freebsd-guest

freebsd-guest is a skill for Claude Code, Codex from jordanhubbard/agentos. It costs 0 tokens per session (108 once invoked), scanned A, original, BSD-2-Clause.

A guide for preparing FreeBSD as a guest operating system in agentOS, using the same virtual-device interface as Linux. Only the guest kernel and device description differ.

In plain words
What is it for?
Fetching and staging a FreeBSD guest image and preparing its device description for the virtual machine monitor.
Why use it?
It keeps FreeBSD aligned with the platform's shared virtual machine architecture instead of creating a separate device path.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Fetching and staging a FreeBSD guest image and preparing its device description for the virtual machine monitor.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/jordanhubbard/agentos/freebsd-guest
Install

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.

Any agent
npx skills add jordanhubbard/agentos --skill freebsd-guest
Clone the repo
git clone --depth 1 https://github.com/jordanhubbard/agentos

Made for: Claude Code, Codex.

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.

agentmods badge for freebsd-guest

README.md
[![agentmods](https://agentmods.dev/badge/skills/jordanhubbard/agentos/freebsd-guest/github.svg)](https://agentmods.dev/skills/jordanhubbard/agentos/freebsd-guest)
Your own site
<a href="https://agentmods.dev/skills/jordanhubbard/agentos/freebsd-guest"><img src="https://agentmods.dev/badge/skills/jordanhubbard/agentos/freebsd-guest/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.

agentmods 80×15 button for freebsd-guest

Your own site · 80×15
<a href="https://agentmods.dev/skills/jordanhubbard/agentos/freebsd-guest"><img src="https://agentmods.dev/badge/skills/jordanhubbard/agentos/freebsd-guest.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 0 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 108 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.
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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00000 $0.00108
Opus 5 $0.00000 $0.00054
Sonnet 5 $0.00000 $0.00022
Haiku 4.5 $0.00000 $0.00011

Measured 6d ago against content hash 76f1d35fdaa6, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

freebsd-guest 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 6d 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.

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/freebsd-guest/SKILL.md · 14 lines

What it actually says

freebsd-guest

FreeBSD is a virtio client, same ABI as Linux.

Invariants

  • Same emulated virtio devices as Linux; different kernel + FDT only.
  • Do not give FreeBSD a private QEMU virtio-blk bus as architecture.
  • Do not grow kernel/freebsd-vmm/ — one VMM, two payloads (PLAN.md step 5).

Helper

make fetch-guest GUEST_OS=freebsd and the virtio-device skill.

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.

  1. 6d ago First seen · 14 lines · 0 tokens per session scan A 76f1d35fdaa6

Subscribe to this mod's changes

freebsd-guest is a skill published in the GitHub repository jordanhubbard/agentos (30 stars, last pushed today), licensed BSD-2-Clause. It costs nothing until one of its globs matches a file; then it loads 108 tokens. 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 2026-09-04.

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