Microsoft Teams APIConnect Microsoft Teams without building on its API
Microsoft Teams has a REST API through Microsoft Graph. Self-serve for developers with a Microsoft 365 tenant that includes Teams, via Entra app registration; application permissions need admin consent. If you're reading the docs because you need Microsoft Teams to talk to the rest of your stack, Caddi does that without you writing or maintaining integration code: you show it the job once, and it runs it across Microsoft Teams and your other tools.
- APIREST (JSON)
- AuthOAuth 2.0
- AccessSelf-serve
What the Microsoft Teams API gives you
- Type
- REST (JSON)
- Authentication
- OAuth 2.0 via Microsoft Entra ID (delegated or application permissions)
- Who can get access
- Self-serve for developers with a Microsoft 365 tenant that includes Teams, via Entra app registration; application permissions need admin consent.
- What it covers
- Teams, channels, chats, messages, members, tabs, apps, and online meetings.
- Limits
- Per-endpoint throttling across per-app, per-app-per-tenant, per-resource and per-user dimensions (e.g., GET /teams/{id} is 1,500 rps per app, 30 rps per app per tenant, 4 rps per team).
- Worth knowing
- Posting chat/channel messages with application (app-only) permissions is supported only for migration.
Official docs: learn.microsoft.com. Checked September 2026. Vendors change access terms, so confirm with Microsoft Teams before you build.
Building on the Microsoft Teams API vs. having Caddi run it
| The job | Build it on the API | With Caddi |
|---|---|---|
| Getting access | Register an app, get Microsoft Teams credentials, and manage tokens and refreshes. | Connect your Microsoft Teams account once. Caddi holds the connection. |
| Writing the integration | A developer maps fields, handles pagination, retries and rate limits, and writes the sync. | You show Caddi the Microsoft Teams task the way you'd train a new hire. It writes verified code for it. |
| Steps the API doesn't cover | Screens with no endpoint stay manual, or need a separate RPA tool. | Caddi uses a secure, audited browser session where there's no API, in the same automation. |
| The other systems in the loop | Each extra tool is another API, another set of credentials, another integration to own. | One automation runs across all the tools the job touches. |
| Keeping it running | Someone owns the code when the API version, fields or your process change. | Every automation is reviewed before it runs in production, and every run is logged. |
Building on the API is the right call when you have engineers and the integration is your product. When the goal is getting Microsoft Teams work off someone's desk, the build is the slow part.
What teams usually want the Microsoft Teams API for
Approval flow
Caddi posts an approval request in the right Teams channel, captures the response, and writes the decision back to the source system.
Meeting follow-up
When a Teams meeting ends, Caddi writes notes to the CRM and posts the action items back to the channel.
Critical-event notify
When a high-priority event lands in email or the CRM, Caddi posts to the relevant Teams channel with full context.
Microsoft Teams API questions
Does Microsoft Teams have an API?
Yes. Microsoft Teams has a REST API through Microsoft Graph, authenticated with OAuth 2.0 via Microsoft Entra ID (delegated or application permissions). The official documentation is at https://learn.microsoft.com/en-us/graph/teams-concept-overview.
How do I get access to the Microsoft Teams API?
Self-serve for developers with a Microsoft 365 tenant that includes Teams, via Entra app registration; application permissions need admin consent.
Does the Microsoft Teams API have rate limits?
Per-endpoint throttling across per-app, per-app-per-tenant, per-resource and per-user dimensions (e.g., GET /teams/{id} is 1,500 rps per app, 30 rps per app per tenant, 4 rps per team).
Can I connect Microsoft Teams to my other tools without writing code against its API?
Yes. With Caddi you show the Microsoft Teams task once, the way you'd train a new hire, and Caddi builds it as verified code that runs across Microsoft Teams and the other tools the job touches. Where a step has no API, Caddi uses a secure, audited browser session in the same automation.
Do I need a developer to automate Microsoft Teams with Caddi?
No. There is no integration code for you to write or maintain. Every automation Caddi builds for Microsoft Teams is reviewed before it runs in production, and every run is logged.
Connect Microsoft Teams without the build.
Drop your work email and pick a time. We'll show you Caddi running your Microsoft Teams workflow end to end.