Content & Documents · Integration
Microsoft Office
Add Microsoft Office to your product for your customers, and give your AI agents governed access to it.
Embed a Microsoft Office integration so your product works with the Office documents your customers already keep in their own Microsoft 365 storage, rather than asking them to download and re-upload files. One connection covers the Office file types your product touches: read a document's contents, generate a new one from your own data, convert it to PDF, and file it in the right folder under the customer's existing permissions. fastn handles per-tenant OAuth, token refresh, large-file upload sessions and API upkeep. If your product only needs one application, the Microsoft Word, Excel and Microsoft SharePoint connectors cover those individually.
In your product
Embedded for your customers. Per-tenant auth, no per-customer code, maintained by fastn.
Let customers connect their own Microsoft 365 account so your product opens their Word, Excel and PowerPoint files in place.
Generate a document from data your product already holds, then file it in the customer's own folder with their permissions intact.
Convert an Office document to PDF for signing, sharing or archiving without running a conversion service yourself.
React when a document is added or changed in a watched folder, so your product picks it up without anyone pressing upload.
For your AI agents
Governed, audited access for the agents you build, through the MCP server.
An agent reads an Office document the user points it at, within the access that user already has.
An agent produces a draft document and saves it to the customer's storage, with the write logged.
An agent reacts to a new document in a folder and extracts what your workflow needs from it.
Example prompt
Take the figures in this workbook, write a one-page summary as a Word document and save it in the same folder.
Set up Microsoft Office in 4 steps
- 01Open the Microsoft Office connector from your fastn dashboard.
- 02Have each customer authenticate their own Microsoft 365 account with the file scopes your product needs.
- 03Choose the folders and file types your product works with, then enable actions and triggers.
- 04Call them from your product, or expose them to an agent through the MCP server.
Why teams use the Microsoft Office integration
What you get by embedding it with fastn instead of building it yourself.
- Ship a Microsoft Office integration without building it. Your customers connect their own Microsoft Office account inside your product and work their files, documents and versions there, with no per-customer code on your side.
- Handle the part that actually costs time: permissions and versioning are easy to get subtly wrong, and mistakes expose content. fastn owns the auth, token refresh, rate limits, pagination and breaking-change fixes, so a Microsoft Office update is not your on-call problem.
- One integration serves your product and your agents. The same governed Microsoft Office connection powers in-product features and gives AI agents scoped, audited access, so you let your product work with your customers' documents in place without wiring it twice.
Used by these teams
Compare with
Microsoft WordWorks well with
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AsanaMicrosoft Office integration FAQ
How do I add a Microsoft Office integration to my product?
Enable the Microsoft Office connector in your fastn dashboard, then let each customer authenticate their own Microsoft Office account. fastn handles the OAuth flow, token storage and refresh per tenant, so there is no Microsoft Office 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 Office account?
Yes. Every connection is scoped to the individual customer, so each authorises their own Microsoft Office account and only ever sees their own files, documents and versions. 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 Office 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 agent reads an Office document the user points it at, within the access that user already has.
Who maintains the Microsoft Office integration?
fastn does. When Microsoft Office 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.
Whose permissions does the Microsoft Office integration run under?
Each customer's own Microsoft Office grant. Where Microsoft Office holds a library, their existing folder and item permissions apply and your product cannot reach content the connected account could not reach itself. Where it processes content you supply rather than storing it, the call runs under that customer's own credentials and is logged per tenant.
Can my product create or update content in Microsoft Office automatically?
Where Microsoft Office supports writes, documents, entries and assets can be created, updated and filed from your product or by an agent within scoped permissions, with each action logged. Where it is a read surface, the same connection serves reads only.
What can I build with the Microsoft Office integration?
A common starting point: connect their own Microsoft 365 account so your product opens their Word, Excel and PowerPoint files in place. 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 Office integration cost?
It is included. Pricing is based on connected accounts, not on how many connectors you enable, so adding Microsoft Office does not change your per-connector cost. You can start free with 3 connected accounts.
Add Microsoft Office to your product
Start free with 3 connected accounts. No sales call required, and no per-customer integration code.