How to integrate Microsoft teams MCP with DeepSeek Harness

Connect DeepSeek Harness to Microsoft teams MCP. Add new member to project team, schedule an online meeting for sales, and more using natural language, with authentication handled for you.

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Microsoft Teams is a collaboration platform that combines chat, meetings, and file sharing within Microsoft 365. It keeps distributed teams connected and productive through seamless virtual communication.

150 Tools

Introduction

DeepSeek Harness (dsh) is an open-source agent runtime from DeepSeek AI, and every part of it is a plugin, so you can swap out the model adapter, the tool registry, or the agent loop. It runs on the Cordis framework and comes with a local Web UI, a headless CLI runner, and a Python SDK. You can point it at DeepSeek V4-Pro and V4-Flash, or at Anthropic, OpenAI, and other OpenAI-compatible providers. It is MIT licensed and still in developer preview.

This guide shows how to connect your Microsoft teams account to DeepSeek Harness, and you can do it with either the Composio Connect CLI or the Composio Connect MCP. The dsh-base bundle gives shell execution as a first-class tool, so the CLI is the easiest path for personal use. It is quick to set up and needs no server config, and the MCP path works well too, since the harness comes with a built-in MCP client.

Also integrate Microsoft teams with

What is Composio Connect?

Composio Connect lets anyone plug 1,000+ applications directly into their agent harness, including DeepSeek Harness, through a single hosted MCP endpoint. Each task runs as a session, a scoped runtime that ties together the user, the available toolkits, authentication, and execution state. It can:

  • Discover and load tools on-demand. A small set of meta tools lets the agent search for the right tool at runtime, so you never load hundreds of tool definitions into context.
  • Chain tools in a sandboxed remote workbench. Multi-step workflows run server-side, passing outputs between tools and working with files in the session's sandbox, so long chains finish without a lot of back-and-forth with the LLM.
  • Manage authentication end-to-end. Managed OAuth, per-user connected accounts, and account isolation are all handled for you, so you never wire up auth yourself.

Connect Microsoft teams to DeepSeek Harness with Composio

Prerequisites: Install DeepSeek Harness

DeepSeek Harness needs Node.js (20 or 22) and pnpm. Build it from source. This is also what the MCP path in Option 2 requires, since the built-in MCP client resolves its dependencies from the checkout:

bash
git clone https://github.com/deepseek-ai/deepseek-harness.git
cd deepseek-harness
pnpm install
pnpm run build
pnpm dsh web

The Web UI listens on http://127.0.0.1:3080 by default. Open that address to confirm it is up.

Then configure your model route. In the Web UI, open Settings → Models: the built-in DeepSeek card accepts a DeepSeek API key, and the same page supports Anthropic, OpenAI, and custom OpenAI-compatible endpoints. Full first-run details are in the DeepSeek Harness docs.

Option 1: Composio CLI (recommended)

DeepSeek Harness runs shell commands as a first-class tool through its dsh-base bundle, so the Composio Universal CLI fits well. There is no MCP server to configure, and multi-step tool chaining is reliable. Install and authenticate:

bash
# Install the Composio CLI
curl -fsSL https://composio.dev/install | bash

# Log in to Composio
composio login

Connect to Microsoft teams

Ask DeepSeek Harness to connect to Microsoft teams, or just request any Microsoft teams-related task. Under the hood the agent calls Composio commands like any other shell tool:

bash
composio search "what can I do with Microsoft teams?"
composio link microsoft_teams

On the first Microsoft teams call, composio link microsoft_teams opens an OAuth prompt so you can authorize access. After that, every Microsoft teams command works with your stored credentials automatically, so you just talk to the agent and it will search, execute, and chain Microsoft teams tools as needed.

Option 2: Composio MCP

DeepSeek Harness bridges MCP through its built-in @deepseek-ai/dsh-mcp-client plugin. You register one server as a plugin row, and its tools appear under server-qualified names (mcp__<serverName>__<rawName>), the same shape Claude Code and Codex use.

MCP requires the source build. The built-in client depends on the harness's own internal packages (cordis, dsh-llm, dsh-tools, dsh-invariants, dsh-subprocess), which resolve from the git checkout you built in the prerequisites. Run everything below from that checkout with pnpm dsh. For a route that avoids editing config files, see the community plugin at the end of this section.

Auth note: The built-in client passes static headers only and has no OAuth flow, so authenticate to Composio Connect with the x-consumer-api-key header. For Composio's OAuth flow, use the community plugin below.

