Sibo Van Gool contributed to the chroma-core/chroma repository by addressing a targeted bug in the Python codebase. During February 2025, Sibo focused on improving the clarity of error reporting by correcting a misspelling in an exception message within chromadb/api/types.py, changing 'Embedings' to 'Embeddings.' This adjustment enhanced the reliability and maintainability of the embeddings workflow by reducing potential user confusion and lowering support overhead. Sibo utilized Python, git-based workflows, and debugging skills to implement this change. The work demonstrated attention to code quality, though the scope was limited to a single, precise bug fix rather than broader feature development.