# Reference Documentation

Reference documentation provides detailed technical specifications for fsspeckit components.

- [API Guide](api-guide.md) – Comprehensive API overview and usage patterns
- [Multi-Key API Reference](multi-key-api.md) – PyArrow multi-key vectorization helper functions
- [Adaptive Key Tracking](adaptive-key-tracking.md) – Advanced technical reference for AdaptiveKeyTracker
- [Utils Reference](utils.md) – Utility functions and helpers