diff --git a/packages/opencode/src/provider/provider.ts b/packages/opencode/src/provider/provider.ts
index 37eb7841..6ce8c27c 100644
--- a/packages/opencode/src/provider/provider.ts
+++ b/packages/opencode/src/provider/provider.ts
@@ -322,6 +322,10 @@ export namespace Provider {
       ...t,
       parameters: optionalToNullable(t.parameters),
     })),
+    azure: TOOLS.map((t) => ({
+      ...t,
+      parameters: optionalToNullable(t.parameters),
+    })),
     google: TOOLS,
   }