Teams Message Posting: "Missing body content" Error

[malikmalikayesha]

Description

Teams message posting consistently fails with 400 Bad Request - Missing body content error, even when body content is provided through the MCP server.

Expected Behavior

Teams messages should post successfully when using the send-channel-message tool with proper content and contentType.

Actual Behavior

API returns:

Microsoft Graph API error: 400 Bad Request - {"error":{"code":"BadRequest","message":"Missing body content"}}

Root Cause

Microsoft Graph API requires nested body structure, but the server passes parameters directly:

Current (fails):

{
  "content": "Test message",
  "contentType": "text"
}

Required by Microsoft Graph:

{
  "body": {
    "content": "Test message",
    "contentType": "text"
  }
}

Workaround

Manually nest the body structure:

{
  "body": {
    "body": {
      "content": "Test message",
      "contentType": "text"
    }
  }
}

Proposed Solution

Update src/graph-tools.ts to transform Teams message payloads to match Microsoft Graph API requirements.

Screenshots

Post in Teams: