Agent skill

Code Validation Sandbox

by aiskillstore in aiskillstore/marketplace

Validate code examples across the 4-Layer Teaching Method with intelligent strategy selection.

No licenceAuto-check passed

Install Code Validation Sandbox

skills CLI
$ npx skills add aiskillstore/marketplace --skill code-validation-sandbox -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install aiskillstore/marketplace code-validation-sandbox --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/92bilal26/code-validation-sandbox .claude/skills/code-validation-sandbox && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
code-validation-sandbox
GitHub stars
430
Token cost
~1.5k tokens
SKILL.md length
355 words
Files
9 (incl. scripts)
Skills in repo
1,108
Repo updated
First seen
Licence
None found

At a glance

Validate code examples across the 4-Layer Teaching Method with intelligent strategy selection.

  • Works in 3 steps: What layer is this content? → What language ecosystem? → What's the error severity?
  • Validating Python/Node/Rust code in book chapters
  • SKILL.md covers Quick Start, Persona, Analysis Questions and Principles, plus 3 more sections
  • Runs Shell and Python scripts from its folder; calls python3, cargo and docker-compose

What it does

Code Validation Sandbox is an agent skill from aiskillstore/marketplace. Validate code examples across the 4-Layer Teaching Method with intelligent strategy selection. Use when validating Python/Node/Rust code in book chapters. NOT for production deployment testing.

Its SKILL.md is about 1.5k tokens, which your agent loads only when the skill is triggered. The skill folder holds 9 other files, including scripts (for example `README.md`, `metadata.yaml` and `scripts/detect-context.sh`).

It works with Python and Rust. The repository describes itself as: Security-audited skills for Claude, Codex & Claude Code. One-click install, quality verified.

When your agent uses it

  • Validating Python/Node/Rust code in book chapters

Example prompts

  • “/code-validation-sandbox”

Requirements

  • Python 3
  • Node.js
  • A Bash shell
  • Docker

Workflow steps

3 steps, taken from the step headings in SKILL.md.

  1. What layer is this content?
  2. What language ecosystem?
  3. What's the error severity?

What it can do on your machine

Read from SKILL.md and the folder at commit ad8daf7. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    Ships 5 files in scripts/ (Shell and Python), which the agent can run.

    Shell commands in SKILL.md call:

    • python3
    • cargo
    • docker-compose
    • tsc
    • python
    • mypy
    • pnpm
    • node
    • docker

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md. Its commands use pnpm and docker, which can reach the network depending on how they are called.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Code Validation Sandbox loads about 1.5k tokens when it runs. Until then it costs about 54 tokens; SKILL.md has 355 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~54
When it runs · the whole SKILL.md, loaded when a task matches
~1.5k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); the scripts in this folder are not scanned.

SKILL.md

Without a licence we can't republish the file, so here is its outline and opening line. It has 355 words (~1,538 tokens).

“You are a validation intelligence architect who selects validation depth based on pedagogical context, not a script executor running all code blindly.”

— opening of SKILL.md by aiskillstore
name
code-validation-sandbox
category
validation
version
3.0.0

Read the full SKILL.md on GitHub

Files

SKILL.md and 8 other files (scripts) in skills/92bilal26/code-validation-sandbox of aiskillstore/marketplace.

  • SKILL.md
  • README.md
  • metadata.yaml
  • scripts/detect-context.sh
  • scripts/setup-sandbox.sh
  • scripts/validate-python.sh
  • scripts/validate.sh
  • scripts/verify.py
  • skill-report.json

Open the folder on GitHubat commit ad8daf7

Compare with similar skills

Code Validation Sandbox next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Code Validation Sandbox compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Code Validation Sandbox this skillaiskillstore/marketplace430—~1.5kAutomated safety check: PassNone
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Firecrawl Page Scrape Integrationfirecrawl/firecrawl190k1 repos~944Automated safety check: PassISC
Fory Releaseapache/fory4.6k—~2.9kAutomated safety check: PassApache-2.0
Apple Container Test RunnerRustPython/RustPython22k—~467Automated safety check: PassMIT
Release Skillsnexmoe/eve4213 repos~3.3kAutomated safety check: PassNone

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Works with

Questions about Code Validation Sandbox

What does Code Validation Sandbox do?

Validate code examples across the 4-Layer Teaching Method with intelligent strategy selection. Code Validation Sandbox is an agent skill from aiskillstore/marketplace. Validate code examples across the 4-Layer Teaching Method with intelligent strategy selection.

When should I use Code Validation Sandbox?

Code Validation Sandbox fits situations like: validating Python/Node/Rust code in book chapters.

How do I install Code Validation Sandbox in Claude Code?

Run `npx skills add aiskillstore/marketplace --skill code-validation-sandbox -a claude-code`. Or copy the skill folder (skills/92bilal26/code-validation-sandbox in aiskillstore/marketplace) into .claude/skills/code-validation-sandbox in your project. Claude Code loads it when a task matches its description.

How do I install Code Validation Sandbox in Codex?

Run `npx skills add aiskillstore/marketplace --skill code-validation-sandbox -a codex`. Or copy the skill folder (skills/92bilal26/code-validation-sandbox in aiskillstore/marketplace) into .agents/skills/code-validation-sandbox in your project. Codex loads it when a task matches its description.

Can I use Code Validation Sandbox in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add aiskillstore/marketplace --skill code-validation-sandbox -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/code-validation-sandbox, .gemini/skills/code-validation-sandbox, .github/skills/code-validation-sandbox and .opencode/skills/code-validation-sandbox in your project.

What does Code Validation Sandbox need to run?

Going by SKILL.md and its folder, Code Validation Sandbox needs a shell and Python for the scripts in its folder and the command-line tools its instructions call (python3, cargo, docker-compose, tsc, python and mypy). Our summary lists: Python 3; Node.js; A Bash shell; Docker.

Does Code Validation Sandbox access the network?

SKILL.md contains no URLs. Its commands use docker, which can reach the network depending on how they are called. This is read from the text; nothing was executed.

Is Code Validation Sandbox safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. The check reads SKILL.md only: the scripts in the folder are not scanned, so read them before running anything.

What licence does Code Validation Sandbox use?

No licence was found for Code Validation Sandbox or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.

How many tokens does Code Validation Sandbox use?

About 1.5k tokens (SKILL.md is roughly 6.2k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Code Validation Sandbox?

Skills that share tags, products or a category with Code Validation Sandbox: Update V8 Version (openinterpreter/openinterpreter, 69k stars), Firecrawl Page Scrape Integration (firecrawl/firecrawl, 190k stars), Fory Release (apache/fory, 4.6k stars) and Apple Container Test Runner (RustPython/RustPython, 22k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Code Validation Sandbox?

aiskillstore (a GitHub organization) maintains it in aiskillstore/marketplace, which has 430 GitHub stars. The repository holds 1,108 skills in this directory. The repository was last updated on October 7, 2026.

Source: aiskillstore/marketplace on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.