Frantisek Rehor developed targeted job execution functionality for the keboola/mcp-server repository, enabling the MCP Tool to run jobs for specific configuration row IDs rather than all rows. He extended the JobsQueueClient and updated the run_job method to support an optional config_row_ids parameter, aligning the tool’s API with the underlying Queue API. Using Python, Frantisek focused on backend and API development, incorporating comprehensive tests to validate row-level execution and prevent regressions. This work improved reproducibility and efficiency by narrowing job scopes, accelerating feedback for configuration changes, and maintaining consistency with existing tooling, demonstrating thoughtful engineering within a focused feature.