M365 MCP

MCP server for Microsoft 365 via the Microsoft Graph API, providing read-only access to profile, calendar, email, Teams chats, OneDrive files, and meeting transcripts from any MCP client.

→ StuMason/m365-mcp · listed on glama

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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 1 credential: MS365_MCP_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.

configMS365_MCP_CLIENT_ID— claude mcp add m365-mcp -e =your-client-id -e MS365_MCP_TENANT_ID=your-tenant-id -- npx -y @masonator/m365-mcp

🔐 secretMS365_MCP_CLIENT_SECRET— No Azure AD client secret (confidential clients only)

configMS365_MCP_REDIRECT_URL— No OAuth redirect URI (default: dynamic port, http://localhost:{port}/callback)

configMS365_MCP_TENANT_ID— claude mcp add m365-mcp -e MS365_MCP_CLIENT_ID=your-client-id -e =your-tenant-id -- npx -y @masonator/m365-mcp

configMS365_MCP_TIMEZONE— No Timezone for calendar (default: system timezone)

configXDG_CONFIG_HOME

// 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.

// improvement guidance — verified publishers only

We have 1 concrete improvement we can share with the publisher of this MCP. Each comes with specific guidance to raise the trust score.

// embed badge in your README

[![M8ven Score](https://m8ven.ai/badge/mcp/stumason-m365-mcp-vq780w)](https://m8ven.ai/mcp/stumason-m365-mcp-vq780w)

commit: ae74cc72cd121c9bba5d0746c4d36dbd4ed377c2

code hash: 7257fab8185374abcfcbcb12ea36a93a3f6610a7f4ed35ddadfdbcf1296de2be

verified: 6/14/2026, 10:22:36 AM

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