The certificate tool mostly does what it claims, but the package also includes an unrelated Gitee publishing script with a hardcoded token and privileged automation surfaces that need review before use.
Review before installing. Remove upload_skill.py from the package, rotate or revoke the exposed Gitee token if it is real, use a least-privilege Baidu DNS key limited to the target zone, protect config.conf and the skill directory from untrusted writes, avoid RENEW_HOOK unless the command is fully trusted, and run scheduled renewal under the least-privileged account that can perform the task rather than SYSTEM where possible.