MCP.Market

Ratchet MCP server

by iversonwuwei·io.github.iversonwuwei/ratchet·v0.12.1

Read-only tools to inspect your agent setup: list MCP servers, flag unpinned ones, test a policy.

B78/100grade B
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B78/100

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If you have run it, two minutes of your experience saves the next person an afternoon.

Ratchet tools

No tool declarations could be read from the package source. They show once the server is installed.

Public scan report

scanner v0.1.10 · 2026-10-02 · same rubric, same numbers if you re-run it

no findings
  • –Code scanpackage could not be scannedn/a
  • –Live reliabilityno gateway calls yet and no remote to proben/a
  • –Tool poisoningtools not inspected (local package is not executed); not countedn/a
  • Auth qualitylocal package, no credentials required12/15
  • Maintenancelast push 6 days ago15/15
  • Maintainer identitynamespace and repository owner differ4/10
Overall 78/100. Components that don't apply are left out of the denominator. Any critical finding is an F.RubricAppeal a findingJSON

How Ratchet compares

Against every graded AI and agents MCP server, from our own scans and uptime checks. Updated after each scan run.

Safety score
78/100
higher than 57% of 4,460 AI and agents servers

Release history: 4 versions in the registry since 2026-09-19, latest 2026-09-20, typically several a day.

Install Ratchet in Claude Code, Cursor or VS Code

claude mcp add ratchet -- docker run -i --rm ghcr.io/suhui-organization/ratchet:v0.12.1
Add to Cursor

What the publisher says

From the Ratchet repository's README, as published. We do not edit it. Read it on GitHub

Ratchet

从 agent 的真实行为编译最小权限策略,并给出收货方能自己验证的证据。

curl -fsSL https://github.com/suhui-organization/ratchet/releases/latest/download/install.sh | sh

macOS / Linux 上也可以用 Homebrew(formula 钉住每个平台的 sha256):

brew install suhui-organization/tap/ratchet

Claude Desktop 用户可以直接装本地 server(一键安装包,不需要命令行):

下载 ratchet-0.12.0.mcpb 并打开它,Claude Desktop 会完成安装。包内是四个平台的原生二进制 + 一份 manifest.json (MCPB 规范),不需要 Node 或 Python 运行时。

Linux / macOS(amd64 · arm64)。装完先跑这一条——只读配置,不执行任何东西:

ratchet scan --home ~

它会在十秒内告诉你:这台机器上有几个 MCP server,其中几个没锁版本。 (我自己的机器:16 个里 12 个没锁。)

棘轮只能往一个方向转:权限可以收紧,放宽必须显式。

这是什么

一个跑在你自己机器上的工具:它读 agent 用到的工具清单, 编译出一份最小权限策略,再把这次审计的产物打成一份 收货方不需要信任你、也不需要装任何东西就能验证的交付目录。

这不是什么

  • 不是沙箱、不是容器运行时;
  • 不是 prompt 内容过滤器;
  • 不是企业控制台(不做 dashboard、不做多租户、不做 SaaS 依赖);
  • 不要求你把日志传到哪里去。

为什么值得存在

市场上的产品要么让你自己手写策略(Cedar / CEL / 自然语言), 要么要你相信它的日志。Ratchet 做的是这两件之间缺失的一步: 策略由观测编译,证据由收货方自己算哈希。

一个例子

# 1) 编译:从工具清单得到一份保守的最小权限策略
ratchet policy draft --from examples/inventory.json --out policy.json

# 2) 出交付物:报告 + 逐文件 sha256 清单
ratchet-report build --dir ./delivery --policy policy.json

# 3) 收货方验证(不需要装 ratchet)
python3 verify.py ./delivery

仓库结构

状态

0.12.0 — developer preview,链路已经整条打通(本机实测:16 个 MCP server、 12 个未锁版本、164 个工具、策略 allow 43 / approve 106 / deny 15):

拿到它的方式:curl -fsSL https://github.com/suhui-organization/ratchet/releases/latest/download/install.sh | sh、 brew install suhui-organization/tap/ratchet、容器 ghcr.io/suhui-organization/ratchet, 或官方 MCP Registry 里的 io.github.iversonwuwei/ratchet。

清楚的边界:能力判定是名称/描述的启发式,会双向出错(仓里有两条已知误判的测试); 它不是沙箱、运行时不拦调用;判定不了的会单独列出来请人确认,而不是猜一个结论。 详见 docs/PLAN.md 与 docs/DELIVERY-0.14.0.md。

许可证

Apache-2.0,见 LICENSE。

开发

make test          # 三端全部测试
make go-test
make py-test
make web-test

Nothing above is checked by us. What we check is on the safety report.

Ratchet: common questions

Is Ratchet MCP server safe?
Mostly: it is graded B (78/100). Read the Ratchet safety report
How do I install Ratchet?
It runs on your machine. Copy the Claude Code, Cursor, VS Code or Claude Desktop config from the install section.
Does Ratchet need an API key?
Not as far as the registry entry and our scan can tell: no credentials are declared or required.
Is Ratchet maintained?
The last commit was 38 days ago (2026-09-27). The latest release is v0.12.1.
What can I use instead of Ratchet?
Servers from other publishers that do the same job: agent-device MCP server, Local Rag MCP server and Mockserver MCP server.

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