# Mcp Server Graph Api

> Model-context-protocol (MCP) server for the Microsoft Graph API in C#

- **Type:** MCP server
- **Install:** `agentstack add mcp-martinm85-mcp-server-graph-api`
- **Verified:** Yes — security-reviewed for prompt injection and unsafe behavior
- **Seller:** [MartinM85](https://agentstack.voostack.com/s/martinm85)
- **Installs:** 0
- **Category:** [Integrations](https://agentstack.voostack.com/c/integrations)
- **Latest version:** 0.1.0
- **License:** MIT
- **Upstream author:** [MartinM85](https://github.com/MartinM85)
- **Source:** https://github.com/MartinM85/mcp-server-graph-api

## Install

```sh
agentstack add mcp-martinm85-mcp-server-graph-api
```

Requires the [AgentStack CLI](https://agentstack.voostack.com/docs/cli). Works with Claude Code, Cursor, and any MCP-compatible agent.

## About

# MCP Server for the Microsoft Graph Api
Model-context-protocol (MCP) server for the Microsoft Graph API in C#.

## Prerequisites

### Entra ID application

Register a new Entra ID application, add and grant at least the `User.Read.All` application permission and create a new client secret.

You can grant also another permissions, it depends on what you want to ask AI about your tenant through the Microsoft Graph API.

### Claude Desktop app

I'm using the [Claude Desktop app](https://claude.ai/download), but I think you can use any other MCP clients, including GitHub Copilot if they allow to add local MCP server.

## MCP server

Open and build the solution.

### MCP server configuration

Open the `claude_desktop_config.json` file. On Windows, the file should be located in **\%APPDATA%\Claude\\** folder.

Add the MCP Server. Under the `args` section, specify the path to project folder. Don't forget to set the details about the Entra ID application like tenant id, client id and client secret under the `env` section.

By default, Microsoft Graph global service is used. You can change it by modifying the `NATIONAL_CLOUD` environment variable.

Possible values for the `NATIONAL_CLOUD` are:

- **Global**: https://graph.microsoft.com - Microsoft Graph global service
- **US_GOV**: https://graph.microsoft.us - Microsoft Graph for US Government L4
- **US_GOV_DOD**: https://dod-graph.microsoft.us - Microsoft Graph for US Government L5 (DOD)
- **China**: https://microsoftgraph.chinacloudapi.cn - Microsoft Graph China operated by 21Vianet
- **Germany**: https://graph.microsoft.de - Microsoft Graph for Germany

```
{
    "mcpServers": {
        "graphApi": {
            "command": "dotnet",
            "args": [
                "run",
                "--project",
                "path/to/folder/with/console_project",
                "--no-build"
            ],
            "env": {
                "TENANT_ID": "",
                "CLIENT_ID": "",
                "CLIENT_SECRET": "",
                "NATIONAL_CLOUD": "Global"
            }
        }
    }
}
```

## Run MCP server

When you open Claude Desktop app, the MCP server should be automatically discovered and run. You can start new chat.

If Claude Desktop app was already open, you need to close (quit it in system tray) and reopen it.

In case of any issues, you can check logs in **\%APPDATA%\Claude\\logs**.

## MCP Client

The MCP client allows you to connect the MCP server.

Tools exposed by the MCP server can be invoked either by Claude AI (via Anthropic Claude API) or by any model deployed to Azure OpenAI Service.

You need to set the Anthropic API key in the `AnthropicService.GetAnthropicApiKey()` method.

```
private static string GetAnthropicApiKey()
{
    return "";
}
```

For Azure OpenAI Service, you need to 
- **API key**: set either the `AZURE_OPENAI_API_KEY` environment variable or specify the key in the `AzureOpenAIServiceGetOpenAIApiKey()` method
- **Azure OpenAI endpoint**: set either the `AZURE_OPENAI_ENDPOINT` environment variable or specify the endpoint in the `AzureOpenAIService.GetOpenAIEndpoint()` method

## Source & license

This open-source MCP server is cataloged on AgentStack and links to its original source — we do not rehost the code.

- **Author:** [MartinM85](https://github.com/MartinM85)
- **Source:** [MartinM85/mcp-server-graph-api](https://github.com/MartinM85/mcp-server-graph-api)
- **License:** MIT

Install and usage instructions live in the source repository linked above.

## Pricing

- **Free** — Free

## Security capabilities

Automated source analysis of v0.1.0 — what this tool can access:

- **Network access:** no
- **Filesystem access:** no
- **Shell / process execution:** no
- **Environment & secrets:** no
- **Dynamic code execution:** no

*"Yes" means the capability is present in the source — more access means more to trust, not that it is unsafe.*


## Versions

- **0.1.0** — security scan: passed — Imported from the upstream source.

## Links

- Listing page: https://agentstack.voostack.com/l/mcp-martinm85-mcp-server-graph-api
- Seller: https://agentstack.voostack.com/s/martinm85
- Browse the marketplace: https://agentstack.voostack.com/browse

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Listed on AgentStack — the marketplace for AI agent skills and MCP servers. Every listing is security-reviewed. Creators keep 70%.