codeant-ai-for-open-source[bot] commented on PR #38867:
URL: https://github.com/apache/superset/pull/38867#issuecomment-4131249923
## **Sequence Diagram**
This PR changes the MCP Flask singleton to detect an existing Flask app via
has_app_context and reuse it when running inside Superset, only creating a new
app when no app context exists, avoiding double initialization and fragile
appbuilder internals.
```mermaid
sequenceDiagram
participant CLI
participant FlaskCLI
participant MCPModule
participant FlaskApp
CLI->>FlaskCLI: Run superset mcp run
FlaskCLI->>FlaskApp: Create app and push context
FlaskCLI->>MCPModule: Import MCP flask_singleton
MCPModule->>MCPModule: Check has_app_context
alt App context exists
MCPModule->>FlaskApp: Reuse current_app for MCP service
else No app context
MCPModule->>FlaskApp: Create new Flask app for MCP service
end
```
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