1. Register the Composio server

The web profile's user patch layer is $DSH_HOME/profiles/web/cordis.patch.yml ($DSH_HOME defaults to ~/.dsh). This is a patch file, so a new plugin goes under an insert: entry. A bare - id: row instead targets an existing entry and fails to boot with patch: entry "…" not found. Add:

bash
- insert:
    - id: mcp-composio
      name: '@deepseek-ai/dsh-mcp-client'
      config:
        serverName: composio
        transport: streamable-http
        url: https://connect.composio.dev/mcp
        headers:
          x-consumer-api-key: !!js process.env.COMPOSIO_API_KEY

2. Set the API key and launch

The header value must resolve to a string at load time. Export your Composio consumer API key (ck_...), which is on the Connect → Settings → Sessions page of the Composio dashboard, in the shell you launch from. If it is unset, process.env.COMPOSIO_API_KEY is undefined and the config fails validation:

bash
export COMPOSIO_API_KEY=ck_your_key
pnpm dsh web

3. Done!

Open http://127.0.0.1:3080 and start a session on Standard or Code mode. (Minimal mode exposes only bash and str_replace_editor, so it hides MCP tools.) Composio's tools register as mcp__composio__*. Ask DeepSeek Harness to connect to Microsoft teams or request any Microsoft teams-related task, and Composio authorizes Microsoft teams on demand on the first call.

The dsh-mcp-client config schema (transport, serverName, url, headers, plus reconnect.* and toolCallTimeoutMs) is the current developer-preview interface and may change between releases.

Alternative: OAuth via the community plugin

To use Composio Connect's OAuth flow instead of a static key, or to skip editing cordis.patch.yml by hand, use the community dsh-mcp-manager plugin. It installs as a self-contained external plugin, ships a bundle patch so it auto-mounts, and adds a Settings → MCP page plus OAuth (authorization code + PKCE, RFC 7591 dynamic client registration, and refresh-token rotation). It needs the web profile and Node.js ^22.19 or >=24, with pnpm on your PATH.

Install it from your source checkout, then restart pnpm dsh web and refresh:

bash
pnpm dsh plugin --profile web add github:hyqhyq3/dsh-mcp-manager

Open Settings → MCP → + Add MCP server, choose HTTP, set the name to composio, the URL to https://connect.composio.dev/mcp, and the auth mode to OAuth. Click Authenticate, and Composio's login and consent screen opens in the browser, then redirects back and registers the tools as mcp__composio__*. The row should read connected (N tools).

The plugin catches the OAuth code on a loopback redirect (http://127.0.0.1:<port>/mcp-manager/callback/<id>), so Composio's OAuth provider must allow that loopback URL. Server configs and tokens persist at ~/.dsh/mcp-manager.json, so treat that file as a secret. Being a community plugin on a preview harness, its commands may change, so check the plugin repo if a step drifts.

What is the Microsoft teams MCP server, and what's possible with it?

The Microsoft Teams MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Microsoft Teams account. It provides structured and secure access to your Teams workspace, so your agent can perform actions like managing chats, sending messages, creating meetings, and organizing teams on your behalf.

  • Automated chat and message management: Let your agent retrieve, read, and summarize messages from any Teams chat, or fetch all chats you’re part of for quick updates.
  • Team and channel organization: Easily create new teams, add members, get channel details, or archive and delete teams to keep your workspace organized.
  • Scheduling online meetings: Have your agent schedule standalone Teams meetings instantly, making it simple to coordinate with colleagues or clients without manual setup.
  • Granular access to team and chat details: Fetch full information about specific teams, channels, or even individual messages with precision, enabling rich contextual workflows.
  • Seamless membership and collaboration management: Add or update members in teams with a prompt, ensuring the right people always have access to the conversations and resources they need.

Way Forward

With Microsoft teams connected, DeepSeek Harness can now act on your behalf whenever you ask it to.

From here, you can extend the harness further:

  • Connect more apps: Calendar, Slack, Notion, Linear, and hundreds of others are available through the same Composio Connect setup, and each new integration adds to what your agent can do for you.
  • Build workflows across tools: Once multiple apps are connected, DeepSeek Harness can chain actions together, so it can turn an email into a calendar invite, a Slack message into a Linear ticket, or a meeting note into a follow-up draft.
  • Use the plugin system: Wrap common Microsoft teams flows as dsh plugins or prompt templates so recurring tasks become one-line commands, and bundle your most-used Microsoft teams tools into a named profile you can boot on demand.

