Benjamin Guinet contributed to the SPAAM-community/AncientMetagenomeDir repository by delivering two targeted data management features focused on expanding metagenomic metadata. He enhanced material coverage by updating JSON-based material definitions and enums, introducing new material options to improve data completeness and searchability. Additionally, he extended the sample host metadata by adding Mammuthus trogontherii, broadening the scope for downstream analyses. His work was closely aligned with the Guinet2025 data refresh, ensuring traceability through well-documented commits. Benjamin’s approach demonstrated proficiency in data management and JSON schema updates, addressing specific project needs with focused, auditable changes over a one-month development period.