Would also recommend using commands like:

echo '#include <sys/syscall.h>' | gcc -E -dM -xc - | grep -i "read"

To get the real values on your PC to make sure.

I had LLMs give wrong numbers or constant definitions several times but getting it to generate a command like this and seeing it for myself works every time.

Also chromium docs has a table:

https://www.chromium.org/chromium-os/developer-library/refer...

It would be very useful to just make this website directly link to the syscall number.

The website content comes directly from Kernel sources so should be accurate. The chromium page is what I used to use until I made this website in 2020 but it's very outdated I think