> For the complete documentation index, see [llms.txt](https://documentation.alluxio.io/ee-ai-en/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://documentation.alluxio.io/ee-ai-en/ai-3.5/api.md).

# Client APIs

- [Alluxio Python Filesystem API based on FSSpec](https://documentation.alluxio.io/ee-ai-en/ai-3.5/api/fsspec.md)
- [FUSE based POSIX API](https://documentation.alluxio.io/ee-ai-en/ai-3.5/api/fuse-based-posix-api.md)
- [Client Writeback](https://documentation.alluxio.io/ee-ai-en/ai-3.5/api/fuse-based-posix-api/client-writeback.md)
- [S3 API](https://documentation.alluxio.io/ee-ai-en/ai-3.5/api/s3-api.md)