# Outlook Semantic MCP - Technical Reference

## Overview

This section contains detailed technical documentation for developers and architects working with the Outlook Semantic MCP Server.

**Note:** The Outlook Semantic MCP Server is both an MCP server and a connector — it exposes 10 MCP tools (plus 4 debug-mode tools) that AI clients invoke on demand, and once a user connects their account, it automatically syncs their emails into the Unique knowledge base in the background. This contrasts with pure connector-style servers (like Sharepoint Connector) which ingest data silently without exposing tools.

## Documentation

| Document | Description |
| --- | --- |
| [Architecture](https://docs.unique.ai/it-operators/integrations-connectors/outlook-semantic-mcp/outlook-semantic-mcp-technical-reference/outlook-semantic-mcp-architecture) | System components, modules, database schema, and RabbitMQ topology |
| [Flows](https://docs.unique.ai/it-operators/integrations-connectors/outlook-semantic-mcp/outlook-semantic-mcp-technical-reference/outlook-semantic-mcp-flows) | Sequence diagrams for OAuth connection, email sync, and subscription lifecycle |
| [Permissions](https://docs.unique.ai/it-operators/integrations-connectors/outlook-semantic-mcp/outlook-semantic-mcp-technical-reference/outlook-semantic-mcp-permissions) | Microsoft Graph permissions with least-privilege justification |
| [Security](https://docs.unique.ai/it-operators/integrations-connectors/outlook-semantic-mcp/outlook-semantic-mcp-technical-reference/outlook-semantic-mcp-security) | Encryption, OAuth 2.1 with PKCE, token rotation, and threat model |
| [Subscription Management](https://docs.unique.ai/it-operators/integrations-connectors/outlook-semantic-mcp/outlook-semantic-mcp-technical-reference/outlook-semantic-mcp-subscription-management) | Subscription lifecycle, renewal, status, and failure handling |
| [Features](https://docs.unique.ai/it-operators/integrations-connectors/outlook-semantic-mcp/outlook-semantic-mcp-technical-reference/outlook-semantic-mcp-features) | User-facing features, what's supported, what's not, and setup steps (including delegated access) |
| [Tools](https://docs.unique.ai/it-operators/integrations-connectors/outlook-semantic-mcp/outlook-semantic-mcp-technical-reference/outlook-semantic-mcp-tools) | Full reference for all 10 MCP tools (plus 4 debug-mode tools) |
| [FAQ](https://docs.unique.ai/it-operators/integrations-connectors/outlook-semantic-mcp/outlook-semantic-mcp-faq) | Frequently asked questions |