Communication · Integration
Microsoft Teams
Add Microsoft Teams to your product for your customers, and give your AI agents governed access to it.
Microsoft Teams is where a great many companies actually work, so a Microsoft Teams integration is how your product reaches people without asking them to watch another tab. The objects are real ones: teams, the channels inside them, one to one and group chats, messages and their replies, members, and adaptive cards, which let somebody approve or reject something from the message itself. What makes it harder than it looks is Microsoft Graph. Permissions split between delegated and application consent, a tenant administrator may have to approve the app before anyone can use it, and change notification subscriptions expire and need renewing. fastn manages per-tenant consent, token refresh and the Graph endpoints as they move.
In your product
Embedded for your customers. Per-tenant auth, no per-customer code, maintained by fastn.
Have a customer choose the team and channel each kind of notification from your product should land in.
Post an adaptive card so an approval happens inside Teams and the answer comes straight back to your product.
Read a channel's recent messages and replies to give your product the context a user is already discussing.
Turn a mention, or a message matching a rule, into an action your product performs for that tenant.
For your AI agents
Governed, audited access for the agents you build, through the MCP server.
An assistant reads the messages in one channel before it drafts a reply for a person to send.
An agent posts an update or a card where it has been permitted to write, and the send is logged.
An agent reports which chats mentioned a customer this week without leaving the tenant that authorised it.
Example prompt
Summarise what this channel decided about the release, and post that summary back as an adaptive card.
Set up Microsoft Teams in 4 steps
- 01Enable the Microsoft Teams connector from your fastn dashboard.
- 02Have each customer authorise their own Microsoft Teams account, so calls run under their credentials rather than a shared key.
- 03Decide which messages, conversations and participants your product needs, map those fields, then enable the actions and triggers you want.
- 04Call it from your product and expose it to your agents through the same governed connection.
Why teams use the Microsoft Teams integration
What you get by embedding it with fastn instead of building it yourself.
- Ship a Microsoft Teams integration without building it. Your customers connect their own Microsoft Teams account inside your product and work their messages, conversations and participants there, with no per-customer code on your side.
- Handle the part that actually costs time: anything sent is user-visible, so duplicates and misfires are immediately embarrassing. fastn owns the auth, token refresh, rate limits, pagination and breaking-change fixes, so a Microsoft Teams update is not your on-call problem.
- One integration serves your product and your agents. The same governed Microsoft Teams connection powers in-product features and gives AI agents scoped, audited access, so you put the right message in front of the right team automatically without wiring it twice.
Used by these teams
Compare with
Slack
Zoom Team Chat
Cisco Webex TeamsOften used alongside
Tools the same teams tend to run next to Microsoft Teams, across other categories.
Aircall
Calendly
Gong
Google CalendarMicrosoft Teams integration FAQ
How do I add a Microsoft Teams integration to my product?
Enable the Microsoft Teams connector in your fastn dashboard, then let each customer authenticate their own Microsoft Teams account. fastn handles the OAuth flow, token storage and refresh per tenant, so there is no Microsoft Teams client code in your app and no per-customer branch in your codebase. Setup is 4 steps.
Do my customers each connect their own Microsoft Teams account?
Yes. Every connection is scoped to the individual customer, so each authorises their own Microsoft Teams account and only ever sees their own messages, conversations and participants. That per-tenant isolation is the point of an embedded integration: you support the long tail of customer setups without maintaining an integration per customer.
Can AI agents use this Microsoft Teams integration?
Yes. The same connection is exposed to your agents through the fastn MCP gateway, with permissions scoped per tenant and every call audited. An assistant reads the messages in one channel before it drafts a reply for a person to send.
Who maintains the Microsoft Teams integration?
fastn does. When Microsoft Teams changes an endpoint, deprecates a field or alters its auth, the fix lands in the connector rather than in your backlog, and your customers' connections keep working.
Does each customer connect their own Microsoft Teams account?
Yes. Every customer authorises their own Microsoft Teams account, so messages, meetings and notifications originate from their workspace under their permissions. You never proxy through a shared account, which also means a customer revoking access affects only their own connection.
How are duplicate notifications avoided?
Sends are deduplicated per event, so a retry after a network failure does not post the same message twice into a channel people are reading.
What can I build with the Microsoft Teams integration?
A common starting point: have a customer choose the team and channel each kind of notification from your product should land in. Teams also use it for the other use cases listed above, and expose it to agents for governed reads and writes.
How much does the Microsoft Teams integration cost?
It is included. Pricing is based on connected accounts, not on how many connectors you enable, so adding Microsoft Teams does not change your per-connector cost. You can start free with 3 connected accounts.
Add Microsoft Teams to your product
Start free with 3 connected accounts. No sales call required, and no per-customer integration code.