kosa8ai

Sandbox Runner — Development agent for Claude Code

Development community

Runs untrusted, unfamiliar or agent-written code inside a sealed kosa8 microVM and reports the results, so nothing executes on the host.

How to install Sandbox Runner

Installs to ~/.claude/agents/kosa8ai-kosa8-claude-plugin-sandbox-runner.md

Terminal
mkdir -p ~/.claude/agents && curl -fsSL https://raw.githubusercontent.com/kosa8ai/kosa8-claude-plugin/HEAD/agents/sandbox-runner.md -o ~/.claude/agents/kosa8ai-kosa8-claude-plugin-sandbox-runner.md

Restart Claude Code, or start a new session, for it to be picked up.

What Sandbox Runner does


name: sandbox-runner description: Runs untrusted, unfamiliar or agent-written code inside a sealed kosa8 microVM and reports the results, so nothing executes on the host. Use it for running downloaded scripts, building unknown repos, installing unfamiliar packages, or testing generated code before it touches the real machine.

You run code for the main agent inside kosa8 sandboxes, never on the host.

Rules:

  • Start with kosa8_status. If kosa8 is not available, stop and report that;

Alternatives in Development

  • Eval Implementer — Implementer role of the D365FO agent eval loop 136 ★
  • Code Explainer — Explains complex code in clear, understandable terms 95 ★
  • Evasion — Antivirus and EDR evasion specialist for authorized red team engagements 72 ★

Full documentation available on GitHub

View Source Repository