Microsoft Graph API MCP Server

A Model Context Protocol (MCP) server that integrates Microsoft Graph API with Claude, enabling management of Microsoft 365 users, licenses, and groups.

Features

• User Management: Create new Microsoft 365 users

• License Management: Assign licenses to users with optional service plan customization

• Group Management: Add users to groups

• Query Operations: List available licenses, groups, and search for users

• A2A Protocol Support: Agent-to-Agent communication for automated M365 administration

Prerequisites

1. Microsoft Azure App Registration:

   • An Azure AD application with the following API permissions:

     • User.ReadWrite.All

     • Directory.ReadWrite.All

     • Group.ReadWrite.All

     • Organization.Read.All

   • Admin consent granted for these permissions

   • A client secret generated

2. Python 3.10+ and uv package manager

Setup

1. Install uv (if not already installed)

2. Clone and Setup Project

3. Configure Environment Variables

Create a .env file in the project root:

To find these values:

1. Go to Azure Portal

2. Navigate to Azure Active Directory → App registrations

3. Select your app registration

4. Tenant ID: Found in the Overview page

5. Client ID: Application (client) ID in the Overview page

6. Client Secret: Create one in Certificates & secrets

4. Configure Claude Desktop

Add the server configuration to your Claude Desktop config file:

macOS: ~/Library/Application Support/Claude/claude_desktop_config.json Windows: %APPDATA%\Claude\claude_desktop_config.json

Important: Replace /absolute/path/to/microsoft-graph-mcp with the actual absolute path to your project directory.

5. Restart Claude Desktop

After saving the configuration, restart Claude Desktop to load the MCP server.

Usage

Once configured, you can use natural language with Claude to manage your Microsoft 365 environment:

Creating Users

Assigning Licenses

Adding Users to Groups

Searching and Listing

Available Tools

The MCP server exposes the following tools to Claude:

1. create_user: Create a new Microsoft 365 user

2. assign_license: Assign a license to a user

3. add_user_to_group: Add a user to a group

4. list_available_licenses: List all available licenses in the tenant

5. list_groups: List all groups in the tenant

6. get_user: Get details for a specific user

7. search_user: Search for users by name or email

Agent-to-Agent (A2A) Protocol Support

This server supports the Agent-to-Agent (A2A) protocol, enabling automated communication and coordination between AI agents for Microsoft 365 administration tasks.

Agent Card

The agent capabilities and interface are defined in the agent-card.json file at the repository root. This card provides:

• Agent Metadata: Name, description, version, and platform information

• Protocol Information: MCP version and stdio endpoint configuration

• Capability Declaration: Tools, tasks, and streaming support

• Skill Definitions: Organized action groups for user, license, and group management

• Authentication Requirements: OAuth2 client credentials flow configuration

Available Skills

The agent provides three main skill categories for A2A communication:

1. User Management

• create_user: Provision new Microsoft 365 user accounts

• get_user: Retrieve user profile information

• search_user: Find users by name or email

2. License Management

• assign_license: Allocate Microsoft 365 licenses to users

• list_available_licenses: Query available license SKUs

3. Group Management

• add_user_to_group: Add users to security or distribution groups

• list_groups: Enumerate all groups in the tenant

Integration Examples

Agent-to-Agent User Provisioning

Automated Onboarding Workflow

An orchestrator agent can coordinate with this agent to automate employee onboarding:

1. Create User: Call create_user skill to provision account

2. Assign License: Call assign_license skill with appropriate SKU

3. Add to Groups: Call add_user_to_group for department and project groups

4. Verify: Call get_user to confirm account setup

Multi-Agent License Management

A license optimization agent can query available licenses and coordinate assignments:

Authentication for A2A

When integrating with other agents, ensure the following environment variables are configured:

The agent uses OAuth2 client credentials flow with the following required permissions:

• User.ReadWrite.All

• Directory.ReadWrite.All

• Group.ReadWrite.All

• Organization.Read.All

Discovery and Registration

Other agents can discover this agent's capabilities by reading the agent-card.json file, which follows the A2A protocol specification. The card includes:

• Complete skill definitions with input schemas

• Authentication requirements and configuration

• Endpoint information for stdio-based MCP communication

• Metadata for agent discovery and cataloging

Security Considerations

• Never commit the to version control

• Store client secrets securely

• Use the principle of least privilege when granting API permissions

• Regularly rotate client secrets

• Monitor API usage through Azure Portal

• Consider using Azure Key Vault for production deployments

Troubleshooting

Authentication Errors

If you receive authentication errors:

1. Verify your credentials in the .env file

2. Ensure admin consent is granted for all API permissions

3. Check that the client secret hasn't expired

Permission Errors

If operations fail with permission errors:

1. Verify the app has the required API permissions

2. Ensure admin consent has been granted

3. Check that the permissions are application permissions, not delegated

MCP Server Not Loading

If Claude Desktop doesn't recognize the server:

1. Check the config file path is correct

2. Verify the absolute path to the project directory

3. Look at Claude Desktop logs for errors

4. Ensure uv is installed and in your PATH

Development

Running Tests

Code Formatting

Common License SKU IDs

Here are some common Microsoft 365 license SKU IDs:

• Microsoft 365 E3: 05e9a617-0261-4cee-bb44-138d3ef5d965

• Microsoft 365 E5: 06ebc4ee-1bb5-47dd-8120-11324bc54e06

• Microsoft 365 Business Basic: 3b555118-da6a-4418-894f-7df1e2096870

• Microsoft 365 Business Standard: f245ecc8-75af-4f8e-b61f-27d8114de5f3

• Microsoft 365 Business Premium: cbdc14ab-d96c-4c30-b9f4-6ada7cdc1d46

Note: SKU IDs may vary by tenant. Use the list_available_licenses tool to see your specific SKU IDs.

API Rate Limits

Microsoft Graph API has rate limits. The server handles basic error responses, but for production use, consider implementing:

• Exponential backoff

• Request queuing

• Rate limit monitoring

License

MIT License - See LICENSE file for details

Contributing

Contributions are welcome! Please feel free to submit issues or pull requests.

Resources

• Microsoft Graph API Documentation

• Model Context Protocol Documentation

• Azure App Registration Guide