sandbox-status

sandbox-status is a command for coding agents from FlorianBruniaux/claude-code-plugins. It costs 13 tokens per session (1,401 once invoked), scanned C, original, MIT.

A command that shows whether the native sandbox is available, how it is configured, and which recent actions it blocked.

In plain words
What is it for?
It is for inspecting sandbox support, filesystem and network rules, excluded commands, and recent violations.
Why use it?
It makes security boundaries and blocked access attempts visible when you need to understand the agent's operating limits.

Command

Part of the security-suite plugin — 2 skills, 5 commands, 2 agents 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 commands/florianbruniaux/claude-code-plugins/sandbox-status
Clone the repo
git clone --depth 1 https://github.com/FlorianBruniaux/claude-code-plugins

Or install security-suite, the plugin that ships this one along with the rest of its 2 skills, 5 commands, 2 agents.

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 sandbox-status

README.md
[![agentmods](https://agentmods.dev/badge/commands/florianbruniaux/claude-code-plugins/sandbox-status.svg)](https://agentmods.dev/commands/florianbruniaux/claude-code-plugins/sandbox-status)
Your own site
<a href="https://agentmods.dev/commands/florianbruniaux/claude-code-plugins/sandbox-status"><img src="https://agentmods.dev/badge/commands/florianbruniaux/claude-code-plugins/sandbox-status.svg" alt="Measured on agentmods" height="20"></a>
Per session 13 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,401 The whole file, excluding the scripts and references it only reads on demand.
Security scan C 2 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 $0.00013 $0.01401
Opus 5 $0.00006 $0.00700
Sonnet 5 $0.00003 $0.00280
Haiku 4.5 $0.00001 $0.00140

Measured today against content hash 49b1c0788dee, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade C, and why

sandbox-status scanned grade C with 2 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 today.

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.

Asks for rootmediumPrivilege escalation

A mod that escalates privileges can change anything on the machine, not only the project.

echo " Install: sudo apt-get install bubblewrap socat"

Reads agent configuration directoriesmediumAgent snooping

.claude/, .codex/, .gemini/ hold keys, settings and other credentials a mod has no legitimate need for.

elif [ -f ~/.claude/settings.json ]; then
plugins/security-suite/commands/sandbox-status.md · 178 lines

How it starts

The opening of the file, as written. The whole thing — 178 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Sandbox Status Command

Inspect the native Claude Code sandbox state, active configuration, and security events.

Usage

/sandbox-status

What It Does

  1. Check sandbox availability

    • Verify OS primitives installed (bubblewrap on Linux, Seatbelt on macOS)
    • Display platform support status
  2. Show active configuration

    • Sandbox mode (Auto-allow vs Regular permissions)
    • Filesystem policies (allowed writes, denied reads)
    • Network policies (domain allowlist/denylist)
    • Excluded commands
  3. List recent sandbox violations

    • Blocked filesystem access attempts
    • Blocked network connections
    • Escape hatch invocations (dangerouslyDisableSandbox)

Implementation

#!/bin/bash

echo "=== Native Sandbox Status ==="
echo

# 1. Platform Check
echo "Platform:"
case "$OSTYPE" in
  darwin*)
    echo "  ✅ macOS (Seatbelt built-in)"
    ;;
  linux*)
    if which bubblewrap >/dev/null 2>&1; then
      echo "  ✅ Linux (bubblewrap installed)"
      bubblewrap --version 2>/dev/null | head -1
    else
      echo "  ❌ Linux (bubblewrap NOT installed)"
      echo "     Install: sudo apt-get install bubblewrap socat"
    fi
    if which socat >/dev/null 2>&1; then
      echo "  ✅ socat installed"
    else
      echo "  ❌ socat NOT installed"
    fi
    ;;
  *)
    echo "  ❌ Unsupported platform: $OSTYPE"
    ;;
esac
echo

# 2. Configuration
echo "Configuration (from settings.json):"
if [ -f .claude/settings.json ]; then
  CONFIG=".claude/settings.json"
elif [ -f ~/.claude/settings.json ]; then
  CONFIG="~/.claude/settings.json"
else
  echo "  ⚠️  No settings.json found"
  CONFIG=""
fi

if [ -n "$CONFIG" ]; then
  echo "  Source: $CONFIG"

  # Auto-allow mode
  AUTO_ALLOW=$(jq -r '.sandbox.autoAllowMode // "not set"' "$CONFIG" 2>/dev/null)
  echo "  Auto-allow: $AUTO_ALLOW"

  # Allowed write paths
  WRITE_PATHS=$(jq -r '.sandbox.filesystem.allowedWritePaths[]? // empty' "$CONFIG" 2>/dev/null | tr '\n' ', ')
  echo "  Allowed writes: ${WRITE_PATHS:-not set}"

  # Denied read paths
  DENIED_READS=$(jq -r '.sandbox.filesystem.deniedReadPaths[]? // empty' "$CONFIG" 2>/dev/null | tr '\n' ', ')
  echo "  Denied reads: ${DENIED_READS:-not set}"

  # Network policy
  NET_POLICY=$(jq -r '.sandbox.network.policy // "not set"' "$CONFIG" 2>/dev/null)
  echo "  Network policy: $NET_POLICY"

  # Allowed domains
  DOMAINS=$(jq -r '.sandbox.network.allowedDomains[]? // empty' "$CONFIG" 2>/dev/null | head -3 | tr '\n' ', ')
  DOMAINS_COUNT=$(jq -r '.sandbox.network.allowedDomains | length' "$CONFIG" 2>/dev/null)
  if [ -n "$DOMAINS" ]; then
    echo "  Allowed domains: $DOMAINS... ($DOMAINS_COUNT total)"
  else
    echo "  Allowed domains: not set"
  fi

  # Excluded commands
  EXCLUDED=$(jq -r '.sandbox.excludedCommands[]? // empty' "$CONFIG" 2>/dev/null | tr '\n' ', ')
  echo "  Excluded commands: ${EXCLUDED:-not set}"
fi
echo

# 3. Recent Violations (placeholder - actual implementation would read Claude Code logs)
echo "Recent sandbox violations:"
echo "  ℹ️  Log inspection not yet implemented"
echo "  Tip: Check Claude Code session logs for sandbox violation notifications"
echo

# 4. Open-Source Runtime
echo "Open-Source Runtime:"
if which npx >/dev/null 2>&1; then
  echo "  ✅ npx available - can use @anthropic-ai/sandbox-runtime"
  echo "  Usage: npx @anthropic-ai/sandbox-runtime <command>"
else
  echo "  ⚠️  npx not found (install Node.js)"
fi
echo

# 5. Documentation
echo "Documentation:"
echo "  Guide: guide/sandbox-native.md"
echo "  Official: https://code.claude.com/docs/en/sandboxing"
echo "  Runtime: https://github.com/anthropic-experimental/sandbox-runtime"

Read the full file on GitHub · 178 lines

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. today First seen · 178 lines · 13 tokens per session scan C 49b1c0788dee

Subscribe to this mod's changes

sandbox-status is a command published in the GitHub repository FlorianBruniaux/claude-code-plugins (40 stars, last pushed 3d ago), licensed MIT. It adds 13 tokens to every session and 1,401 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it C with 2 findings (asks for root, reads agent configuration directories). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-04.