In December 2025, Sam Maclellan enhanced the promptfoo/promptfoo repository by implementing provider-aware Google Sheets export functionality. He developed a feature in TypeScript that automatically includes the provider name in column headers when exporting results, allowing users to distinguish outputs from multiple providers within a single sheet. This change addressed the challenge of manual reconciliation in multi-provider workflows and improved the reliability of analytics derived from exported data. Sam applied full stack development and testing skills to ensure the feature integrated smoothly with existing workflows, maintained code quality standards, and delivered traceable, well-documented changes through clear commit messages.