Agent Runtime Safety Auditor Agent Skill

Enforces deterministic code-level safety boundaries, idempotency, human-in-the-loop approvals, and concurrency isolation in AI agent…

Context cost
8.3k tokensestimated from the bundle, loaded when it triggers
Bundle
17 files · 54.2 kB4 scripts among them — read before you run
Licence
MITthe author’s own terms
Last change
—no release on file
Servers it uses
Noneruns standalone

What it does

在 Agent 功能开发或代码审查过程中,检查并实现工具授权、HITL、幂等、分布式锁、状态跃迁、上下文隔离及执行结果可信传递。仅用于已有 Agent 执行路径的代码级运行时安全;不用于需求/spec 设计、RAG Trace 分析、上线监控或事故取证。

What this skill changes about the agent has not been set out here as a list. Its SKILL.md, shown below, says it in the author’s own words.

agentsecuritytesting

The skill itself

A skill is instructions the model reads, so you can see what you are getting: below is the start of its SKILL.md. The front matter loads with every session, the body loads when the skill triggers, and the whole file comes with the install.

SKILL.md4.6 kB · preview
--- name: agent-runtime-safety-auditor ---
6# Agent Runtime Safety Auditor
7
8作用于 Agent 的代码开发阶段。目标是让安全约束存在于真正执行工具和修改状态的代码边界中,并由自动化测试证明,而不是只写在 Prompt、设计文档或审计报告里。
9
10## 使用边界
11
12在以下任务中使用:
13
14- 新增或修改 Tool Calling、业务写操作、外部发送、设备控制、审批、支付或删除能力。
15- 为现有 Agent 补充 HITL、幂等、Redis 锁、状态机或并发上下文隔离。
16- 审查 Agent 执行器、工具包装器、LangGraph 节点、FastAPI 后台任务及结果回传代码的运行时安全。
17- 修复开发测试中已经定位到上述控制缺失的代码问题。
18
19不要在以下任务中使用:
20
21- 定义 Agent 角色、需求、spec、plan、tasks 或上线验收体系。
22- 分析 RAG 检索质量、上下文 Token、引用、重复文档或离线 Trace 报告。
23- 搭建生产监控、日志平台、告警系统或进行事故取证。
24- 与 Agent 执行路径无关的普通业务代码、安全合规咨询或通用代码审查。
This is a preview of SKILL.md. Download or install the skill to get the whole thing.
In the file
SKILL.md149 words
Files17
LicenceMIT
Why you can read it

Nothing in a skill executes. The client loads the text and the model follows it, so a skill can be audited the way a runbook is — by reading it.

What it costs in context

Skills are not billed by the call. They are paid for in context: every token the instructions occupy is a token your code, your diff and your conversation cannot use. Here is what this one takes and when it takes it.

≈50
always loaded
The name and description, so the model knows the skill exists and when to reach for it.
8,200
on trigger
The instruction body and 16 supporting files, read only when the skill fires.
4.1%
of a 200k window
Ten skills this size would take about 41% of the window before you open a file.
050k100k150k200k context window

8.3k tokens, estimated from the bundle at four bytes to the token, held for the rest of the session once it triggers. Heavy. Teams tend to install this one per project rather than globally, and load it only when the job comes up.

Servers bill, skills cost

A server charges by the month. A skill charges once per session, in context, and then keeps charging it for as long as the session lives.

Before and after

The same question, put to the same model twice: once as it comes, and once with these instructions loaded.

No worked example has been published for this skill yet.

The procedure it runs

The procedure has not been set out here step by step. It is in the body of its SKILL.md: the start of it is shown above, and the whole file comes with the install.

Prose, not code

These steps are written for a model to follow, not executed by a runtime. It can still be told to skip one, and it will say so when it does.

Servers it uses

None. This skill calls no MCP servers at all.

Everything it needs is in the instructions, so it works in a project with nothing connected — the model reads the file and changes how it works with what it can already reach.

Its SKILL.md does not declare which tools it asks the agent for, so what it touches is whatever the instructions themselves ask for — read them before you install it.

What it asks for
Writes filesnot declared
Network accessnot declared

This SKILL.md carries no allowed-tools line, so neither is declared. A skill grants no permissions of its own — it can only ask for tools your client already has.

What it will not do

Every skill is narrow, and the useful ones say where they stop. These are the jobs this one is the wrong tool for.

What this skill is not for has not been published here. Nothing is implied by that: it is a section the author has not filled in.

What is in the bundle

17 files, 54.2 kB on disk. Mostly text — the instructions the model reads — with 4 scripts in it that your client would run only if the instructions tell it to. 1 file of its source is not in the download — listed after these, with why.

