This appears to be a genuine LinkedIn Company Page publishing skill, but it requests broader LinkedIn organization-admin permission than its posting workflow needs and handles long-lived tokens in a risky way.
Install only if you are comfortable granting this skill LinkedIn Company Page publishing power. Before authorizing OAuth, review the consent screen and avoid approving organization-admin permissions unless you specifically need them. Store tokens in a secure secret manager or tightly permissioned local file, revoke/rotate them if exposed, and use `--dry-run` plus explicit human approval before any live post.