codeant-ai-for-open-source[bot] commented on PR #38731:
URL: https://github.com/apache/superset/pull/38731#issuecomment-4085635497
## **Sequence Diagram**
This PR changes flattened MCP wrappers to convert Pydantic validation
failures into ToolError instead of leaking raw ValidationError. The new flow
returns a consistent, serializable error message that includes invalid fields
and required fields.
```mermaid
sequenceDiagram
participant Client
participant FlattenedWrapper
participant RequestModel
participant ToolFunction
Client->>FlattenedWrapper: Call tool with flattened parameters
FlattenedWrapper->>RequestModel: Validate parameters
alt Validation passes
RequestModel-->>FlattenedWrapper: Parsed request model
FlattenedWrapper->>ToolFunction: Execute tool with model and context
ToolFunction-->>Client: Return tool result
else Validation fails
RequestModel-->>FlattenedWrapper: Validation error details
FlattenedWrapper-->>Client: Raise ToolError with invalid and
required fields
end
```
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