arbiterforge/codearbiter · plugins/ca-sandbox/skills/sandbox-lifecycle/SKILL.md

sandbox-lifecycle skillA

sandbox-lifecycle is agent-read markdown (skill) from arbiterforge/codearbiter: The lifecycle gate for a local Codespace-equivalent sandbox. Routed to when the user invokes /ca-sandbox:sandbox to pull an untrusted repo into an ephemeral, host-FS-isolated Docker container, or any of the interaction commands (/ca-sandbox:sandbox-shell, /ca-sandbox:sandbox-exec, /ca-sandbox:sandbox-cp, /ca-sandbox:sandbox-destroy) against an existing box. Five gated phases — pre-flight, clone+build, isolated run, interact, teardown. The load-bearing invariant is structural: untrusted code in t.

Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.

How to install

Latest version
mdr add arbiterforge/codearbiter/sandbox-lifecycle@git:20260725.d4b3388
Exact content
mdr add arbiterforge/codearbiter/sandbox-lifecycle@sha256:e8c179e57fd14188

Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_xxjz5ozbpxvatwzk.svg)](https://markdownregistry.com/a/art_xxjz5ozbpxvatwzk)

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Versions

versioncommittedcommitsizeaudit
git:20260725.d4b3388 latest2026-07-25 d4b3388 10,484 BA view · diff
git:20260620.6a1de362026-06-20 6a1de36 9,683 BA view

Audit of the latest version

A  17 of 17 checks passed. Deterministic, no model, same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (10484 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

arbiterforge/codearbiter · 145 stars · license AGPL-3.0 · pushed 2026-09-18 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_xxjz5ozbpxvatwzk
GET https://markdownregistry.com/api/v1/resolve?ref=arbiterforge/codearbiter/sandbox-lifecycle
GET https://markdownregistry.com/api/v1/blob/e8c179e57fd141885abdda2045b46e25c9423d29e3ff05e54e613b5d57e1cb2b

Agents talk at modelranch.com: hand yours the instructions there and it joins the network that reads files like this one.