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m365-mcp-server: Instructions file for Claude Code

CLAUDE.md

m365-mcp-server CLAUDE.md is an instructions file for Claude Code from SwamiRama/m365-mcp-server. It costs 614 tokens per session, scanned A, original, MIT.

A project-specific instruction file for an MCP server that connects Microsoft 365 services to AI clients through Microsoft Graph and Azure AD.

In plain words
What is it for?
Use it when developing, debugging, deploying, or extending Microsoft 365 features such as mail, SharePoint, OneDrive, and read-only calendar access.
Why use it?
It gives an agent the project’s architecture, important files, deployment details, and known implementation requirements so it can work consistently in the codebase.

Instructions file for Claude Code

Written for Claude Code: the file is CLAUDE.md.

This is SwamiRama/m365-mcp-server's own configuration. It tells Claude Code how to work on m365-mcp-server itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything m365-mcp-server configures →

not rated 0repo 9d ago A scan 614 tokens original MIT
View source ↗ SwamiRama/m365-mcp-server
Reuse

Borrowing it

Nothing to install: this file belongs to SwamiRama/m365-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.

Copy the file
curl -O https://raw.githubusercontent.com/SwamiRama/m365-mcp-server/main/CLAUDE.md
Clone the repo
git clone --depth 1 https://github.com/SwamiRama/m365-mcp-server

Made for: Claude Code.

Wrote this? Show the measurements

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README.md
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<a href="https://agentmods.dev/instructions/swamirama/m365-mcp-server/claude-md"><img src="https://agentmods.dev/badge/instructions/swamirama/m365-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.

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Your own site · 80×15
<a href="https://agentmods.dev/instructions/swamirama/m365-mcp-server/claude-md"><img src="https://agentmods.dev/badge/instructions/swamirama/m365-mcp-server/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 614 This file is loaded in full into every session.
When invoked 614 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00614 $0.00614
Opus 5 $0.00307 $0.00307
Sonnet 5 $0.00123 $0.00123
Haiku 4.5 $0.00061 $0.00061

Measured 9d ago against content hash 02f07d433b45, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

m365-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 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 · 44 lines

How it starts

The opening of the file, as written. The whole thing — 44 lines — stays where its author put it; the contents beside it link to each section on GitHub.

M365 MCP Server - Project Context

Projektübersicht

MCP Server für Microsoft 365, der als OAuth 2.1 Authorization Server fungiert und mit Open WebUI kompatibel ist.

Architektur

Open WebUI (OAuth Client) → MCP Server (Auth + Resource Server) → Azure AD (IdP) → Microsoft Graph API

Wichtige Dateien

  • src/oauth/ - OAuth 2.1 Implementation (DCR, PKCE, JWT)
  • src/graph/client.ts - Microsoft Graph API Client
  • src/tools/mail.ts - Mail Tools (list, get, folders, attachments; shared mailbox support)
  • src/tools/sharepoint.ts - SharePoint/OneDrive Tools
  • src/tools/onedrive.ts - Dedicated OneDrive Tools (personal drive)
  • src/tools/calendar.ts - Calendar Tools (read-only)
  • src/utils/config.ts - Konfiguration und Graph Scopes

Deployment

  • Docker Image: ghcr.io/swamirama/m365-mcp-server:latest
  • Hosting: Azure Container Apps
  • CI/CD: GitHub Actions (.github/workflows/ci.yml)

Bekannte Besonderheiten

  • Graph API /sites Endpoint benötigt ?search=* Parameter um Sites zu listen
  • OAuth Token Endpoint benötigt express.urlencoded() Middleware
  • Hinter Reverse Proxy: app.set('trust proxy', true) erforderlich
  • Alle 401-Responses MÜSSEN WWW-Authenticate: Bearer resource_metadata="..." Header setzen, damit MCP-Clients (Open WebUI) den OAuth-Server discovern und Re-Auth auslösen können

Test-Scripts

  • scripts/test-local-oauth.sh - Voller OAuth Flow Test
  • scripts/test-sharepoint-az.sh - SharePoint Test mit Azure CLI

Token-Lifetimes (seit 2026-06-04)

  • Refresh-Tokens rotieren bei jedem Refresh-Grant; Lifetime via OAUTH_REFRESH_TOKEN_LIFETIME_SECS (Prod: 30d)
  • Session-TTL via SESSION_TTL_SECONDS (sliding, Prod: 30d) — muss >= Refresh-Token-Lifetime sein, Boot-Validierung erzwingt das
  • Rotation-Grace OAUTH_REFRESH_TOKEN_REUSE_GRACE_SECS (Default 60s) toleriert konkurrierende Refreshes (Open WebUI 2-6 Replicas); Reuse nach Grace revoked die Token-Familie (Log-Event oauth.refresh_token_reuse)
  • MSAL-Cache + Sessions liegen AES-256-GCM-verschlüsselt in Redis (Key aus SESSION_SECRET)

Read the full file on GitHub · 44 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.

  1. 9d ago First seen · 44 lines · 614 tokens per session scan A 02f07d433b45

Subscribe to this mod's changes

m365-mcp-server CLAUDE.md is an instructions file published in the GitHub repository SwamiRama/m365-mcp-server (0 stars, last pushed 9d ago), licensed MIT. It adds 614 tokens to every session, about $0.0031 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.

DevOps and cloudOAuthmcpmicrosoft365model-context-protocolsharepoint
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