A Claude Code plugin for read-only Google Workspace security audits. Google Workspace is Google’s business suite, including user accounts, Gmail, Drive, and Groups; the plugin checks their security and activity data through a service account.

Use it to review suspicious or disabled logins, suspended accounts, OAuth app grants, external Drive sharing, group delivery rules, Gmail message delivery, and a daily security brief. You must supply the local configuration file and Google service-account key files.

It gathers several audit checks in one place without making changes to Workspace data. It helps investigate account access, third-party app permissions, file exposure, group policies, and email delivery across one or more domains.

gwsadm-mcp — Plugin for Claude Code by shigechika

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Clone the repo

git clone --depth 1 https://github.com/shigechika/gwsadm-mcp

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.

README.md

[![agentmods](https://agentmods.dev/badge/plugins/shigechika/gwsadm-mcp/plugin/github.svg)](https://agentmods.dev/plugins/shigechika/gwsadm-mcp/plugin)

Your own site

<a href="https://agentmods.dev/plugins/shigechika/gwsadm-mcp/plugin"><img src="https://agentmods.dev/badge/plugins/shigechika/gwsadm-mcp/plugin/github.svg" alt="Measured on agentmods" height="20"></a>

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.

Your own site · 80×15

<a href="https://agentmods.dev/plugins/shigechika/gwsadm-mcp/plugin"><img src="https://agentmods.dev/badge/plugins/shigechika/gwsadm-mcp/plugin.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session not measured What this adds to a session before it is invoked.

When invoked not measured Not applicable: nothing here is loaded into a session.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Security

Grade A, and why

gwsadm-mcp 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 14d 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.

plugin/.claude-plugin/plugin.json · 23 lines

What it actually says

{
  "$schema": "https://json.schemastore.org/claude-code-plugin-manifest.json",
  "name": "gwsadm-mcp",
  "displayName": "gwsadm-mcp",
  "description": "Google Workspace security-audit MCP for Claude Code, through a service account with domain-wide delegation. Investigate suspicious/disabled logins, suspended accounts, third-party OAuth grants, Drive external sharing, group delivery policy, and Gmail message tracing across one or more Workspace domains, plus a one-shot daily_brief. Read-only as installed — the one write tool (sign_out_user) exists only when GWSADM_ENABLE_SIGN_OUT=1 is set. Needs a local GWSADM_CONFIG INI file, and the Google Cloud service-account JSON key(s) it references, already present on the machine; the plugin cannot create or supply those files for you.",
  "author": {
    "name": "AIKAWA Shigechika",
    "url": "https://github.com/shigechika"
  },
  "homepage": "https://shigechika.github.io/gwsadm-mcp/",
  "repository": "https://github.com/shigechika/gwsadm-mcp",
  "license": "MIT",
  "keywords": [
    "google-workspace",
    "admin-sdk",
    "directory",
    "gmail",
    "drive",
    "audit",
    "security"
  ]
}

Contents

What it installs

The manifest is a name and a version. 1 MCP server travel with it, and installing the plugin installs all of them. Each is measured on its own page, and each can be installed alone.

MCP server gwsadm-mcp A not measured

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.

14d ago Changed 6517bcfb2f55
2mo ago First seen · 23 lines scan A 1b7646cfc800

Subscribe to this mod's changes

gwsadm-mcp is a plugin published in the GitHub repository shigechika/gwsadm-mcp (0 stars, last pushed 12d ago), licensed MIT. Its token cost is not measured: this kind of file is read by the harness, not the model. 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 2026-08-31.