outlook-assistant

MCP server for Outlook email, calendar, and contacts — let your AI assistant manage your inbox directly from the conversation.

→ littlebearapps/outlook-assistant · listed on github_topic

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// key findings

✅

No credential exfiltration, no sensitive file access, no obfuscation

Static analysis found nothing flowing your secrets to unexpected places.

✅

Open source with a license and README

Anyone can audit the code, the license is declared, and the publisher documents what it does.

🔐

You'll be asked for 3 credentials: MS_CLIENT_SECRET, MYAPP_CLIENT_SECRET, OUTLOOK_CLIENT_SECRET

These are read from process.env at runtime. Make sure you trust where they’ll be sent.

// required environment variables

This server reads these from process.env. You'll be asked to provide them before it can run.

configMS_CLIENT_ID— Note: The server also accepts and MS_CLIENT_SECRET for backwards compatibility.

🔐 secretMS_CLIENT_SECRET— Note: The server also accepts MS_CLIENT_ID and for backwards compatibility.

configMS_REDIRECT_URI

configMS_SCOPES

configMS_TOKEN_ENDPOINT

configMYAPP_AUTH_ENDPOINT

configMYAPP_CLIENT_ID

🔐 secretMYAPP_CLIENT_SECRET

configMYAPP_REDIRECT_URI

configMYAPP_SCOPES

configMYAPP_TOKEN_ENDPOINT

configOUTLOOK_ALLOWED_RECIPIENTS— Recipient allowlist — restrict sending to approved addresses/domains via

configOUTLOOK_AUTH_AUDIENCE— OAuth audience: common, consumers (personal-only Azure apps), organizations, or single-tenant GUID. Fixes AADSTS9002331 for personal-only app registrations. common

configOUTLOOK_AUTH_METHOD

configOUTLOOK_CLIENT_ID— "": "your-application-client-id",

🔐 secretOUTLOOK_CLIENT_SECRET— "": "your-client-secret-VALUE"

configOUTLOOK_DEFAULT_TIMEZONE— IANA timezone applied to calendar events when callers don't pass one (e.g. Europe/London, America/New_York). Australia/Melbourne

configOUTLOOK_IMMUTABLE_IDS

configOUTLOOK_MAX_EMAILS_PER_SESSION— Session rate limiting — configurable via (default: unlimited)

configUSE_TEST_MODE— true npm start

// full audit trail

The full breakdown of what we checked, the deductions that landed, the network hosts, the dependency advisories, and concrete fix guidance is available to verified publishers.

// embed badge in your README

[![M8ven Score](https://m8ven.ai/badge/mcp/littlebearapps-outlook-assistant-j6z955)](https://m8ven.ai/mcp/littlebearapps-outlook-assistant-j6z955)

commit: 080f80ed037ae0f5a0dec6e21652789c61ee94c2

code hash: 03a5453b0089d047fe478b7e02c21548c4f5fda9344eb82f33f5c4a04517331c

verified: 6/15/2026, 1:31:53 PM

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