feat(mcp): add Microsoft 365 (Graph) server to the MCP catalog (#43099)

* feat(mcp): add Microsoft 365 (Graph) server to the MCP catalog

* fix(mcp): signpost the self-hosted Microsoft 365 URL and pin the catalog entry in tests

* test(mcp): pin both shipped copies of a catalog icon to the same bytes

---------

Co-authored-by: mateo-berri <277851410+mateo-berri@users.noreply.github.com>

litellm/proxy/_experimental/out/assets/logos/microsoft_365.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" role="img" aria-label="Microsoft 365"><rect x="1" y="1" width="10.5" height="10.5" fill="#F25022"/><rect x="12.5" y="1" width="10.5" height="10.5" fill="#7FBA00"/><rect x="1" y="12.5" width="10.5" height="10.5" fill="#00A4EF"/><rect x="12.5" y="12.5" width="10.5" height="10.5" fill="#FFB900"/></svg>

litellm/proxy/mcp_registry.json

@@ -217,6 +217,17 @@
         {"name": "GOOGLE_CLIENT_SECRET", "description": "Google OAuth Client Secret", "secret": true}
       ]
     },
+    {
+      "name": "microsoft_365",
+      "title": "Microsoft 365 (Graph)",
+      "description": "Outlook mail and calendar, OneDrive and SharePoint files, and Teams through Microsoft Graph, with each user's own Entra ID sign-in. Self-hosted: run ms-365-mcp-server next to the proxy and point the URL at it",
+      "icon_url": "/ui/assets/logos/microsoft_365.svg",
+      "category": "Productivity",
+      "registry_url": "https://registry.modelcontextprotocol.io/servers/io.github.Softeria%2Fms-365-mcp-server",
+      "transport": "http",
+      "url": "http://localhost:3000/mcp",
+      "env_vars": []
+    },
     {
       "name": "obsidian",
       "title": "Obsidian",

tests/unit/proxy/_experimental/mcp_server/test_mcp_discovery.py

@@ -1,5 +1,6 @@
 import json
 import os
+from typing import Final
 
 import pytest
 
@@ -95,10 +96,42 @@ class TestMCPRegistryFile:
         with open(registry_path, "r") as f:
             data = json.load(f)
         names = {s["name"] for s in data["servers"]}
-        expected = {"github", "slack", "postgresql", "snowflake", "atlassian"}
+        expected = {"github", "slack", "postgresql", "snowflake", "atlassian", "microsoft_365"}
         missing = expected - names
         assert not missing, f"Missing well-known servers: {missing}"
 
+    def test_microsoft_365_is_a_self_hosted_streamable_http_server(self, registry_path):
+        """The Graph server runs next to the proxy in org mode, so the entry must be streamable HTTP at /mcp."""
+        with open(registry_path, "r") as f:
+            data = json.load(f)
+        entry: Final = next(s for s in data["servers"] if s["name"] == "microsoft_365")
+        assert entry["transport"] == "http"
+        assert entry["url"].endswith("/mcp")
+        assert entry["category"] == "Productivity"
+        assert "ms-365-mcp-server" in entry["registry_url"]
+
+    def test_bundled_icons_exist(self, registry_path):
+        """An icon served from the proxy's own assets ships twice, as the built copy the wheel packages and as
+        the dashboard source copy every Docker image rebuilds from. Both must exist and match or a card goes blank."""
+        with open(registry_path, "r") as f:
+            data = json.load(f)
+        proxy_dir: Final = os.path.dirname(registry_path)
+        built_logos_dir: Final = os.path.join(proxy_dir, "_experimental", "out", "assets", "logos")
+        source_logos_dir: Final = os.path.join(
+            proxy_dir, "..", "..", "ui", "litellm-dashboard", "public", "assets", "logos"
+        )
+        bundled: Final = [s for s in data["servers"] if s.get("icon_url", "").startswith("/ui/assets/logos/")]
+        assert bundled, "at least one registry entry ships its own icon"
+        for server in bundled:
+            file_name: Final = os.path.basename(server["icon_url"])
+            built: Final = os.path.join(built_logos_dir, file_name)
+            source: Final = os.path.join(source_logos_dir, file_name)
+            assert os.path.isfile(built), f"{server['name']}: {server['icon_url']} missing from the built dashboard"
+            assert os.path.isfile(source), f"{server['name']}: {server['icon_url']} missing from the dashboard source"
+            with open(built, "rb") as built_file, open(source, "rb") as source_file:
+                same_bytes: Final = built_file.read() == source_file.read()
+            assert same_bytes, f"{server['name']}: built and source copies of {file_name} differ"
+
     def test_env_vars_structure(self, registry_path):
         with open(registry_path, "r") as f:
             data = json.load(f)

ui/litellm-dashboard/public/assets/logos/microsoft_365.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" role="img" aria-label="Microsoft 365"><rect x="1" y="1" width="10.5" height="10.5" fill="#F25022"/><rect x="12.5" y="1" width="10.5" height="10.5" fill="#7FBA00"/><rect x="1" y="12.5" width="10.5" height="10.5" fill="#00A4EF"/><rect x="12.5" y="12.5" width="10.5" height="10.5" fill="#FFB900"/></svg>