Misc small changes (#1070)

Author: esoteric-ephemera

mp_api/mcp/server.py

@@ -16,9 +16,8 @@
 
 MCP_SERVER_INSTRUCTIONS = """
 This MCP server defines search and document retrieval capabilities
-for data in the Materials Project.
-Use the search tool to find relevant documents based on materials
-keywords.
+for data in the Materials Project (https://next-gen.materialsproject.org/).
+Use the search tool to find relevant documents based on materials keywords.
 Then use the fetch tool to retrieve complete materials summary information.
 """
 
@@ -82,5 +81,5 @@ def _run_mp_mcp_server() -> None:
     mcp.run(**parse_server_args())
 
 
-if __name__ == "__main__":
+if __name__ == "__main__":  # pragma: no cover
     _run_mp_mcp_server()

tests/mcp/test_server.py

@@ -10,7 +10,7 @@
     )
 
 from mp_api.client.core.exceptions import MPRestError
-from mp_api.mcp.server import get_core_mcp, parse_server_args
+from mp_api.mcp.server import get_core_mcp, parse_server_args, MCP_SERVER_INSTRUCTIONS
 
 
 async def get_mcp_tools():
@@ -35,6 +35,10 @@ def test_mcp_server():
     fetch_tool = asyncio.run(get_mcp_tool("fetch"))
     assert fetch_tool.parameters["properties"] == {"idx": {"type": "string"}}
 
+    mcp_server = get_core_mcp()
+    assert isinstance(mcp_server, fastmcp.FastMCP)
+    assert mcp_server.instructions == MCP_SERVER_INSTRUCTIONS
+
 
 def test_server_cli():
     assert parse_server_args(