crabbox

crabbox is a skill for Claude Code, Codex from openclaw/agent-skills. It costs 39 tokens per session (3,303 once invoked), scanned A, original, MIT.

A guide for proving software works on clean or remote machines across Linux, macOS, Windows, and Windows Subsystem for Linux (WSL2). It covers isolated test environments, provider routing, diagnostics, and cleanup.

In plain words
What is it for?
Use it to run focused or full checks in containers or remote environments, test installations, capture results, and report the provider and run details.
Why use it?
It helps reveal failures that may be hidden by a developer’s local setup and keeps untrusted test code isolated.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: mentions AGENTS.md.

Good fit Use it to run focused or full checks in containers or remote…

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Install with agentmods
npx agentmods add skills/openclaw/agent-skills/crabbox
About the project

OpenClaw Agent Skills is a shared repository of reusable workflows for coding agents working on OpenClaw projects. It provides skills for activities such as code-review closeout, behavior validation, session handoff, remote testing, transcript provenance, and viewing agent sessions. The catalogue entries are the project’s distributed skills and instruction.

openclaw/agent-skills · 1,077 stars · on GitHub

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 openclaw/agent-skills --skill crabbox
Clone the repo
git clone --depth 1 https://github.com/openclaw/agent-skills

Made for: Claude Code, Codex.

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 crabbox

README.md
[![agentmods](https://agentmods.dev/badge/skills/openclaw/agent-skills/crabbox.svg)](https://agentmods.dev/skills/openclaw/agent-skills/crabbox)
Your own site
<a href="https://agentmods.dev/skills/openclaw/agent-skills/crabbox"><img src="https://agentmods.dev/badge/skills/openclaw/agent-skills/crabbox.svg" alt="Measured on agentmods" height="20"></a>
Per session 39 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,303 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
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 $0.00039 $0.03303
Opus 5 $0.00019 $0.01651
Sonnet 5 $0.00008 $0.00661
Haiku 4.5 $0.00004 $0.00330

Measured 7d ago against content hash f241f11e376a, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

crabbox scanned grade A with 0 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 7d 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.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/crabbox/SKILL.md · 367 lines

How it starts

The opening of the file, as written. The whole thing — 367 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Crabbox

Remote and clean-machine proof. Packages. Docker. Live providers. Desktop. Cross-OS. The consumer repository owns when its validation needs a remote environment; Crabbox availability alone is not a reason to offload local work.

Backends:

  • blacksmith-testbox: trusted maintainer source. Prepared CI. tbx_....
  • aws: direct brokered Crabbox. Fresh PRs. Custom sync/env/capture. cbx_....
  • local-container: Docker fallback. Not remote proof.
  • ssh: existing operator host. macOS/Windows/WSL2.

Always report provider, id, run URL, command, result. Never call Testbox “AWS Crabbox.”

Repository Contract

This canonical skill owns portable Crabbox policy and CLI operations only. Consumer-specific setup belongs in that repository's AGENTS.md, package scripts, hydration workflow, or another file outside the synchronized skill.

Resolve these placeholders from trusted repository instructions before running an example:

  • <check-command>: the repository's focused or broad validation command.
  • <install-and-check-command>: its clean-container install plus validation.
  • <trusted-bootstrap-script>: a maintainer-reviewed untrusted-PR bootstrap stored outside the untrusted checkout.
  • <container-image> and <owner/repo#number>: the consumer's runtime and PR.

Never invent a missing command or copy a command from another consumer.

Authorization and Isolation

Routine use of the configured Crabbox/Testbox environment is part of completing the requested task; do not ask for separate approval. This includes creating, reusing and stopping task-owned leases, temporary state, and clean checkouts or worktrees needed for proof or a task-required Crabbox repair.

A dirty, missing or occupied checkout is a reason to use a clean task-owned checkout or worktree, not a permission blocker. Preserve existing checkouts, branches and unrelated edits. Keep source-trust, credential, production-access, budget and publication boundaries; routine-use approval does not waive them.

Read the full file on GitHub · 367 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. 7d ago First seen · 367 lines · 39 tokens per session scan A f241f11e376a

Subscribe to this mod's changes

crabbox is a skill published in the GitHub repository openclaw/agent-skills (1,077 stars, last pushed today), licensed MIT. It adds 39 tokens to every session and 3,303 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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