The package layout provides all available details:

- Description.

- Filename.

- Version.

- Base package.

- Arch.

- Repo.

- Groups.

- Upstream URL.

- License.

- Maintainers.

- Packager.

- Package size.

- Installed size.

- Build date.

- Last updated.

- Flag date.

- Dependencies.

- Make dependencies.

- Check dependencies.

- Optional dependencies.

- Conflicts.

- Provides.

- Replaces.

- Files.

Supported repos:

- core.

- extra.

- testing.

- multilib.

- multilib-testing.

- community.

- community-testing.

Supported architecures:

- any.

- x86_64.

Supported flags:

- All.

- Flagged.

- Not Flagged.

It supports the same query parameters as the HTML search form, except for Maintainer (todo), Packager (todo) and sort (not exposed by the API).

I use Arch BTW.

Creator