A tool for launching and managing isolated Linux microVMs, which are small virtual machines, from macOS or Linux. It supports environments for builds, tests, containers, browsers, Kubernetes, and coding agents.

Use it to run sandboxed builds, end-to-end tests, Docker workflows, headless browsers, CI jobs, test Kubernetes clusters, or coding agents in isolated Linux VMs.

It keeps development and testing work separate from the host computer and can provide repeatable, disposable environments. It also supports preparing one VM and making clean copies for later runs.

use-slicer — Skill for Claude Code by slicervm

Install

Getting it into your agent

There is no command for this one: it runs only inside a plugin, and the catalogue could not identify which plugin ships it. The source is linked below.

Made for: Claude Code.

Its marketplace also offers this one on its own, as the plugin use-slicer — /plugin install use-slicer after adding the marketplace above.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/skills/slicervm/agent-skills/use-slicer/github.svg)](https://agentmods.dev/skills/slicervm/agent-skills/use-slicer)

Your own site

<a href="https://agentmods.dev/skills/slicervm/agent-skills/use-slicer"><img src="https://agentmods.dev/badge/skills/slicervm/agent-skills/use-slicer/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/skills/slicervm/agent-skills/use-slicer"><img src="https://agentmods.dev/badge/skills/slicervm/agent-skills/use-slicer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 56 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 7,807 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. ✓ AI security review Sonnet 5 · 7 Sept 2026 📄 Read the review

Origin original No closer match found in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.00056	$0.07807
Opus 5	$0.00028	$0.03904
Sonnet 5	$0.00011	$0.01561
Haiku 4.5	$0.00006	$0.00781

Measured 9d ago against content hash 44d8c6e6a381, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

use-slicer scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 9d ago.

The scan reads SKILL.md. This mod also ships 2 executable files (scripts/firefox-bidi.mjs, scripts/firefox-bidi.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/use-slicer/SKILL.md · 690 lines

How it starts

The opening of the file, as written. The whole thing — 690 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Use Slicer — Launch Linux MicroVMs

Slicer gives you instant Linux microVMs through Firecracker on Linux and Apple Virtualization on macOS. Use it when you need:

A real Linux environment with systemd, Internet access, and SSH preinstalled (especially from macOS)
Sandboxed builds, CI, or E2E tests
Docker/container workflows with port forwarding
Isolated environments for untrusted or destructive operations
Kubernetes (k3s) clusters for testing
GPU/PCI passthrough workloads (via cloud-hypervisor backend)
Automated code review pipelines in ephemeral microVMs
Preparing one builder VM, then cold-forking clean runners without repeating setup
Running coding agents in isolated microVMs (Amp, Claude Code, Codex, OpenCode, GitHub Copilot CLI) then copying out the outcome - code, files, reports, binaries, images, etc.

VMs boot in 1–3 seconds, have full systemd, internet access, and SSH pre-installed.

Docs: https://docs.slicervm.com Go SDK: https://github.com/slicervm/sdk (github.com/slicervm/sdk)

On macOS, the CLI drives Slicer for Mac — a persistent Linux VM plus an sbox host group for sandboxes. See references/macos.md.

Install or update Slicer itself

Use Slicer's own installation and update paths. Never run arkade get slicer: Slicer is not an arkade tool. Use arkade for other CLI tools when appropriate, including tools installed inside a guest, but do not infer that it installs or upgrades Slicer.

Fresh Linux installation (and the Slicer CLI on macOS):

curl -sLS https://get.slicervm.com | sudo bash

Update an existing installation atomically, then verify it:

sudo slicer update
slicer version

For a non-destructive side-by-side version test, let the installed Slicer client fetch the correct OS/architecture binary into a temporary directory:

TEST_DIR=$(mktemp -d)
slicer update --version 0.1.216 --path "$TEST_DIR"
"$TEST_DIR/slicer" version
# Remove TEST_DIR after testing.

Read the full file on GitHub · 690 lines

Files

What ships with it

16 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

9d ago First seen · 690 lines · 56 tokens per session scan F 44d8c6e6a381

Subscribe to this mod's changes

use-slicer is a skill published in the GitHub repository slicervm/agent-skills (5 stars, last pushed 4d ago), licensed MIT. It adds 56 tokens to every session and 7,807 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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