Pattern: Knowledge. The decision rule for this category: isolation is a binary architectural default, not a tunable policy — a runtime either sandboxes by default or it doesn't, and "sandboxing is available if configured" is evidence for this finding, not evidence against it. Mechanism lives in scripts/detector.py: the two halves of Host Escape's defining condition — a bundled-script call site planting host persistence, and a declared write scope reaching filesystem root — plus the declared shell posture, shared-state write scope and sandbox declaration. Frozen scenario tiers live in…
ast06-weak-isolation is a community-contributed Claude Code skill in the web-security sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/ast06/ and loads when your prompt matches the skill's trigger.
When to invoke it: Use when reviewing an agent runtime's default execution mode, when a workspace-level skill can override a bundled one via hot-reload, when an agent control interface binds to a network-reachable address, or when deciding whether a permission-boundary finding is AST03 or AST06.
The ast06-weak-isolation Claude Code skill is built for security engineers, penetration testers, DevSecOps practitioners, and development teams hardening codebases and infrastructure. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 213,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).
mkdir -p ~/.claude/skills/ast06 curl -L https://claudskills.com/skills/ast06/SKILL.md \ -o ~/.claude/skills/ast06/SKILL.md
Or just download SKILL.md directly and drop it into ~/.claude/skills/ast06/. Claude Code auto-discovers it on next session.
Skills live at ~/.claude/skills/ast06/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\ast06\SKILL.md on Windows. See the full install guide for step-by-step instructions.
Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →
The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.
For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.
SKILL.md from the source repository to ~/.claude/skills/ast06/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. ast06-weak-isolation is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Security category. Learn more at /learn/what-is-a-claude-skill/.If you reference this skill in a blog post, paper, or documentation, you can cite it as:
@misc{ast06-2026,
author = {ClaudSkills},
title = {ast06-weak-isolation [Claude Code skill]},
year = {2026},
publisher = {ClaudSkills},
url = {https://claudskills.com/skills/ast06/}
}Grade A · scanned 2026-11-01 — free static scan against the OWASP Agentic Skills Top 10.
The scan flagged 1 of 10 categories (network), including lower-severity patterns. Patterns shown inside code fences are weighted as examples rather than instructions — read the grading methodology for what this does and does not guarantee.
Browse all Security skills in the ClaudSkills registry, or explore these other picks from the same category:
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SKILL.md files, not affiliated with, endorsed by, or sponsored by Anthropic.