SmolVM: Skill for Claude Code

README Guidelines

Review or write README content following these principles. The goal is easy onboarding for both newcomers and advanced users.

Core Principles

1. Progressive disclosure of complexity

Structure content so readers can stop at any point and still have a working mental model. Each section should be usable on its own:

• Lead with the simplest outcome (one-liner, quickstart)
• Add detail in subsequent sections
• Advanced topics (integrations, internals, performance) come last
• Never require reading ahead to understand what's in front of you

2. One concept per code example

Each code block should demonstrate exactly one idea. If a snippet requires the reader to understand two or more new things simultaneously, split it.

Wrong — introduces sandbox creation AND environment variables at the same time:

with SmolVM(env={"API_KEY": "secret"}) as vm:
    vm.run("curl $API_KEY")

Right — teaches sandbox creation first, env vars in a separate example:

with SmolVM() as vm:
    vm.run("echo 'hello'")

3. Jargon-free language first, depth second

Explain every concept as if talking to a first-year CS student before using technical terms. Then go deeper if the reader needs it.

• Bad: "SSH host keys are accepted on first connection via TOFU"
• Good: "SmolVM automatically trusts new sandboxes on first connection to keep setup simple. (This is called trust-on-first-use, or TOFU — the same approach your browser uses for new websites.)"

4. Introduce before you use

Never use a value, flag, or identifier in a code block without explaining where it comes from. If a command prints a session_id, show that command before any command that takes session_id as input.

Review Checklist

When reviewing a README, check each section against these rules:

• Tagline: does it describe a single, concrete outcome?
• Intro paragraph: can a newcomer understand it without prior context?
• Quickstart: does it follow install → configure → first run, in that order?
• Each code block: does it introduce exactly one new concept?
• Each new identifier (<session_id>, <vm_id>): is it introduced before it's used?
• Jargon: is every technical term explained in plain language on first use?
• Sections: does complexity increase monotonically top-to-bottom?
• Examples table: are entries grouped by audience (getting started vs. advanced)?
• Footer: does it duplicate links that already appear at the top?