs /dev/mapper/cryptroot
security skill -
low Dangerous commands
cmd-privilegereferences/boot-and-encryption.md:236Privilege escalation / world-writable permissions (documentation of a security skill)sudo dd if=/dev/urandom of=/etc/cryptsetup-keys.d/cryptroot.key bs=512 count=4
security skill -
low Dangerous commands
cmd-privilegereferences/boot-and-encryption.md:237Privilege escalation / world-writable permissions (documentation of a security skill)sudo chmod 000 /etc/cryptsetup-keys.d/cryptroot.key
security skill -
low Dangerous commands
cmd-background-processreferences/desktop-and-audio.md:161Starts a background / autostarted process (documentation of a security skill)sudo systemctl enable gdm
security skill -
low Dangerous commands
cmd-background-processreferences/desktop-and-audio.md:260Starts a background / autostarted process (documentation of a security skill)sudo systemctl enable sddm
security skill -
low Dangerous commands
cmd-background-processreferences/desktop-and-audio.md:263Starts a background / autostarted process (documentation of a security skill)sudo systemctl enable gdm
security skill -
low Dangerous commands
cmd-background-processreferences/desktop-and-audio.md:267Starts a background / autostarted process (documentation of a security skill)sudo systemctl enable lightdm
security skill -
low Dangerous commands
cmd-background-processreferences/desktop-and-audio.md:277Starts a background / autostarted process (documentation of a security skill)sudo systemctl enable gdm
security skill -
low Dangerous commands
cmd-background-processreferences/networking.md:72Starts a background / autostarted process (documentation of a security skill)sudo systemctl enable --now iwd.service
security skill -
low Dangerous commands
cmd-background-processreferences/networking.md:96Starts a background / autostarted process (documentation of a security skill)sudo systemctl enable --now systemd-networkd systemd-resolved
security skill -
low Dangerous commands
cmd-background-processreferences/networking.md:127Starts a background / autostarted process (documentation of a security skill)sudo systemctl enable --now firewalld
security skill -
low Dangerous commands
cmd-background-processreferences/networking.md:182Starts a background / autostarted process (documentation of a security skill)sudo systemctl enable --now nftables
security skill -
low Dangerous commands
cmd-background-processreferences/networking.md:192Starts a background / autostarted process (documentation of a security skill)sudo systemctl enable --now systemd-resolved
security skill -
low Dangerous commands
cmd-privilegereferences/networking.md:270Privilege escalation / world-writable permissions (documentation of a security skill)echo 'net.…ard=1' | sudo tee /etc/sysctl.d/99-t…onf
security skill -
low Dangerous commands
cmd-privilegereferences/networking.md:271Privilege escalation / world-writable permissions (documentation of a security skill)echo 'net.…ing=1' | sudo tee -a /etc/sysctl.d/99-t…onf
security skill -
low Dangerous commands
cmd-privilegereferences/package-management.md:192Privilege escalation / world-writable permissions (documentation of a security skill)sudo rm -rf /etc/pacman.d/gnupg
security skill -
low Dangerous commands
cmd-background-processreferences/performance-tweaks.md:41Starts a background / autostarted process (documentation of a security skill)sudo systemctl enable --now scx.service
security skill -
low Dangerous commands
cmd-privilegereferences/performance-tweaks.md:104Privilege escalation / world-writable permissions (documentation of a security skill)echo 'vm.swappiness=180' | sudo tee /etc/sysctl.d/99-s…onf
security skill -
low Dangerous commands
cmd-privilegereferences/performance-tweaks.md:108Privilege escalation / world-writable permissions (documentation of a security skill)echo 'vm.watermark_scale_factor=125' | sudo tee -a /etc/sysctl.d/99-s…onf
security skill -
low Dangerous commands
cmd-privilegereferences/performance-tweaks.md:109Privilege escalation / world-writable permissions (documentation of a security skill)echo 'vm.watermark_boost_factor=0' | sudo tee -a /etc/sysctl.d/99-s…onf
security skill -
low Dangerous commands
cmd-privilegereferences/performance-tweaks.md:125Privilege escalation / world-writable permissions (documentation of a security skill)echo madvise | sudo tee /sys/kernel/mm/transparent_hugepage/enabled
security skill -
low Dangerous commands
cmd-privilegereferences/performance-tweaks.md:128Privilege escalation / world-writable permissions (documentation of a security skill)echo 'vm.nr_hugepages=1024' | sudo tee /etc/sysctl.d/99-h…onf
security skill -
low Dangerous commands
cmd-background-processreferences/performance-tweaks.md:310Starts a background / autostarted process (documentation of a security skill)sudo systemctl enable nvidia-suspend.service