If you run into trouble or want to share what you've built, join the community or check out the Docs for more configuration options.

TOOLS

Supported Tools

Every Microsoft teams action and event your agent gets out of the box.

Add chat member

Tool to add a conversationMember to a Microsoft Teams chat.

Add tab to channel

Tool to add a new tab to a Microsoft Teams channel.

Add member to team

Tool to add a user to a Microsoft Teams team.

Add team members (bulk)

Tool to add multiple members to a Microsoft Teams team in a single operation.

Archive channel

Tool to archive a channel in a Microsoft Teams team.

Archive team channel

Tool to archive a channel in a Microsoft Teams team using the group ID.

Archive Teams team

Tool to archive a Microsoft Teams team.

Get all chats

Retrieves all Microsoft Teams chats a specified user is part of, supporting filtering, property selection, and pagination.

Clear Automatic Location

Tool to clear the automatic location from a user's presence in Microsoft Teams.

Clear User Preferred Presence

Tool to clear a user's preferred presence setting in Microsoft Teams.

Clear Presence

Tool to clear the presence information for a user's application presence session in Microsoft Teams.

Clear Presence Location

Tool to clear the authenticated user's presence location.

Clone Team

Tool to clone a Microsoft Teams team using the team ID.

Create Call Operation

Tool to create a new operation for a communications call.

Create a channel

Tool to create a new standard, private, or shared channel within a Microsoft Teams team.

Create Content Sharing Session

Tool to create a content sharing session in a Microsoft Teams call.

Create channel in group team

Tool to create a new channel in a group's associated team.

Create online meeting

Use to schedule a new standalone Microsoft Teams online meeting, i.

Create user offer shift request

Tool to create a new offer shift request in a user's joined team schedule.

Create open shifts

Tool to create a new open shift in a Microsoft Teams team schedule.

Create open shift change request

Tool to create a new open shift change request in a team schedule.

Create or get online meeting

Tool to create a new Microsoft Teams online meeting or retrieve an existing one based on externalId.

Create or update schedule

Tool to create or replace a schedule object for a Microsoft Teams team.

Create schedule day note

Tool to create a new day note in a team's schedule.

Create scheduling group

Tool to create a new scheduling group in a team's schedule.

Create team schedule shift

Tool to create a new shift in a Microsoft Teams team schedule.

Create Team

Tool to create a new Microsoft Teams team.

Create Team From Group

Tool to create a new team under an existing Microsoft 365 group.

Create time off

Tool to create a new timeOff instance in a team's schedule.

Create time off reason

Tool to create a new time off reason in a team's schedule.

Create time off request

Tool to create a new time off request in a team's schedule.

Create user online meeting

Tool to create a new Microsoft Teams online meeting for a specific user.

Delete Call Operation

Tool to delete a navigation property operation for a communications call.

Delete team channel

Tool to delete a channel from a Microsoft Teams team.

Delete team schedule day note

Tool to delete a day note from a Microsoft Teams schedule.

Delete open shift

Tool to delete an open shift from a Microsoft Teams schedule.

Delete team scheduling group

Tool to delete a scheduling group from a Microsoft Teams team schedule.

Delete team schedule shift

Tool to delete a shift from a Microsoft Teams team schedule.

Soft-delete Teams channel message

Tool to soft-delete a message in a Teams channel.

Delete channel tab

Tool to delete a tab from a Microsoft Teams channel.

Delete Teams team

Tool to delete a Microsoft Teams team.

Delete time off

Tool to delete a timeOff from a team's schedule.

Delete time off reason

Tool to delete a time off reason from a team's schedule.

Delete time off request

Tool to delete a time off request from a Microsoft Teams team schedule.

Delete User Online Meeting

Tool to delete an online meeting for a user.

Get call operation

Tool to get a specific commsOperation for a call.

Get team channel

Tool to get a specific channel in a team.

Get Teams channel message

Retrieves a specific message from a Microsoft Teams channel using its Team, Channel, and Message IDs.

Get channel message reply

Tool to retrieve a single reply to a message in a channel.

Get chat

Tool to retrieve a single chat by ID.

Get chat member

Tool to get a specific conversation member from a Microsoft Teams chat.

Get chat message

Tool to get a specific chat message.

Get day note

Tool to retrieve a specific day note from a team's schedule.

