inkwell-agent-sandboxes-and-software-factory: Skill for Claude Code

.claude/skills/sssf-sandbox-orchestrator/SKILL.md

sssf-sandbox-orchestrator is a skill for Claude Code from disler/inkwell-agent-sandboxes-and-software-factory. It costs 116 tokens per session (2,811 once invoked), scanned A, original, MIT.

A workflow for mounting temporary virtual machines, running a software factory inside them, watching the work from outside, collecting its commits, and removing the machines when approved.

In plain words
What is it for?
Use it to run the software factory in one or more temporary sandboxes, expose a run in a browser, check its status, collect completed commits, or tear down a sandbox after human approval.
Why use it?
It keeps experimental factory runs separate from the host project and provides a repeatable way to monitor and clean them up. It uses the repository's prepared commands for each operation.

Skill for Claude Code

Written for Claude Code: argument-hint in frontmatter. Also seen: reads .claude/ paths; mentions Claude Code.

This is disler/inkwell-agent-sandboxes-and-software-factory's own configuration. It tells Claude Code how to work on inkwell-agent-sandboxes-and-software-factory 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 inkwell-agent-sandboxes-and-software-factory configures →

Reuse

Borrowing it

Nothing to install: this file belongs to disler/inkwell-agent-sandboxes-and-software-factory. 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/disler/inkwell-agent-sandboxes-and-software-factory/main/.claude/skills/sssf-sandbox-orchestrator/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/disler/inkwell-agent-sandboxes-and-software-factory

Made for: Claude Code.

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.

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README.md
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Your own site
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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.

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Your own site · 80×15
<a href="https://agentmods.dev/skills/disler/inkwell-agent-sandboxes-and-software-factory/sssf-sandbox-orchestrator"><img src="https://agentmods.dev/badge/skills/disler/inkwell-agent-sandboxes-and-software-factory/sssf-sandbox-orchestrator.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 116 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,811 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 3 findings, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • medium Excessive Agency · line 30
    Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.
    Fix: Add human-in-the-loop confirmation for destructive, irreversible, or high-impact operations. Never auto-execute commands that modify files, send data, or alter system state.
  • medium Agent Snooping · line 49
    Skill enumerates or reads other installed skills. Access to other skills' SKILL.md files or the skills directory reveals prompt instructions, capabilities, and secrets that should be invisible to peer skills.
    Fix: Remove all code or instructions that list or read other skills' files or directories. Skills should operate independently; cross-skill access is a privilege escalation.
  • medium Agent Snooping · line 50
    Skill enumerates or reads other installed skills. Access to other skills' SKILL.md files or the skills directory reveals prompt instructions, capabilities, and secrets that should be invisible to peer skills.
    Fix: Remove all code or instructions that list or read other skills' files or directories. Skills should operate independently; cross-skill access is a privilege escalation.
How audits are shown
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 $0.00116 $0.02811
Opus 5 $0.00058 $0.01406
Sonnet 5 $0.00023 $0.00562
Haiku 4.5 $0.00012 $0.00281

Measured 12d ago against content hash 7955d349f08e, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

sssf-sandbox-orchestrator scanned grade A with 1 finding 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 12d 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

- Dropping to `ssh <vm>.exe.xyz '...'` or `curl` to **inspect** is fine and expected — that is what
.claude/skills/sssf-sandbox-orchestrator/SKILL.md · 152 lines

How it starts

The opening of the file, as written. The whole thing — 152 lines — stays where its author put it; the contents beside it link to each section on GitHub.

SSSF Sandbox Orchestrator

Drives the out-of-sandbox half of this repo: the sbx namespace under just/sandbox/ that take a blank exe.dev VM to a health-checked, running factory in ~10s, run work inside it, expose it to a browser, and — only when a human says so — tear it down.

The one governing principle: THIN SKILL, FAT RECIPES

Every action you take should be a just command a human could type. The recipes hold the knowledge; this skill holds the judgment about which one to run and how to read the result.

  • Dropping to ssh <vm>.exe.xyz '...' or curl to inspect is fine and expected — that is what just sbx run cmd <id> '<cmd>' exists for, and reading a log or a table needs no ceremony.
  • Re-implementing what a recipe already does is not. Never hand-roll a key mint, a revoke, an ssh exe.dev new, a share port, or a detached nohup launch. Those encode measured facts (mint order, the revocation gate, the proxy retarget, the three detachment pieces) and a hand-rolled version drops one of them silently.
  • If a recipe is wrong, fix the recipe and say so. Do not route around it.

Dependencies

This skill references /sssf and /sandbox-exe-dev rather than duplicating them. /sssf owns the ADW roster, the handoff contract and the trace-db schema; /sandbox-exe-dev owns the exe.dev CLI surface. Both move without asking us, and a copy pasted here would be a second source of truth that goes wrong quietly — a stale model id, a renamed flag. Read them; do not quote them.

Preflight is one command. Run it before the first phase; any failure means report and stop, never work around a missing prerequisite by hand.

just sbx manage doctor

It checks all six in one pass: ssh exe.dev reachable, OPENROUTER_PROVISIONING_KEY set (never printed), the run-record helper runs, the provisioner is executable, the models template carries full four-field rate blocks, and the adw layer resolves. Green ends with sbx doctor: OK.

Read the full file on GitHub · 152 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. 12d ago First seen · 152 lines · 116 tokens per session scan A 7955d349f08e

Subscribe to this mod's changes

sssf-sandbox-orchestrator is a skill published in the GitHub repository disler/inkwell-agent-sandboxes-and-software-factory (154 stars, last pushed 1mo ago), licensed MIT. It adds 116 tokens to every session and 2,811 once invoked, about $0.0006 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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