security skill -
low Dangerous commands
cmd-background-processreferences/performance-tweaks.md:311Starts a background / autostarted process (documentation of a security skill)sudo systemctl enable nvidia-resume.service
security skill -
low Dangerous commands
cmd-background-processreferences/performance-tweaks.md:312Starts a background / autostarted process (documentation of a security skill)sudo systemctl enable nvidia-hibernate.service
security skill -
low Dangerous commands
cmd-background-processreferences/performance-tweaks.md:315Starts a background / autostarted process (documentation of a security skill)sudo systemctl enable nvidia-persistenced.service
security skill -
low Dangerous commands
cmd-background-processreferences/systemd-and-diagnostics.md:62Starts a background / autostarted process (documentation of a security skill)sudo systemctl enable <service>
security skill -
low Dangerous commands
cmd-background-processreferences/systemd-and-diagnostics.md:64Starts a background / autostarted process (documentation of a security skill)sudo systemctl enable --now <service> # Enable + Start
security skill -
low Dangerous commands
cmd-background-processreferences/systemd-and-diagnostics.md:148Starts a background / autostarted process (documentation of a security skill)sudo systemctl enable --now mein-backup.timer
security skill -
low Dangerous commands
cmd-background-processreferences/virtualization.md:26Starts a background / autostarted process (documentation of a security skill)sudo systemctl enable --now libvirtd.service
security skill -
low Dangerous commands
cmd-background-processreferences/virtualization.md:27Starts a background / autostarted process (documentation of a security skill)sudo systemctl enable --now virtlogd.service
security skill -
low Dangerous commands
cmd-privilegereferences/virtualization.md:70Privilege escalation / world-writable permissions (documentation of a security skill)# Intel: echo 'options kvm_intel nested=1' | sudo tee /etc/modprobe.d/kvm-nested.conf
security skill -
low Dangerous commands
cmd-privilegereferences/virtualization.md:71Privilege escalation / world-writable permissions (documentation of a security skill)# AMD: echo 'options kvm_amd nested=1' | sudo tee /etc/modprobe.d/kvm-nested.conf
security skill -
low Dangerous commands
cmd-background-processreferences/virtualization.md:138Starts a background / autostarted process (documentation of a security skill)sudo systemctl enable --now docker.service
security skill -
low Dangerous commands
cmd-background-processreferences/virtualization.md:238Starts a background / autostarted process (documentation of a security skill)sudo systemctl enable --now lxd.service
security skill -
low Risky intent
intent-offensive-securityskill-card.md:25Offensive-security / dual-use content (legitimate for authorised testing; review intended use)Mitigation: Explain the security impact first, apply the narrowest change needed, and avoid remote script piping or privilege escalation unless the user confirms the tradeoff. <br>
-
low Dangerous commands
cmd-privilegeSKILL.md:24Privilege escalation / world-writable permissions (documentation of a security skill)sudo cp /etc/<datei> /etc/<datei>.bak.$(date +%F)
security skill
Files scanned: 11. Evidence is masked. Grey chips explain why severity was lowered.
Against the Agent Skills spec
- warning
description-no-whendescription does not say WHEN to use the skill (no "use when")
Process rating: all ten parameters 53/100
- 0Result and completion. Does not say what the result is
- 0Inputs and preconditions. Does not say what the process needs to start
- 20When it triggers. No condition that starts the skill
- 50Failures and branches. 0 branches, has a failure section
- 60Tools and files. Uses tools (bash) that frontmatter does not declare
- 100Steps. 23 steps
- 100Consistency. Name and required fields are in place
- 100Execution cost. Instruction body is 698 tokens
- 100Running it twice. No mutating operations
- 100Progress reporting. Reports progress
Everything here is measured from the skill text rather than judged by a model, so the numbers are checkable. A parameter weighs more when it is a more common reason for the process to stall.
Quality signals
- +5Description has no quoted example phrases that should trigger the skill
- +4Description does not say when NOT to use the skill (false activations)
- +3Output format is not stated: the model decides each time
- +1No license
- +2Single-language instructions
- +3Description length 729: enough signal without eating the budget
- +4Structure: 7 headings
- +3Step-by-step instructions: 23 items
- +4Has examples (2 code blocks)
- +4Reference files are cited in the instructions (9 of 9)
Quality base 70; lint remarks subtract, signals add up to 100. Result: 76.