DESCRIPTION="command-line interface tool to access and manage your Bitwarden vault" HOMEPAGE="https://bitwarden.com/ https://help.bitwarden.com/article/cli/" It is written in JavaScript and builds with NPM. It would be nice to have it available in Gentoo.
see also https://gpo.zugaina.org/app-admin/bitwarden-cli-bin
Whilst I think this would be a nice addition, it's not going to be easy to port to Gentoo. Having a scan-read of https://gist.github.com/orsonteodoro/8d11c66573df1b99870be40236481a0f for example, does suggest unpacking the NodeJS build system/packaging etc to work with the Gentoo ecosystem is non-trivial, but you could give it a try. Probably best to stick to the -bin package Jonas suggests. I'll watch this bug for activity nonetheless.
Added in GURU with https://github.com/gentoo/guru/commit/5f7bddeb202efe247732b216b76b43046cd8d168 and there is also source variant with https://github.com/gentoo/guru/commit/c7737650e9b4faaa9069cf70a62d4816a16e4238