claude-vibe-squad: Skill for Claude Code

.agents/skills/sandbox-provision-discipline/SKILL.md

sandbox-provision-discipline is a skill for Claude Code, Codex from mtarcure/claude-vibe-squad. It costs 45 tokens per session (439 once invoked), scanned A, original, MIT.

A checklist for safely setting up isolated environments for proof-of-concept code, untrusted programs, fuzzing, and other risky tests.

In plain words
What is it for?
It is for checking permission, isolation, credentials, network access, evidence collection, and cleanup before and after risky testing.
Why use it?
It helps prevent unauthorized access, data leaks, unsafe network connections, and leftover test resources.

Skill for Claude CodeCodex

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

This is mtarcure/claude-vibe-squad's own configuration. It tells Claude Code and Codex how to work on claude-vibe-squad 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 claude-vibe-squad configures →

Reuse

Borrowing it

Nothing to install: this file belongs to mtarcure/claude-vibe-squad. 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/mtarcure/claude-vibe-squad/main/.agents/skills/sandbox-provision-discipline/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/mtarcure/claude-vibe-squad

Made for: Claude Code, Codex.

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README.md
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Per session 45 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 439 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. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
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 $0.00045 $0.00439
Opus 5 $0.00023 $0.00219
Sonnet 5 $0.00009 $0.00088
Haiku 4.5 $0.00005 $0.00044

Measured 2d ago against content hash d1ce631441de, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

sandbox-provision-discipline 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 2d 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/sandbox-provision-discipline/SKILL.md · 47 lines

What it actually says

Sandbox Provision Discipline

Use this skill before provisioning or using Docker, a VM, Kubernetes, or any other environment for exploit PoCs, untrusted binaries, fuzzing, or tests that could reach systems beyond the authorized target.

Preflight gate

Record all of the following before execution:

  1. The task's explicit authorization and exact target scope.
  2. The isolation boundary and whether it is dedicated or shared.
  3. Network policy: deny egress by default; enumerate any approved destination.
  4. Credential policy: inject no production or unrelated credentials.
  5. Filesystem policy: expose only required inputs; keep outputs in the packet's write scope; declare persistence and retention in advance.
  6. Resource limits for CPU, memory, process count, time, and storage.
  7. A harmless containment check showing the sandbox cannot reach an unapproved host, credential source, or host path.

If any item is unknown or cannot be verified, stop before payload execution and report needs_human plus the missing guarantee. Do not weaken isolation to make a test pass.

Execution discipline

  • Use disposable, uniquely labeled resources tied to the task ID.
  • Keep host mounts read-only unless a specific write is required and approved.
  • Capture the sandbox definition, tool versions, limits, containment-check result, and test timestamps without logging secret values.
  • Never redirect a failed local test to a live target or another tenant.
  • Treat unexpected egress, host access, or cross-tenant data as a hard stop.

Cleanup and handoff

State the cleanup procedure and rollback before execution. Perform deletion or destructive cleanup only when the governing task explicitly authorizes it. Otherwise leave resources stopped, identify them precisely, and request operator action. Report residual processes, mounts, volumes, network rules, artifacts, and secrets even when the test succeeds.

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. 2d ago Changed · +1 lines d1ce631441de
  2. 8d ago First seen · 46 lines · 45 tokens per session scan A 54e7e82ce3f0

Subscribe to this mod's changes

sandbox-provision-discipline is a skill published in the GitHub repository mtarcure/claude-vibe-squad (148 stars, last pushed 2d ago), licensed MIT. It adds 45 tokens to every session and 439 once invoked, about $0.0002 per session on Opus 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 2026-09-03.