villebro commented on code in PR #36458:
URL: https://github.com/apache/superset/pull/36458#discussion_r2669372435


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superset/mcp_service/common/schema_discovery.py:
##########
@@ -0,0 +1,422 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+"""
+Schema discovery models for MCP tools.
+
+These schemas provide comprehensive metadata about available columns,
+filters, and sorting options for each model type (chart, dataset, dashboard).
+Column metadata is extracted dynamically from SQLAlchemy models.
+"""
+
+from typing import Any, Dict, List, Literal, Type

Review Comment:
   Nit, we should use `dict`, `list`, `"my_literal"` instead of these: 
   ```suggestion
   from typing import Any, Type
   ```
   



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