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 gaelic-ghost/socket --skill choose-macos-virtualization-shapegit clone --depth 1 https://github.com/gaelic-ghost/socketWrote 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/gaelic-ghost/socket/choose-macos-virtualization-shape)<a href="https://agentmods.dev/skills/gaelic-ghost/socket/choose-macos-virtualization-shape"><img src="https://agentmods.dev/badge/skills/gaelic-ghost/socket/choose-macos-virtualization-shape/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/gaelic-ghost/socket/choose-macos-virtualization-shape"><img src="https://agentmods.dev/badge/skills/gaelic-ghost/socket/choose-macos-virtualization-shape.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 | $0.00054 | $0.00953 |
| Opus 5.5 | $0.00022 | $0.00381 |
| Sonnet 5.5 | $0.00011 | $0.00191 |
| Haiku 4.5 | $0.00005 | $0.00095 |
Grade A, and why
choose-macos-virtualization-shape 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 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.
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.
How it starts
The opening of the file, as written. The whole thing — 72 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Choose macOS Virtualization Shape
Purpose
Choose one boundary from evidence about fidelity, persistence, portability, host integration, threat level, and resources. Produce the shared shape record in virtualization-shape-record.md; do not return an undecided product menu.
When To Use
- Use for macOS-hosted development, clean-state validation, Linux compatibility, custom VM tools, and security-lab boundary selection.
- Use when container, persistent Linux machine, full VM, and physical Mac terminology is being mixed.
- Use before
virtualization-framework-workflow, either development-VM workflow, orprepare-isolated-analysis-labwhen the boundary is not already approved.
Single-Path Workflow
- Record the purpose, host, target OS and architecture, GUI/headless needs, privileges, kernel/devices, expected lifetime, and evidence requirements.
- Classify fidelity and risk:
- trusted native macOS behavior: host process
- one portable Linux application: OCI container
- Apple-native per-container VM runtime: Apple
container - persistent OCI-backed Linux environment with services:
container machine - custom kernel, boot, disk, full-system, or GUI Linux: full Linux VM
- native macOS security, installer, signing, privacy, or OS-version behavior: macOS VM
- hardware, recoveryOS, Secure Enclave, unsupported device, performance, or anti-VM behavior: physical Mac
- Reject any option that cannot reproduce the target or safely bound the expected behavior.
- Choose one primary boundary and one explicit fallback only when a named fidelity or availability gap requires it.
- Complete the shape record with provenance, resources, integrations, lifecycle, validation, evidence, and uncertainty.
- Hand off implementation or operation to the owner skill.
Inputs
- Task purpose and target behavior.
- Host chip, macOS build, memory, storage, and toolchain.
- Guest OS/version/distro, architecture, devices, privilege, and lifetime.
- Portability, persistence, integration, isolation, and evidence requirements.
What ships with it
3 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.
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 · 72 lines · 54 tokens per session scan A 073538e28ebb
choose-macos-virtualization-shape is a skill published in the GitHub repository gaelic-ghost/socket (7 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 54 tokens to every session and 953 once invoked, about $0.0002 per session on Opus 5.5. 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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