diff --git a/server.py b/server.py
index a96e5a5..89bf393 100644
--- a/server.py
+++ b/server.py
@@ -134,7 +134,7 @@ def _rate_limit_note(response_headers: httpx.Headers | None = None) -> str:
 
 mcp = FastMCP(
     "GitHub Intelligence",
-    description=(
+    instructions=(
         "Query GitHub repositories, issues, pull requests, contributors, "
         "and search across all of GitHub — directly from Claude."
     ),