Get channel files folder

Tool to get the files folder (DriveItem) metadata for a specific channel in a Microsoft Teams team.

Get User Profile

Tool to retrieve a user's profile (id/UPN/mail/displayName).

Get offer shift request

Tool to get a specific offer shift request from a Microsoft Teams schedule.

Get online meeting

Tool to retrieve details of a specific Microsoft Teams online meeting by its ID.

Get open shift

Tool to get a specific open shift from a Microsoft Teams schedule.

Get open shift change request

Tool to retrieve a specific open shift change request from a Microsoft Teams team's schedule.

Get User Presence

Tool to get a specific user's presence information.

Get primary channel

Tool to get the default (General) channel of a team.

Get schedule

Tool to retrieve the properties and relationships of a schedule object.

Get scheduling group

Tool to retrieve a specific scheduling group from a Microsoft Teams team's schedule.

Get shift

Tool to retrieve a shift by ID from a Microsoft Teams team schedule.

Get swap shifts change request

Tool to get a specific swap shift change request from a Microsoft Teams schedule.

Get channel tab

Tool to get a specific tab in a Microsoft Teams channel.

Get Team

Tool to get a specific team.

Get team member

Tool to get a specific conversation member from a team.

Get Team Operation Status

Tool to retrieve the status of a Teams async operation using teamId and operationId.

Get installed app in team

Tool to get an installed app in a Microsoft Teams team.

Get time off by ID

Tool to retrieve a specific time off entry from a Microsoft Teams team's schedule by ID.

Get time off reason

Tool to get a specific time off reason from a team's schedule.

Get time off request

Tool to retrieve a specific time off request from a team's schedule.

Get user chat

Tool to retrieve a specific chat for a user.

Get User Teamwork

Tool to get userTeamwork settings for a specified user, including Microsoft Teams region and locale.

Hide chat for user

Tool to hide a Microsoft Teams chat for a specific user.

List user's associated teams

Tool to list teams that a user is associated with in Microsoft Teams.

List channel tabs

Tool to list tabs from a Microsoft Teams channel.

List Communications Call Operations

Tool to list operations on a Microsoft Teams call.

List deleted teams

Tool to list deleted Microsoft Teams and their properties.

List Group Team Operations

Tool to list operations on a group's team.

List team incoming channels

Tool to list incoming channels shared with a Microsoft Teams team.

List installed apps in team

Tool to list apps installed in a Microsoft Teams team.

List channel message replies

Tool to list all replies to a specific message in a Microsoft Teams channel.

List offer shift requests

Tool to list offer shift requests in a Microsoft Teams schedule.

List user online meetings

Look up a Microsoft Teams online meeting for a user by identifier.

List open shift change requests

Tool to list open shift change requests in a Microsoft Teams schedule.

List open shifts

Tool to list open shifts in a Microsoft Teams schedule.

List People

Retrieves a list of people relevant to a specified user from Microsoft Graph, noting the `search` parameter is only effective if `user_id` is 'me'.

List pinned messages

Tool to retrieve the list of pinned messages in a Microsoft Teams chat.

List team schedule day notes

Tool to list all dayNotes from a team's schedule.

List scheduling groups

Tool to list scheduling groups in a team's schedule.

List shifts

Tool to list shifts in a Microsoft Teams schedule.

List swap shifts change requests

Tool to list swap shift change requests in a Microsoft Teams schedule.

List team members

Tool to list members of a Microsoft Teams team.

List Team Operations

Tool to list operations from a team.

List teams permission grants

Tool to list all resource-specific permission grants for a team with support for filtering, pagination, and sorting.

List team time off entries

Tool to list time off entries from a Microsoft Teams team's schedule.

List team schedule time off reasons

Tool to get time off reasons from a team's schedule.

List time off requests

Tool to retrieve a list of time off requests from a Microsoft Teams team's schedule.

List user's chat members

Tool to list members of a specific chat for a user in Microsoft Teams.

List user chat messages

Tool to retrieve messages from a specific chat for a given user.

List user joined teams

Tool to list the Teams that a specified user is a direct member of (joined teams).

List users

Tool to list all users in the organization.

Mark chat as read for user

Tool to mark a chat as read for a specific user in Microsoft Teams.

Mark chat as unread for user

Marks a specific chat as unread for a user by setting the last read message timestamp.

Pin message in chat

Tool to pin a message in a Microsoft Teams chat.

Reply to Teams channel message

Sends a reply to an existing message, identified by `message_id`, within a specific `channel_id` of a given `team_id` in Microsoft Teams.

