crabbox

A remote Linux testing tool for ClawBench, used to validate code and agent workflows in environments similar to continuous integration systems.

In plain words
What is it for?
Use it to sync a repository to a remote test machine, run test or build jobs, inspect logs and caches, work with configured providers and secrets, and clean up leased test environments.
Why use it?
It provides a controlled place to run broad tests, package and build checks, benchmark runs, and other validation that may be difficult or slow to reproduce locally.

Skill for Claude CodeCodex

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

Made for: Claude Code, Codex.

Per session 36 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,849 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 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 $0.00036 $0.02849
Opus 5 $0.00018 $0.01425
Sonnet 5 $0.00007 $0.00570
Haiku 4.5 $0.00004 $0.00285

Measured 2d ago against content hash 7d116d8c3998, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, 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 2d 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.

.agents/skills/crabbox/SKILL.md · 318 lines

How it starts

The opening of the file, as written. The whole thing — 318 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Crabbox

Use Crabbox when ClawBench needs remote Linux proof for CI-parity checks, broad Python suites, package/build lanes, provider/HF secrets, hydrated agent dotfiles, benchmark sweeps, warmed reusable boxes, sync timing, logs/results, cache inspection, or lease cleanup.

Default backend: blacksmith-testbox. The separate blacksmith-testbox skill has been removed; this skill owns both the normal Crabbox path and the direct Blacksmith fallback playbook.

First Checks

  • Run from the repo root. Crabbox sync mirrors the current checkout.
  • Check the wrapper and provider support before remote work:
command -v crabbox
../crabbox/bin/crabbox --version
crabbox run --provider blacksmith-testbox --help | sed -n '1,140p'
  • Prefer the sibling openclaw/crabbox checkout at ../crabbox/bin/crabbox when present. The user PATH shim can be stale.
  • Check .crabbox.yaml for repo-owned AWS defaults, but override the provider explicitly for normal maintainer validation. Even if config still says AWS, broad ClawBench proof should normally pass --provider blacksmith-testbox.
  • Prefer local targeted tests for tight edit loops. Broad suites, package checks, Docker/container sweeps, live/provider lanes, and benchmark sweeps belong remote.
  • Do not move broad gates back onto the laptop just because Testbox is queued or capacity is constrained. Keep targeted local edit-loop checks narrow, leave the remote lane queued, or report the capacity blocker.
  • For live/provider bugs, check keys on the local Mac before downgrading to mocks. Source local ~/.profile and test only presence/length. If Crabbox does not already have the key, copy only the exact needed key into the remote process environment for that one command. Do not print it, sync it as a repo file, or leave it in remote shell history or logs.

Default Blacksmith Backend

Use this for python -m pytest -q, full Ruff lint, Docker/container sweeps, package/build checks, provider/HF lanes, or anything likely to fan out beyond a small targeted test.

Read the full file on GitHub · 318 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. 2d ago First seen · 318 lines · 36 tokens per session scan A 7d116d8c3998

Subscribe to this mod's changes

crabbox is a skill published in the GitHub repository openclaw/shellbench (138 stars, last pushed 4d ago), licensed MIT. It adds 36 tokens to every session and 2,849 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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