Teams MCP - Technical Manual

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Overview

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

Note: The Teams MCP Server is both an MCP server and a connector — it exposes 12 MCP tools (8 chat/messaging + 4 transcript/KB) that AI clients invoke on demand, and once a user connects their account, it automatically ingests meeting transcripts into the Unique knowledge base in the background. This contrasts with pure connector-style servers which ingest data silently without exposing tools.

Key distinction: meeting transcripts and recordings are ingested into Unique (copied into the knowledge base) and queried from that stored copy; Teams chat and channel messages are accessible in Unique through the MCP tools but are never ingested — they are fetched live from the Microsoft Graph API and exist only in Microsoft. "Not ingested" is about storage, not accessibility. See README — Where the Data Lives.

Documentation

Document	Description
Architecture	System components, infrastructure, and data model
Flows	Sequence diagrams for user connection, subscriptions, and processing
Permissions	Microsoft Graph permissions with least-privilege justification
Security	Encryption, authentication, and threat model
Subscription Management	Transcript-ingestion webhook subscription lifecycle (create, renew, status, removal)
Tools	Full reference for all 12 MCP tools (8 chat/messaging + 4 transcript/KB)
FAQ	Frequently asked questions