Borrowing it
Nothing to install: this file belongs to alleneubank/claude-code. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/alleneubank/claude-code/main/.claude/skills/orbstack-best-practices/SKILL.mdgit clone --depth 1 https://github.com/alleneubank/claude-codeWrote 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/alleneubank/claude-code/orbstack-best-practices)<a href="https://agentmods.dev/skills/alleneubank/claude-code/orbstack-best-practices"><img src="https://agentmods.dev/badge/skills/alleneubank/claude-code/orbstack-best-practices/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/alleneubank/claude-code/orbstack-best-practices"><img src="https://agentmods.dev/badge/skills/alleneubank/claude-code/orbstack-best-practices.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00032 | $0.01028 |
| Opus 5.5 | $0.00013 | $0.00411 |
| Sonnet 5.5 | $0.00006 | $0.00206 |
| Haiku 4.5 | $0.00003 | $0.00103 |
Grade B, and why
orbstack-best-practices scanned grade B with 1 finding 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 1mo 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 rootmediumPrivilege escalation
A mod that escalates privileges can change anything on the machine, not only the project.
**Rosetta x86 error**: `sudo dpkg --add-architecture amd64 && sudo apt install libc6:amd64` How it starts
The opening of the file, as written. The whole thing — 114 lines — stays where its author put it; the contents beside it link to each section on GitHub.
OrbStack Best Practices
OrbStack is a fast Docker and Linux VM runtime for macOS. Replaces Docker Desktop with better performance and seamless macOS integration.
Core Commands
# Machine lifecycle
orb list # List machines
orb create ubuntu:noble myvm # Create (distro:version name)
orb create --arch amd64 ubuntu x86vm # x86 emulation via Rosetta
orb create ubuntu myvm -c cloud.yml # With cloud-init
orb start/stop/restart/delete myvm
orb default myvm # Set default machine
# Shell and exec
orb # Shell into default machine
orb -m myvm -u root # Specific machine + user
orb -m myvm ./script.sh # Run command in machine
# File transfer
orb push ~/local.txt # Copy to default machine home
orb pull ~/remote.txt # Copy from default machine
orb push -m vm ~/f.txt /tmp/ # Specific machine + path
# Docker/K8s
orb restart docker # Restart Docker engine
orb logs docker # Docker engine logs
orb start k8s / orb delete k8s
# Config
orb config set memory_mib 8192
orb config set cpu 4
orb config set rosetta true
orb config set network_proxy http://proxy:8080
Key Paths
| Location | Path |
|---|---|
| Linux files from macOS | ~/OrbStack/<machine>/ |
| Docker volumes from macOS | ~/OrbStack/docker/volumes/ |
| macOS files from Linux | /mnt/mac/Users/... (also at same path directly) |
| Other machines from Linux | /mnt/machines/<name>/ |
| SSH key | ~/.orbstack/ssh/id_ed25519 |
| Docker daemon config | ~/.orbstack/config/docker.json |
Networking (OrbStack-Specific)
Servers in Linux machines are automatically available on localhost on macOS — no port mapping required.
DNS names:
| Pattern | Resolves to |
|---|---|
<machine>.orb.local |
Linux VM |
<container>.orb.local |
Docker container |
<svc>.<project>.orb.local |
Compose service |
host.orb.internal |
macOS host (from Linux machine) |
host.docker.internal |
macOS host (from container) |
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.
- 1mo ago First seen · 114 lines · 32 tokens per session scan B 9e1d3919ad0c
orbstack-best-practices is a skill published in the GitHub repository alleneubank/claude-code (50 stars, last pushed 3mo ago), licensed Apache-2.0. It adds 32 tokens to every session and 1,028 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it B with 1 finding (asks for root). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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