agentbox-info

agentbox-info is a skill for Claude Code from madarco/agentbox. It costs 79 tokens per session (6,788 once invoked), scanned A, original, MIT.

A host-side tool for creating isolated sandboxes, called boxes, where coding agents can run. Boxes can be local containers or supported cloud environments, with a relay handling host-side operations such as pushing commits.

In plain words
What is it for?
Use it to create boxes, run Claude Code, Codex, or OpenCode in parallel or in the background, attach to running boxes, and safely push commits.
Why use it?
It lets agents work separately from the host machine and from one another while preserving a controlled way to share changes.

Skill for Claude Code

Written for Claude Code: user-invocable in frontmatter. Also seen: names the ExitPlanMode tool; mentions Claude Code; mentions Codex.

Part of the agentbox plugin — 4 skills, 1 command shipped together

Good fit Use it to create boxes, run Claude Code, Codex, or OpenCode in parallel or in the background, attach to running boxes, and safely push commits.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/madarco/agentbox/agentbox-info
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.

Any agent
npx skills add madarco/agentbox --skill agentbox-info
Clone the repo
git clone --depth 1 https://github.com/madarco/agentbox

Made for: Claude Code.

Or install agentbox, the plugin that ships this one along with the rest of its 4 skills, 1 command.

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 agentbox-info

README.md
[![agentmods](https://agentmods.dev/badge/skills/madarco/agentbox/agentbox-info/github.svg)](https://agentmods.dev/skills/madarco/agentbox/agentbox-info)
Your own site
<a href="https://agentmods.dev/skills/madarco/agentbox/agentbox-info"><img src="https://agentmods.dev/badge/skills/madarco/agentbox/agentbox-info/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for agentbox-info

Your own site · 80×15
<a href="https://agentmods.dev/skills/madarco/agentbox/agentbox-info"><img src="https://agentmods.dev/badge/skills/madarco/agentbox/agentbox-info.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 79 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 6,788 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 5 findings, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • medium Excessive Agency · line 71
    Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.
    Fix: Add human-in-the-loop confirmation for destructive, irreversible, or high-impact operations. Never auto-execute commands that modify files, send data, or alter system state.
  • medium Rogue Agent · line 151
    Skill establishes unauthorized persistence across sessions via cron jobs, startup scripts, or state files. Session persistence allows an attacker to maintain access beyond the current interaction.
    Fix: Remove any persistence mechanisms (cron jobs, startup scripts, state files). Skills should not maintain state across sessions without explicit user consent.
  • medium Excessive Agency · line 172
    Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.
    Fix: Add human-in-the-loop confirmation for destructive, irreversible, or high-impact operations. Never auto-execute commands that modify files, send data, or alter system state.
  • medium Excessive Agency · line 212
    Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.
    Fix: Add human-in-the-loop confirmation for destructive, irreversible, or high-impact operations. Never auto-execute commands that modify files, send data, or alter system state.
  • medium MCP Rug Pull · line 284
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
How audits are shown
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 5.1 $0.00079 $0.06788
Opus 5.5 $0.00032 $0.02715
Sonnet 5.5 $0.00016 $0.01358
Haiku 4.5 $0.00008 $0.00679

Measured 28d ago against content hash 508f88f1c4d3, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

agentbox-info scanned grade A with 1 finding 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 28d ago.

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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

**The id is a safety token — inspect, then approve that exact id.** `approve <id>` answers the specific prompt you listed; if a *different* prompt has since taken its place, the recomputed id won't match and the approve
apps/cli/share/host-skills/agentbox-info/SKILL.md · 343 lines

How it starts

The opening of the file, as written. The whole thing — 343 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AgentBox (host-side)

You are operating on the user's host machine (laptop / dev workstation), not inside a box. Use the agentbox CLI to provision isolated sandboxes for coding agents and to attach to them.

If you find yourself inside a box (/workspace exists and AGENTBOX_RELAY_URL is set in the env), this is the wrong skill — use the in-box /agentbox-setup skill instead.

What AgentBox is, in one paragraph

AgentBox spins up one isolated sandbox per agent run — a local Docker container (default), a Hetzner VPS (--provider hetzner), a Vercel Sandbox (--provider vercel), an E2B microVM (--provider e2b), or a Daytona cloud sandbox (--provider daytona, partial support). Each box has its own /workspace, but the host's .git/ is shared, so commits made inside the box land on the host immediately. The agent inside the box has no host credentials — git push, opening URLs in the host browser, capturing checkpoints, and all other host-side operations flow through a small host process called the relay that runs alongside the CLI.

The two starting commands

agentbox create

Provision a box and stop. The box exists and is ready, but nothing is launched inside it.

agentbox create                       # docker, auto-named after the workspace
agentbox create -n review             # docker, friendly name
agentbox create --provider hetzner    # cloud VPS (requires `agentbox prepare --provider hetzner` once)
agentbox create --attach              # drop into a shell inside the box after create

Useful flags: -n <name> (friendly box name), --provider docker|daytona|hetzner|vercel|e2b, --attach, -w <path> (workspace to mount; defaults to cwd), --snapshot <ref> (start from a checkpoint).

Non-docker providers require a one-time agentbox prepare --provider <name> to bake the base image / snapshot.

agentbox claude

Provision (same as create) and launch Claude Code inside the box, in a detachable tmux session. This is the main entry point most users want.

Read the full file on GitHub · 343 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. 28d ago Changed · +37 lines 508f88f1c4d3
  2. 1mo ago Changed · +21 lines f2d5e5980379
  3. 1mo ago Changed cb3046a4668a
  4. 1mo ago Changed d9d609d98a9a
  5. 1mo ago First seen · 285 lines · 79 tokens per session scan A b511fb4022f9

Subscribe to this mod's changes

agentbox-info is a skill published in the GitHub repository madarco/agentbox (538 stars, last pushed 13d ago), licensed MIT. It adds 79 tokens to every session and 6,788 once invoked, about $0.0003 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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