  • SKILL.md4.6 kB
  • CHANGELOG.md0.4 kB
  • CONTRIBUTING.md1.3 kB
  • LICENSE1.1 kB
  • README.md6.8 kB
  • SECURITY.md0.8 kB
  • agents/openai.yaml0.3 kB
  • references/control-selection.md5.1 kB
  • references/implementation-patterns.md4.5 kB
  • references/production-readiness.md3.0 kB
  • references/verification.md2.9 kB
  • scripts/run_skill_tests.py0.6 kB
  • tests/scenarios.json1.8 kB
  • tests/test_reference_runtime.py8.3 kB
  • tests/test_skill_package.py2.2 kB
  • .github/workflows/test.yml0.4 kB
  • tests/fixtures/reference_runtime.py10.1 kB

Not in the download

Not carried is a type a skill download does not hold. Take it from its source.

  • .gitignorenot carried
What is not in it

A skill installs nothing and depends on nothing: it is a folder your client reads. This one carries 4 scripts beside the text, so the download is 17 files — not the whole of its source: 1 file is left out. It is listed under the files, with why. The MIT licence covers the templates and examples as well as the instructions.

Install

Installing copies the bundle into your project. Nothing runs at install time — the files sit on disk until the model reads them.

# Agent Runtime Safety Auditor · 8.3k tokens when loaded · macOS, Linux mkdir -p .claude/skills && t=$(mktemp -d) && curl -fsSL -o "$t/bundle.tar.gz" https://mcprush.com/api/skills/agent-runtime-safety-auditor/bundle.tar.gz && tar -xzf "$t/bundle.tar.gz" -C "$t" && [ -d "$t/agent-runtime-safety-auditor" ] && { [ ! -e .claude/skills/agent-runtime-safety-auditor ] || { mv .claude/skills/agent-runtime-safety-auditor "$t/.previous" && echo "Previous copy moved to $t/.previous"; }; } && mv "$t/agent-runtime-safety-auditor" .claude/skills/ && echo "Installed .claude/skills/agent-runtime-safety-auditor"
On Windows, or any OS with Node 20+
npx mcprush@latest skill add xing-0803/agent-runtime-safety-auditor

Windows PowerShell says 'running scripts is disabled on this system'? Run Set-ExecutionPolicy -Scope CurrentUser RemoteSigned once, or type npx.cmd instead of npx (codex.cmd, gemini.cmd, grok.cmd likewise). PowerShell 7 needs neither. Writes to .claude/skills/agent-runtime-safety-auditor/ in the current project. For every project instead, run mkdir -p ~/.claude/skills && t=$(mktemp -d) && curl -fsSL -o "$t/bundle.tar.gz" https://mcprush.com/api/skills/agent-runtime-safety-auditor/bundle.tar.gz && tar -xzf "$t/bundle.tar.gz" -C "$t" && [ -d "$t/agent-runtime-safety-auditor" ] && { [ ! -e ~/.claude/skills/agent-runtime-safety-auditor ] || { mv ~/.claude/skills/agent-runtime-safety-auditor "$t/.previous" && echo "Previous copy moved to $t/.previous"; }; } && mv "$t/agent-runtime-safety-auditor" ~/.claude/skills/ && echo "Installed ~/.claude/skills/agent-runtime-safety-auditor" (macOS, Linux) — or add --global to the npx line. The curl line replaces .claude/skills/agent-runtime-safety-auditor/ only after the download succeeds, so files left there by another skill of the same name, or by an older release, do not mix in. A copy already there is moved aside, not deleted, and the line prints where. Not in this download: 1 file of its source (which one, and why). Take it from its source.

Which clients pick it up on their own

A skill is a folder of text. Most of these read a skills folder and pick it up without being told; the rest take the same folder another way — an upload in the app, a parameter on an API call — and then choose it by its description just the same.

Claude Code.claude/skills/
Claude DesktopCustomize › Skills
ChatGPTSkills › Create › Upload
Cursor.cursor/skills/
VS Code.github/skills/
Codex CLI.agents/skills/
Gemini CLI.gemini/skills/
Grok Build.grok/skills/
Microsoft CopilotSkills › Upload a skill
PerplexityComputer › Skills › Upload a skill
DeepSeek Harness.dsh/skills/
Zed.agents/skills/
Devin Desktop.devin/skills/
Windsurf (legacy).windsurf/skills/
OpenAI Agents SDKInstructions or sandbox Skills
HTTP / APIa request parameter
This release
Versionnot versioned
Publishedno release date on file
PriceFree
Referencexing-0803/agent-runtime-safety-auditor

Versions

Its author publishes no version number, so there is nothing here to pin to: what you install is the folder as it stands today. Instructions change more often than APIs do — a skill can be rewritten entirely without anything it depends on moving.

Pinning

Nothing to pin to: this skill carries no version number of its own. What you install is what the folder holds on the day you install it.

Reviews

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Who wrote it

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xing-0803

Publishes on mcprush.

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