Provision channel email address

Tool to provision an email address for a Microsoft Teams channel.

Remove channel email address

Tool to remove the email address of a channel in Microsoft Teams.

Remove chat member

Tool to remove a member from a Microsoft Teams chat.

Remove team member

Tool to remove a member from a Microsoft Teams team.

Remove team members

Tool to remove multiple members from a Microsoft Teams team in bulk.

Search Teams files

Search files in Microsoft Teams using KQL syntax.

Search Teams messages

Search Microsoft Teams messages using powerful KQL syntax.

Send Activity Notification to Recipients

Tool to send activity notifications to specified recipients in Microsoft Teams.

Set Presence

Tool to set the presence information for a user's application presence session.

Set Presence Automatic Location

Tool to set the automatic presence location (office/remote/timeOff) for a specified user.

Set User Preferred Presence

Tool to set the preferred availability and activity status for a user.

Set User Presence Manual Location

Tool to set the manual presence location (office/remote/timeOff) for a specific user.

Share Team Schedule

Tool to share a Microsoft Teams schedule for a specified time range.

Create Chat

Creates a new chat; if a 'oneOnOne' chat with the specified members already exists, its details are returned, while 'group' chats are always newly created.

List Teams

Retrieves Microsoft Teams accessible by the authenticated user, allowing filtering, property selection, and pagination.

List channel messages

Tool to list messages in a Teams channel when team_id and channel_id are known (no chat_id required).

List team channels

Retrieves channels for a specified Microsoft Teams team ID (must be valid and for an existing team), with options to include shared channels, filter results, and select properties.

Send Channel Message

Posts a new top-level message to a channel in Microsoft Teams (does NOT reply to an existing message).

Send message to Teams chat

Sends a non-empty message (text or HTML) to a specified, existing Microsoft Teams chat; content must be valid HTML if `content_type` is 'html'.

Unarchive channel

Tool to unarchive a channel in a Microsoft Teams team.

Unarchive group team channel

Tool to unarchive a channel in a Microsoft Teams group's team.

Unarchive Teams team

Tool to unarchive a Microsoft Teams team.

Unhide Chat For User

Tool to unhide a chat for a specific user.

Unpin chat message

Tool to unpin a message from a Microsoft Teams chat.

Update Call

Tool to update the navigation property calls in Microsoft Teams communications.

Update Call Operation

Tool to update the navigation property operations in communications.

Update Call Participant

Tool to update a participant in a Microsoft Teams call.

Update Teams channel

Tool to update channel properties in a Microsoft Teams group.

Update Teams channel message

Tool to update a message in a channel.

Update Chat

Tool to update the properties of a chat.

Update Teams chat message

Tool to update a specific message in a chat.

Update Content Sharing Session

Tool to update a content sharing session in a Microsoft Teams call.

Update schedule day note

Tool to update an existing day note in a team's schedule.

Update online meeting

Tool to update the properties of an existing Microsoft Teams online meeting.

Update open shift

Tool to update an existing open shift in a Microsoft Teams team schedule.

Update scheduling group

Tool to replace/update a scheduling group in a team's schedule.

Update Teams channel tab

Tool to update the properties of a tab in a Microsoft Teams channel.

Update Team

Tool to update the properties of a team.

Update team member

Tool to update a team member's roles or properties in Microsoft Teams.

Update team schedule shift

Tool to update an existing shift in a Microsoft Teams team schedule.

Update time off

Tool to replace an existing timeOff entry in a team's schedule.

Update time off reason

Tool to update a time off reason in a team's schedule.

FAQ

Frequently asked questions

With a standalone Microsoft teams MCP server, the agents and LLMs can only access a fixed set of Microsoft teams tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Microsoft teams and many other apps based on the task at hand, all through a single MCP endpoint.

Yes, you can. DeepSeek Harness fully supports MCP integration. You get structured tool calling, message history handling, and model orchestration while Tool Router takes care of discovering and serving the right Microsoft teams tools.

Yes, absolutely. You can configure which Microsoft teams scopes and actions are allowed when connecting your account to Composio. You can also bring your own OAuth credentials or API configuration so you keep full control over what the agent can do.

All sensitive data such as tokens, keys, and configuration is fully encrypted at rest and in transit. Composio is SOC 2 Type 2 compliant and follows strict security practices so your Microsoft teams data and credentials are handled as safely as possible.

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