Yes! Books are a foundational form of research output for all types of scholarship, but especially so for the social sciences, humanities, and arts. At the time of writing this, there are more than 5.6M scholarly books already indexed in OpenAlex. You can view or explore them in more detail using this link.
We currently have more books indexed than our competitors and have plans to continue expanding our coverage of books in the summer of 2025. And the quality of open research metadata for books continues to advance every month because of great initiatives like the Directory of Open Access Books and Thoth Open Metadata.