hooks-and-guardrails

84 / 100 · Low risk

Fine to try. Some of what it can do is expected: a coding skill usually runs build and test commands.

By krzysztofsurdy/code-virtuoso (GitHub) · coding · 27 stars · scanned at commit 70f43af

Adds guardrails to an AI coding agent setup, including deny rules for secrets, sandbox and permission choices, and hooks that block .env reads and gate 'done' on passing tests. Use when hardening an agent, adding hooks, or stopping secret reads.

Works with any agent that supports SKILL.md skills.

What this skill can do

Runs commands on your computer

This is disclosed by the author in the skill's SKILL.md or README. Expected for a coding skill.

Found in 3 places.

skills/playbooks/hooks-and-guardrails/references/claude-code-settings.md, line 90Setting `args` puts the hook in exec form with no shell, so the script path needs no quoting and `args[0]` reaches `stop-gate.sh` as one argument. `Bash(curl *)
skills/playbooks/hooks-and-guardrails/references/deny-rules-and-modes.md, line 47| `Bash(curl *)` | `curl ...` as written | `/usr/bin/curl`, `sh -c 'curl ...'`, option and variable variants |
skills/playbooks/hooks-and-guardrails/scripts/stop-gate.sh, line 27output="$(bash -c "$test_cmd" 2>&1)"

Reads your saved credentials, such as SSH keys or .env files

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

Found in 7 places.

skills/playbooks/hooks-and-guardrails/references/deny-rules-and-modes.md, line 35| `sandbox.filesystem.denyRead` | Blocks shell processes from reading a path, for example `["~/.aws", "~/.ssh"]` |
skills/playbooks/hooks-and-guardrails/scripts/test-hooks.sh, line 63expect_exit "read ssh private key is blocked" 2 "$S" "$(pre Read '{"file_path":"/home/u/.ssh/id_ed25519"}')"
skills/playbooks/hooks-and-guardrails/scripts/test-hooks.sh, line 64expect_exit "read aws credentials is blocked" 2 "$S" "$(pre Read '{"file_path":"/home/u/.aws/credentials"}')"

Show 4 more

skills/playbooks/hooks-and-guardrails/scripts/test-hooks.sh, line 75expect_exit "bash cat .env is blocked" 2 "$S" "$(pre Bash '{"command":"cat .env"}')"
skills/playbooks/hooks-and-guardrails/scripts/test-hooks.sh, line 76expect_exit "bash cat nested .env.production is blocked" 2 "$S" "$(pre Bash '{"command":"cat ./config/.env.production | head"}')"
skills/playbooks/hooks-and-guardrails/scripts/test-hooks.sh, line 77expect_exit "bash source .env is blocked" 2 "$S" "$(pre Bash '{"command":"set -a; source .env; set +a"}')"
skills/playbooks/hooks-and-guardrails/scripts/test-hooks.sh, line 78expect_exit "bash ls ~/.ssh is blocked" 2 "$S" "$(pre Bash '{"command":"ls ~/.ssh"}')"

Sends data to these websites: example.com

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

Found in 1 place.

skills/playbooks/hooks-and-guardrails/scripts/test-hooks.sh, line 89expect_exit "other tools are ignored" 0 "$S" "$(pre WebFetch '{"url":"https://example.com/.env"}')"

Install

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

if [ -e ~/.agents/skills/'hooks-and-guardrails' ] || [ -L ~/.agents/skills/'hooks-and-guardrails' ]; then echo 'A skill folder named hooks-and-guardrails already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/krzysztofsurdy/code-virtuoso' "$d" && git -C "$d" checkout --quiet '70f43af39f2c4f9101e0c1e0ecaec7df543d35c8' -- 'skills/playbooks/hooks-and-guardrails' && mkdir -p ~/.agents/skills && cp -R "$d"/'skills/playbooks/hooks-and-guardrails' ~/.agents/skills/'hooks-and-guardrails' && 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/'hooks-and-guardrails' ~/.claude/skills/'hooks-and-guardrails' (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
2026-11-07	`70f43af`	84