Borrowing it
Nothing to install: this file belongs to peacockery-studio/outlook-mcp. 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/peacockery-studio/outlook-mcp/main/CLAUDE.mdgit clone --depth 1 https://github.com/peacockery-studio/outlook-mcpWrote 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/peacockery-studio/outlook-mcp/claude-md)<a href="https://agentmods.dev/instructions/peacockery-studio/outlook-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/peacockery-studio/outlook-mcp/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/peacockery-studio/outlook-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/peacockery-studio/outlook-mcp/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 | $0.02022 | $0.02022 |
| Opus 5 | $0.01011 | $0.01011 |
| Sonnet 5 | $0.00404 | $0.00404 |
| Haiku 4.5 | $0.00202 | $0.00202 |
Grade A, and why
outlook-mcp 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 9d 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 — 187 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CLAUDE.md
This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
Development Commands
bun install- ALWAYS run first to install dependenciesbun run start- Start the MCP serverbun run auth-server- Start the OAuth authentication server on port 3333 (required for authentication)bun run test-mode- Start the server in test mode with mock databun run inspect- Use MCP Inspector to test the server interactivelybun run typecheck- Run TypeScript type checkingbun test- Run Jest tests./test-modular-server.sh- Test the server using MCP Inspector./test-direct.sh- Direct testing scriptbunx kill-port 3333- Kill process using port 3333 if auth server won't start
Architecture Overview
This is a modular MCP (Model Context Protocol) server that provides Claude with access to Microsoft Outlook via the Microsoft Graph API. The architecture is organized into functional modules:
Core Structure
index.ts- Main entry point that combines all module tools and handles MCP protocolconfig.ts- Centralized configuration including API endpoints, field selections, and authentication settingsoutlook-auth-server.ts- Standalone OAuth server for authentication flowtypes.ts- Shared TypeScript type definitions
Modules
Each module exports tools and handlers:
auth/- OAuth 2.0 authentication with token managementcalendar/- Calendar operations (list, get, create, update, accept, tentatively accept, decline, forward, cancel, delete, free/busy)email/- Email management (list, search, read, send, reply, reply-all, forward, drafts, attachments, flag, copy, mark as read, categories, archive, delete)folder/- Folder operations (list, create, rename, delete, move emails)rules/- Email rules management (list, create, update, delete, edit sequence)contacts/- Contact management (list, get, create, update, delete)tasks/- Microsoft To Do integration (task lists, tasks CRUD)settings/- Mailbox settings (get settings, out-of-office, mail tips)utils/- Shared utilities including Graph API client and OData helpers
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.
- 9d ago First seen · 187 lines · 2,022 tokens per session scan A dbcb86e6ff89
outlook-mcp CLAUDE.md is an instructions file published in the GitHub repository peacockery-studio/outlook-mcp (1 stars, last pushed 6mo ago), licensed MIT. It adds 2,022 tokens to every session, about $0.0101 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 2026-08-31.
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