Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add vinnie357/claude-skills --skill sbxgit clone --depth 1 https://github.com/vinnie357/claude-skillsWrote 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.
[](https://agentmods.dev/skills/vinnie357/claude-skills/sbx)<a href="https://agentmods.dev/skills/vinnie357/claude-skills/sbx"><img src="https://agentmods.dev/badge/skills/vinnie357/claude-skills/sbx/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.
<a href="https://agentmods.dev/skills/vinnie357/claude-skills/sbx"><img src="https://agentmods.dev/badge/skills/vinnie357/claude-skills/sbx.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 3 findings, up to high
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- high Tool Misuse · line 36 Tool calls are chained to bypass individual safety checks or escalate capabilities beyond what any single tool call would allow.Fix: Limit tool chaining depth and validate the output of each tool before passing it to the next. Require explicit user approval for multi-step chains.
- medium Privilege Escalation · line 36 Commands invoke sudo or root privileges. Verify this elevated access is necessary and justified.Fix: Avoid sudo/root unless strictly required. Prefer least-privilege patterns. If elevation is needed, document the justification and scope.
- medium Privilege Escalation · line 37 Commands invoke sudo or root privileges. Verify this elevated access is necessary and justified.Fix: Avoid sudo/root unless strictly required. Prefer least-privilege patterns. If elevation is needed, document the justification and scope.
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 | $0.00076 | $0.01713 |
| Opus 5.5 | $0.00030 | $0.00685 |
| Sonnet 5.5 | $0.00015 | $0.00343 |
| Haiku 4.5 | $0.00008 | $0.00171 |
Grade A, and why
sbx scanned grade A with 2 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 2mo ago.
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.
Asks for rootlowPrivilege escalation
A mod that escalates privileges can change anything on the machine, not only the project.
curl -fsSL https://get.docker.com | sudo REPO_ONLY=1 sh Downgraded: this mod is about security review, or the phrase is quoted, so it is likely naming the pattern rather than instructing it.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
curl -fsSL https://get.docker.com | sudo REPO_ONLY=1 sh How it starts
The opening of the file, as written. The whole thing — 216 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Docker Sandboxes (sbx)
What is sbx?
Docker Sandboxes runs AI coding agents in microVMs backed by a KVM hypervisor. The binary is sbx — not docker sbx. Each sandbox gets its own kernel, its own Docker daemon, and an isolated network namespace. Only the workspace directory is mounted into the VM. A credential proxy injects API keys host-side so secrets never enter the VM filesystem.
Install
macOS (Apple silicon, Sonoma+)
Requires Homebrew.
brew install docker/tap/sbx
Windows 11
Requires Hypervisor Platform enabled in Windows Features.
winget install Docker.sbx
Ubuntu 24.04+
Requires KVM and user in the kvm group.
curl -fsSL https://get.docker.com | sudo REPO_ONLY=1 sh
sudo apt-get install docker-sbx
mise (macOS, Linux)
mise's github backend extracts the platform tarball, preserves the bin/sbx + libexec/ layout, and verifies SLSA provenance. See templates/mise.toml.
[tools]
"github:docker/sbx-releases" = "0.30.0"
mise install
sbx version
Apple silicon and Linux x86_64 are confirmed. Windows is not packaged as a tarball asset — use winget above.
Authenticate
sbx login
Prompts for an API key and stores credentials locally.
Run an agent
# Create and immediately run a sandbox with Claude Code
sbx run claude
Available agents: Claude Code, Codex, Copilot, Cursor, Droid, Gemini, Kiro, OpenCode, Docker Agent, Shell (agent-less).
Create a sandbox in the background without attaching:
sbx create claude
Branch isolation
--branch auto creates a Git worktree for the sandbox, keeping branch changes isolated from the main working tree. Worktrees live under .sbx/ in the repo root. Add .sbx/ to .gitignore (or global gitignore) to keep it out of git status.
# Auto-create a worktree branch (with trailing path)
sbx run claude --branch auto .
# Target an existing branch
sbx run claude --branch my-feature
# Suggested gitignore entry
echo '.sbx/' >> .gitignore
What ships with it
9 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.
- references/commands.md 3.6 KB
- references/security-model.md 3.5 KB
- templates/elixir-tidewave/compose.yaml 381 B
- templates/elixir-tidewave/config-dev.exs.snippet 548 B
- templates/elixir-tidewave/endpoint.ex.snippet 652 B
- templates/elixir-tidewave/mise.toml 584 B
- templates/elixir-tidewave/mix.exs.snippet 281 B
- templates/elixir-tidewave/README.md 2.8 KB
- templates/mise.toml 681 B
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.
- 2mo ago First seen · 216 lines · 76 tokens per session scan A 3944ae0f77d2
sbx is a skill published in the GitHub repository vinnie357/claude-skills (27 stars, last pushed 14d ago), licensed MIT. It adds 76 tokens to every session and 1,713 once invoked, about $0.0003 per session on Opus 5.5. A static security scan graded it A with 2 findings (asks for root, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-04.
sbx compared with skills from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| sbxvinnie357/claude-skills | Skill | 27 | 14d ago | MIT | A | 76 | Claude Code |
| imagegenopenai/codex | Skill | 134k | today | Apache-2.0 | A | 113 | Codex |
| local-ai-agentsmicrosoft/ai-agents-for-beginners | Skill | 79k | 2d ago | MIT | A | 200 | Claude Code, Codex |
| playwright-climicrosoft/playwright | Skill | 100k | today | Apache-2.0 | A | 19 | Claude Code |
| browser-automationopenclaw/openclaw | Skill | 394k | today | MIT | A | 36 | Claude Code |
| systematic-debuggingobra/superpowers | Skill | 315k | 6d ago | MIT | A | 21 | Claude Code |
| next-cache-components-adoptionvercel/next.js | Skill | 143k | today | MIT | A | 95 | Claude Code |