web-sandbox

82 / 100 · Low risk

Fine to try.

By antoniocascais/claude-code-toolkit (GitHub) · coding · 13 stars · scanned at commit 6463846

Runs web searches and page fetches inside an isolated Docker container instead of on the host, so browsing untrusted pages can't touch your machine and every query/URL is logged. Use when the user wants to search the web, research a topic online, fetch or read web pages, or asks for sandboxed, isolated, or contained web access. Requires a one-time build; reuses your existing host Claude login (mounted read-only). The container runs the official Claude Code CLI headless on Sonnet.

Works with any agent that supports SKILL.md skills.

What this skill can do

Downloads and installs other software

The author does not mention this.

Found in 1 place.

skills/web-sandbox/Dockerfile, line 7RUN npm install -g @anthropic-ai/claude-code

Connects to the internet

This is disclosed by the author in the skill's SKILL.md or README.

Found in 2 places.

skills/web-sandbox/Dockerfile, line 30' "allow": ["WebSearch", "WebFetch"],' \
skills/web-sandbox/Makefile, line 15ALLOW := WebSearch,WebFetch

Install

Paste this into your terminal. It downloads exactly the version we scanned, not whatever is newest.

if [ -e ~/.agents/skills/'web-sandbox' ] || [ -L ~/.agents/skills/'web-sandbox' ]; then echo 'A skill folder named web-sandbox already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/antoniocascais/claude-code-toolkit' "$d" && git -C "$d" checkout --quiet '646384623060eae12d6f5ec4251b18708a01778b' -- 'skills/web-sandbox' && mkdir -p ~/.agents/skills && cp -R "$d"/'skills/web-sandbox' ~/.agents/skills/'web-sandbox' && rm -rf "$d"; fi

Codex reads ~/.agents/skills directly. For Claude Code, Cursor, Copilot, Gemini CLI, Antigravity or OpenCode, also link it. For Claude Code: ln -s ~/.agents/skills/'web-sandbox' ~/.claude/skills/'web-sandbox' (other agents: ~/.cursor/skills, ~/.copilot/skills, ~/.gemini/skills, ~/.gemini/config/skills, ~/.config/opencode/skills). Or install through the finder skill, which does both.

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Score history

Date	Version	Score
2026-11-08	`6463846`	82