agentmods.dev

microsandbox: Skill for Claude Code

.agents/skills/microsandbox-docs/SKILL.md

microsandbox-docs is a skill for Claude Code, Codex from superradcompany/microsandbox. It costs 39 tokens per session (448 once invoked), scanned A, original, Apache-2.0.

A documentation-editing guide for the Microsandbox product, command-line tool, and software development kits. It explains how to verify behavior and follow the repository’s Mintlify documentation style.

In plain words
What is it for?
Use it when changing files under microsandbox/docs, especially for feature references, CLI flags, SDK examples, limits, and network or secret-policy behavior.
Why use it?
It helps prevent documentation from describing unsupported options, incorrect version availability, or incomplete examples.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: installed under .agents/ (shared by several agents); mentions AGENTS.md.

This is superradcompany/microsandbox's own configuration. It tells Claude Code and Codex how to work on microsandbox itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything microsandbox configures →

not rated 9.0krepo +66 yesterday A scan 39 tokens original Apache-2.0
View source ↗ superradcompany/microsandbox docs.microsandbox.dev
About the project

Microsandbox is a runtime and library that runs untrusted workloads inside small virtual machines (microVMs), providing hardware-level isolation while supporting standard container images. It is for AI agents, user code, plugins, CI jobs, development environments, scrapers, and automation, and its catalogue instruction helps agents create and use these sandboxes.

superradcompany/microsandbox · 8,956 stars · on GitHub · docs.microsandbox.dev

Reuse

Borrowing it

Nothing to install: this file belongs to superradcompany/microsandbox. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/superradcompany/microsandbox/main/.agents/skills/microsandbox-docs/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/superradcompany/microsandbox

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 microsandbox-docs

README.md
[![agentmods](https://agentmods.dev/badge/skills/superradcompany/microsandbox/microsandbox-docs/github.svg)](https://agentmods.dev/skills/superradcompany/microsandbox/microsandbox-docs)
Your own site
<a href="https://agentmods.dev/skills/superradcompany/microsandbox/microsandbox-docs"><img src="https://agentmods.dev/badge/skills/superradcompany/microsandbox/microsandbox-docs/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 microsandbox-docs

Your own site · 80×15
<a href="https://agentmods.dev/skills/superradcompany/microsandbox/microsandbox-docs"><img src="https://agentmods.dev/badge/skills/superradcompany/microsandbox/microsandbox-docs.svg" alt="Reviewed on agentmods" width="80" 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 448 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 $0.00448
Opus 5.5 $0.00016 $0.00179
Sonnet 5.5 $0.00008 $0.00090
Haiku 4.5 $0.00004 $0.00045

Measured 21d ago against content hash 6f3714215041, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

microsandbox-docs 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 21d 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/microsandbox-docs/SKILL.md · 27 lines

How it starts

The opening of the file, as written. The whole thing — 27 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Microsandbox docs

Follow the repository's AGENTS.md for contribution rules and SDK reference structure. Read the affected pages and check the working tree before editing. If a target branch is specified, start from its latest commit and preserve unrelated branch changes.

Verify the feature

  • Check implementation, configuration schema, CLI flags, and supported SDKs before naming an option or writing an example. Distinguish per-secret settings from sandbox-wide defaults and secret-policy denials from ordinary network denials.
  • Check the published tag or release before attaching a version pill. A merged change is not evidence that a tagged version contains it. State local-only or cloud limitations only where they affect the documented workflow.
  • Make examples internally complete. When an example expects a JSON HTTP denial response, show the response enablement, JSON format, and applicable message setting together, even if some are current defaults.

Write the page

  • Lead with what the reader can do and the shortest useful example. Put the main code sample on the page; use accordions for limits and secondary details.
  • Use short headings that name the operation. Keep violation actions, host permissions such as placeholder passthrough, and response-message configuration conceptually separate.
  • Use CodeGroup for supported language examples when a workflow spans SDKs. Show a CLI example only when an equivalent flag or command exists. Put sandbox.yml in a YAML configuration section instead of presenting it as a CLI command.
  • Keep prose independent of language-specific syntax when possible. Put language or CLI details beside their example or in the relevant reference page. Preserve meaningful edge cases without repeating them across pages.

Validate and deliver

  • Run python3 scripts/check-docs-language-order.py and git diff --check. Parse changed YAML examples, check links and anchors, and load the affected pages in the Mintlify preview when available.
  • Report the changed pages, checks, and any behavior or release ambiguity. Follow the user's requested target branch and publishing route.

Read the full file on GitHub · 27 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. 21d ago First seen · 27 lines · 39 tokens per session scan A 6f3714215041

Subscribe to this mod's changes

microsandbox-docs is a skill published in the GitHub repository superradcompany/microsandbox (8,956 stars, last pushed yesterday), licensed Apache-2.0. It adds 39 tokens to every session and 448 once invoked, about $0.0002 per session on Opus 5.5. 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 2026-10-17.

Writing and docsagentsdockerlinuxmacossandboxvirtualization
Related

microsandbox-docs compared with skills from other repositories

microsandbox-docs next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
microsandbox-docssuperradcompany/microsandboxSkill9.0kyesterdayApache-2.0A39Claude Code, Codex
dotfiles-bootstrapsebastienrousseau/dotfilesSkill81yesterdayApache-2.0A89Claude Code, Codex
avatar-contribution-prkhromov/codebaySkill138d agoMITA0Claude Code
docker-sandboxjoelhooks/joelclawSkill65yesterdaynoneA74Codex
frontend-designkhromov/codebaySkill138d agoMITA43Claude Code
cua-volumetrycua/cuaSkill32kyesterdayMITA114Claude Code, Codex
hex-personal-commandsanomalyco/hexSkill5.3kyesterdayMITA42Claude Code, Codex