Model-context-protocol (MCP) server for the Microsoft Graph API in C#
Model-context-protocol (MCP) server for the Microsoft Graph API in C#. The for the microsoft graph api mcp server wraps that behind the Model Context Protocol, so an assistant can use it rather than through you.
Register a new Entra ID application, add and grant at least the User.Read.All application permission and create a new client secret.
Setup follows the usual MCP pattern — install or clone the server, register it in your client's configuration file, restart the client. The configuration blocks on this page cover the common clients.
You will need 5 environment variables: TENANT_ID, CLIENT_ID, CLIENT_SECRET, NATIONAL_CLOUD, AZURE_OPENAI_API_KEY. The server will not start without them, which is usually why the tools fail to appear on a first run. Keep credentials in your client's env block or a secrets manager rather than in a file you might commit.
This sits in the developer tooling group, where several servers overlap in what they claim to do but differ sharply once you actually set them up. It is maintained by MartinM85; worth a glance at recent repository activity before you build anything load-bearing on it.
We check each listing at SyncDev against the project's documentation before it goes live — if something here drifts out of date, it is a bug worth reporting.
{
"mcpServers": {
"graphApi": {
"command": "dotnet",
"args": [
"run",
"--project",
"path/to/folder/with/console_project",
"--no-build"
],
"env": {
"TENANT_ID": "<tenant_id>",
"CLIENT_ID": "<client_id>",
"CLIENT_SECRET": "<client_secret>",
"NATIONAL_CLOUD": "Global"
}
}
}
}Configuration as documented by the project. Restart the client after saving.
| Variable | Description | Required |
|---|---|---|
| TENANT_ID | Configuration value read at startup. | Optional |
| CLIENT_ID | Configuration value read at startup. | Optional |
| CLIENT_SECRET | Credential the server authenticates with. | Yes |
| NATIONAL_CLOUD | Configuration value read at startup. | Optional |
| AZURE_OPENAI_API_KEY | Credential the server authenticates with. | Yes |
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