Capstone supports an impressive breadth of architectures. However, if all you need is x86/AMD64 decoding and disassembly, there are much higher quality (in terms of accurate decoding) libraries out there.

I wrote a differential fuzzer for x86 decoders a few years ago, and XED and Zydis generally performed far better (in terms of accuracy) than Capstone[1]. And on the Rust side, yaxpeax and iced-x86 perform very admirably.

[1]: https://blog.trailofbits.com/2019/10/31/destroying-x86_64-in...