Microsoft Graph MCP Server — Hosted Api Connectors Integration

mcp-microsoft-graph — Microsoft 365 MCP Server

Send Teams messages, manage Outlook email, create calendar events, and browse OneDrive files.

Microsoft Graph is the unified API for Microsoft 365 — covering Teams, Outlook, Calendar, and OneDrive from a single token. This MCP server exposes 14 tools across all four services, letting your AI agents operate across your Microsoft 365 environment: posting to Teams channels, reading emails, scheduling meetings, and finding files stored in OneDrive.

Live endpoint: https://mcp.aerostack.dev/s/aerostack/mcp-microsoft-graph

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What You Can Do

• Post messages to Teams channels from automated workflows — send deploy notifications, alerts, or summaries directly into the right channel
• Read and reply to Outlook emails so AI agents can handle inbox triage, draft responses, or escalate threads
• Create and update calendar events for meeting scheduling automation that connects with HR, CRM, or project systems
• Search OneDrive files so agents can locate relevant documents before drafting reports or pulling data

Available Tools

Tool	Description
list_teams	List all Microsoft Teams the user has joined
list_team_channels	List channels in a team
send_teams_message	Send a message to a Teams channel (text or HTML)
list_team_messages	List recent messages from a Teams channel
send_email	Send an email via Outlook (supports multiple recipients and CC)
list_emails	List emails from inbox, sent items, or drafts with optional search
get_email	Get a full email including body by message ID
reply_to_email	Reply to an existing email message
list_calendar_events	List calendar events with optional date range filter
create_calendar_event	Create a new calendar event with attendees and timezone support
update_calendar_event	Update an existing calendar event's details
delete_calendar_event	Delete a calendar event by ID
list_drive_files	List files and folders in OneDrive root or a specific folder
search_drive_files	Search OneDrive files and folders by keyword

Configuration

Variable	Required	Description	How to Get
MICROSOFT_ACCESS_TOKEN	Yes	Microsoft Graph API OAuth2 access token	portal.azure.com → Azure Active Directory → App registrations → Register app → API permissions → add Microsoft Graph delegated permissions (Team.ReadBasic.All, Mail.ReadWrite, Mail.Send, Calendars.ReadWrite, Files.ReadWrite) → generate token via OAuth2 authorization code flow

Quick Start

Add to Aerostack Workspace

1. Go to aerostack.dev → Your Project → MCPs
2. Search for "Microsoft Graph" and click Add to Workspace
3. Add your MICROSOFT_ACCESS_TOKEN under Project → Secrets

Once added, every AI agent in your workspace can call Microsoft 365 tools automatically — no per-user setup needed.

Example Prompts

"Post a message to the Engineering team's #deployments channel saying the v3.1 release is live"
"Search my Outlook inbox for emails from vendor@supplier.com in the last 7 days and summarize them"
"Schedule a 1-hour kickoff meeting on Thursday at 10am with the whole product team"

Direct API Call

curl -X POST https://mcp.aerostack.dev/s/aerostack/mcp-microsoft-graph \
  -H 'Content-Type: application/json' \
  -H 'X-Mcp-Secret-MICROSOFT-ACCESS-TOKEN: your-oauth-token' \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"list_teams","arguments":{}}}'

License

MIT