Worked on the phidatahq/phidata repository to address stability issues in parser-driven flows for multi-tool agents. Focused on backend and API development using Python, delivering a targeted bug fix that prevents grammar compilation errors when both an output schema and a parser model are present. The solution involved refining tool gating logic to skip strict mode enforcement on the base model when a parser_model is set, ensuring consistent structured outputs and reducing the risk of 400 grammar size errors. The change was validated across synchronous and asynchronous paths, with clear documentation and collaborative review, emphasizing maintainability and robust unit testing practices.