diff --git a/cogs/dev_tools.py b/cogs/dev_tools.py
index d996722..e724184 100644
--- a/cogs/dev_tools.py
+++ b/cogs/dev_tools.py
@@ -108,7 +108,9 @@ class DevToolsCog(commands.Cog):
     @group_dev.command(
         name="refractor-test", description="Run refractor integration test on a card"
     )
-    @app_commands.describe(card_id="The batting or pitching card ID to test")
+    @app_commands.describe(
+        card_id="Card-instance ID (from the unified cards table; discoverable via /refractor status)"
+    )
     async def refractor_test(self, interaction: discord.Interaction, card_id: int):
         await interaction.response.defer()