sandbox-service

sandbox-service is a skill for Claude Code, Codex from Lin-A1/skills-agent. It costs 44 tokens per session (875 once invoked), scanned A, original, no licence file.

A Docker-based service for running Python, Shell, or Bash code in an isolated environment with time and resource limits.

In plain words
What is it for?
Use it to execute untrusted or temporary code in a restricted sandbox.
Why use it?
It reduces the risk of running code directly on the main system and can stop tasks that use too much time or memory.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing.

Good fit Use it to execute untrusted or temporary code in a restricted sandbox.

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Install with agentmods
npx agentmods add skills/lin-a1/skills-agent/sandbox_service
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 Lin-A1/skills-agent --skill sandbox_service
Clone the repo
git clone --depth 1 https://github.com/Lin-A1/skills-agent

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 sandbox-service

README.md
[![agentmods](https://agentmods.dev/badge/skills/lin-a1/skills-agent/sandbox_service/github.svg)](https://agentmods.dev/skills/lin-a1/skills-agent/sandbox_service)
Your own site
<a href="https://agentmods.dev/skills/lin-a1/skills-agent/sandbox_service"><img src="https://agentmods.dev/badge/skills/lin-a1/skills-agent/sandbox_service/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 sandbox-service

Your own site · 80×15
<a href="https://agentmods.dev/skills/lin-a1/skills-agent/sandbox_service"><img src="https://agentmods.dev/badge/skills/lin-a1/skills-agent/sandbox_service.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 44 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 875 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 unknown 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 $0.00044 $0.00875
Opus 5 $0.00022 $0.00438
Sonnet 5 $0.00009 $0.00175
Haiku 4.5 $0.00004 $0.00088

Measured 11d ago against content hash 8df6490d5726, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

sandbox-service 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 11d ago.

The scan reads SKILL.md. This mod also ships 3 executable files (client.py, executor.py, server.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

services/sandbox_service/SKILL.md · 131 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

Files

What ships with it

4 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 11d ago First seen · 131 lines · 44 tokens per session scan A 8df6490d5726

Subscribe to this mod's changes

sandbox-service is a skill published in the GitHub repository Lin-A1/skills-agent (7 stars, last pushed 7mo ago), with no licence file. It adds 44 tokens to every session and 875 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 2026-08-31.

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