Ruff v0.16.0, a significant update to the Python linting tool, introduces a new default rule set that grows from 59 to 413 rules aimed at catching critical issues in code. This update substantially increases the linting coverage and automates more coding standards checks, making it easier for developers to maintain quality code without extensive configuration. The author shares experiences of running Ruff on major projects, revealing hundreds of minor code issues and how automated tools like Codex can assist in resolving them.