prepare-isolated-analysis-lab

prepare-isolated-analysis-lab is a skill for Claude Code, Codex from gaelic-ghost/socket. It costs 46 tokens per session (832 once invoked), scanned A, original, Apache-2.0.

A guide for preparing a disposable Linux or macOS analysis lab from an approved isolation plan. It checks the base system, networking, host integration, monitoring, evidence export, reset, and teardown.

In plain words
What is it for?
Use it before researching suspicious files, installers, services, or other content that may affect a computer or network.
Why use it?
It limits what untrusted content can access and makes analysis conditions easier to review and reproduce.

Skill for Claude CodeCodex

Part of the cybersecurity-skills plugin — 31 skills shipped together

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.

agentmods
npx agentmods add skills/gaelic-ghost/socket/prepare-isolated-analysis-lab
Any agent
npx skills add gaelic-ghost/socket --skill prepare-isolated-analysis-lab
Clone the repo
git clone --depth 1 https://github.com/gaelic-ghost/socket

Made for: Claude Code, Codex.

Or install cybersecurity-skills, the plugin that ships this one along with the rest of its 31 skills.

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 prepare-isolated-analysis-lab

README.md
[![agentmods](https://agentmods.dev/badge/skills/gaelic-ghost/socket/prepare-isolated-analysis-lab.svg)](https://agentmods.dev/skills/gaelic-ghost/socket/prepare-isolated-analysis-lab)
Your own site
<a href="https://agentmods.dev/skills/gaelic-ghost/socket/prepare-isolated-analysis-lab"><img src="https://agentmods.dev/badge/skills/gaelic-ghost/socket/prepare-isolated-analysis-lab.svg" alt="Measured on agentmods" height="20"></a>
Per session 46 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 832 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00046 $0.00832
Opus 5 $0.00023 $0.00416
Sonnet 5 $0.00009 $0.00166
Haiku 4.5 $0.00005 $0.00083

Measured yesterday against content hash 2235ab927cce, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

prepare-isolated-analysis-lab 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 yesterday.

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.

plugins/cybersecurity-skills/skills/prepare-isolated-analysis-lab/SKILL.md · 59 lines

How it starts

The opening of the file, as written. The whole thing — 59 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Prepare Isolated Analysis Lab

Overview

Turn the boundary selected by select-analysis-isolation into a concrete, reviewable control profile before executing untrusted content. Evidence collection and analysis remain owned by their specialist skills.

Read security-lab-control-profile.md before approving a lab.

Workflow

  1. Consume the approved isolation decision.
    • Record authorization, unresolved question, target OS/architecture/privilege, expected behavior, selected boundary, host/guest builds, and VM artifacts that may affect conclusions.
  2. Select one profile.
    • offline static tooling
    • monitored Linux dynamic analysis
    • monitored macOS dynamic analysis
    • network-service research
    • nested-virtualization experiment
  3. Verify a trusted base.
    • Record image/restore provenance and digest, guest build, tool versions, clock strategy, resource limits, baseline state or hashes, reset mechanism, and virtualization artifacts that may change observed behavior.
  4. Remove ambient authority.
    • Default host folders/home sharing, clipboard, drag/drop, sockets, SSH agent, browser profiles, cloud credentials, Apple accounts, signing identities, USB, microphone, camera, and unrelated devices to absent.
  5. Constrain and observe networking.
    • Default to offline or simulated services.
    • When external connectivity is authorized, record destinations, routes, DNS, monitoring/capture, ingress, egress, and forwarded ports.
  6. Define a narrow evidence path.
    • Name the guest staging location, allowed artifact types, host export directory, hashing and scanning steps, size limits, and owner.
  7. Run a preflight without executing the target.
    • Verify accounts, shares, clipboard, devices, sockets, credentials, network, monitoring, clock, baseline, stop controls, export path, and reset operation.
  8. Hand the prepared-lab record to perform-dynamic-malware-analysis or the relevant observation skill.
  9. Verify teardown.
    • Stop the workload; export only intended evidence; hash/scan it; revert or remove disposable state; revoke temporary credentials; remove shares/ports/helpers; confirm no workload or integration remains active.

Read the full file on GitHub · 59 lines

Files

What ships with it

2 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.

  1. yesterday First seen · 59 lines · 46 tokens per session scan A 2235ab927cce

Subscribe to this mod's changes

prepare-isolated-analysis-lab is a skill published in the GitHub repository gaelic-ghost/socket (7 stars, last pushed 9d ago), licensed Apache-2.0. It adds 46 tokens to every session and 832 once invoked, about $0.0002 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 2026-09-03.

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