What is m365copilot-mcp CLAUDE.md?

A project instruction file for an MCP server that connects Claude Code to Microsoft 365 Copilot APIs. It describes access to Microsoft Graph, Copilot retrieval, search, and chat, plus the project's modular development stages.

Use it when developing or reviewing the M365 Copilot MCP server, its API modules, authentication, search, retrieval, or chat features.

It gives agents the architecture and project rules needed when modifying this integration.

How chenxizhang/m365copilot-mcp configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to chenxizhang/m365copilot-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.

Copy the file

curl -O https://raw.githubusercontent.com/chenxizhang/m365copilot-mcp/master/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/chenxizhang/m365copilot-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/instructions/chenxizhang/m365copilot-mcp/claude-md/github.svg)](https://agentmods.dev/instructions/chenxizhang/m365copilot-mcp/claude-md)

Your own site

<a href="https://agentmods.dev/instructions/chenxizhang/m365copilot-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/chenxizhang/m365copilot-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.

Your own site · 80×15

<a href="https://agentmods.dev/instructions/chenxizhang/m365copilot-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/chenxizhang/m365copilot-mcp/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 4,202 This file is loaded in full into every session.

When invoked 4,202 The same file — it is already loaded in full.

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.

Token cost

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	$0.04202	$0.04202
Opus 5	$0.02101	$0.02101
Sonnet 5	$0.00840	$0.00840
Haiku 4.5	$0.00420	$0.00420

Measured 9d ago against content hash 32ff8c297ee4, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

m365copilot-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.

CLAUDE.md · 441 lines

How it starts

The opening of the file, as written. The whole thing — 441 lines — stays where its author put it; the contents beside it link to each section on GitHub.

M365 Copilot MCP Server - Development Guide

This document provides architecture, design decisions, and development instructions for the M365 Copilot MCP Server project.

Project Overview

The M365 Copilot MCP Server is a Model Context Protocol (MCP) server that integrates with Microsoft 365 Copilot APIs, providing Claude Code with access to:

Microsoft Graph API
M365 Copilot Retrieval capabilities
M365 Copilot Search capabilities
M365 Copilot Chat capabilities

Architecture Principles

Modular Design

The project is structured for multi-agent parallel development:

Each module should have clear responsibilities and minimal dependencies
Utilities are separated into individual files for easy testing and reuse
Tool implementations are isolated and can be developed independently

Progressive Enhancement

Development follows a staged approach:

Stage 1: Minimal MCP Server Foundation (COMPLETED)
Stage 2: Enhanced Tools & Error Handling (COMPLETED)
Stage 3: Azure Identity Integration (COMPLETED)
Stage 4: M365 Copilot Retrieval API (COMPLETED)
Stage 5: M365 Copilot Search API (COMPLETED)
Stage 6: M365 Copilot Chat API (COMPLETED)
Stage 7: Production Polish (COMPLETED - Ready for npm publication!)
Stage 8: Future Enhancements (Optional)

Project Structure

m365copilot-mcp/
├── src/
│   ├── index.ts              # Main entry point with stdio transport
│   ├── server.ts             # MCP server initialization and tools
│   ├── utils/                # Utility modules (Stage 2+)
│   │   ├── logger.ts         # Logging utilities
│   │   ├── errors.ts         # Error handling utilities
│   │   ├── validation.ts     # Input validation helpers
│   │   └── httpClient.ts     # Graph REST API client (Stage 4+)
│   ├── tools/                # Tool implementations (Stage 4+)
│   │   ├── retrieval.ts      # M365 Copilot Retrieval API
│   │   ├── search.ts         # M365 Copilot Search API
│   │   └── chat.ts           # M365 Copilot Chat API
│   └── auth/                 # Authentication modules (Stage 3+)
│       └── identity.ts       # Azure Identity integration
├── build/                    # Compiled JavaScript (generated)
├── package.json              # Dependencies and scripts
├── tsconfig.json             # TypeScript configuration
├── .gitignore                # Git ignore rules
├── CLAUDE.md                 # This file - Claude Code instructions
└── README.md                 # User-facing documentation

Read the full file on GitHub · 441 lines

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.

9d ago First seen · 441 lines · 4,202 tokens per session scan A 32ff8c297ee4

Subscribe to this mod's changes

m365copilot-mcp CLAUDE.md is an instructions file published in the GitHub repository chenxizhang/m365copilot-mcp (19 stars, last pushed 3mo ago), licensed MIT. It adds 4,202 tokens to every session, about $0.0210 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 2026-08-30.

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m365copilot-mcp: Instructions file for Claude Code