Borrowing it
Nothing to install: this file belongs to conorbronsdon/gws-mcp-server. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/conorbronsdon/gws-mcp-server/main/CLAUDE.mdgit clone --depth 1 https://github.com/conorbronsdon/gws-mcp-serverWrote 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.
[](https://agentmods.dev/instructions/conorbronsdon/gws-mcp-server/claude-md)<a href="https://agentmods.dev/instructions/conorbronsdon/gws-mcp-server/claude-md"><img src="https://agentmods.dev/badge/instructions/conorbronsdon/gws-mcp-server/claude-md/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.
<a href="https://agentmods.dev/instructions/conorbronsdon/gws-mcp-server/claude-md"><img src="https://agentmods.dev/badge/instructions/conorbronsdon/gws-mcp-server/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00915 | $0.00915 |
| Opus 5.5 | $0.00366 | $0.00366 |
| Sonnet 5.5 | $0.00183 | $0.00183 |
| Haiku 4.5 | $0.00092 | $0.00092 |
Grade A, and why
gws-mcp-server CLAUDE.md 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 15d 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.
How it starts
The opening of the file, as written. The whole thing — 45 lines — stays where its author put it; the contents beside it link to each section on GitHub.
gws-mcp-server
MCP server that exposes Google Workspace CLI (gws) as Model Context Protocol tools.
Architecture
src/index.ts— MCP server bootstrap, Zod schema generation, tool registration. Also hosts custom tools that don't fit the declarative ToolDef pattern (listed inCUSTOM_TOOLS:drive_files_download,gmail_drafts_create,drive_permissions_transferOwnership,drive_permissions_proposeOwnershipTransfer).src/services.ts— Declarative tool definitions across 8 services (drive, sheets, calendar, docs, slides, gmail, tasks, people). Each entry maps to agwsCLI command + params/body.DEFAULT_SERVICESis the no-flag set;peopleis supported but opt-in because it needs an extra OAuth scope.src/executor.ts— Command builder and runner with security hardening (shell injection prevention, path validation).src/errors.ts— Typed error hierarchy;mapGwsErrorToTyped()recovers a status code from gws's plain-text stderr.src/auth.ts—gws-mcp-server auth login -s <services>: reads the saved credential's scopes fromgws auth status, merges in the services' scopes and runsgws auth login --scopes <union>(gws's own-sreplaces the credential, #68). Dispatched frommain()when argv[2] isauth.src/mime.ts— RFC 2822 builder + base64url encoding forgmail_drafts_create. Includes CRLF-injection guard on header values.src/__tests__/— Vitest tests: one file per source module, plus an in-memory MCP client suite, a Windows-only npm-shim argument round-trip, and a publish-workflow check.
Key constraints
gwsis always spawned without a shell; on Windowssrc/windows-binary.tsresolves npm'sgws.cmdto its JS entry point and runs it with Node- Custom tools (
CUSTOM_TOOLSinindex.ts) are registered by hand because they do work the declarativeToolDefshape can't express (file type detection, MIME building, request-body fields the caller must not be able to set) - All tools delegate to the
gwsCLI binary — no direct Google API calls - Gmail draft creation accepts user-controlled header values;
src/mime.tsrejects CR/LF in any header input to prevent email header injection
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.
- 15d ago Changed · +2 lines · +136 tokens per session 25ca3c2eb94d
- 1mo ago Changed · +36 tokens per session ab8c2c8b54c0
- 1mo ago Changed · +5 lines · +231 tokens per session ed7ba7dd110d
- 2mo ago First seen · 38 lines · 512 tokens per session scan A a81470716ebd
gws-mcp-server CLAUDE.md is an instructions file published in the GitHub repository conorbronsdon/gws-mcp-server (13 stars, last pushed 8d ago), licensed MIT. It adds 915 tokens to every session, about $0.0037 per session on Opus 5.5. 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 2026-08-31.
Other instructions, from other repositories
vscode buildNext.instructions.md
Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).
next.js AGENTS.md
AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, cache eligibility and rollout and applying the notice (cutover).
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.
vscode copilot-instructions.md
Copilot instructions for microsoft/vscode, covering vs code copilot instructions, project overview, root folders, core architecture (src/ folder) and built-in extensions (extensions/ folder).
deno copilot-instructions.md
Copilot instructions for denoland/deno, covering deno development guide for github copilot, network access, high level overview, key directories and key files to understand first.