gocyclo

Gocyclo installs quickly via go install and runs instantly on Go source files, providing complexity scores without heavy dependencies or configuration, as emphasized in its simple usage examples.

The -over flag triggers a non-zero exit code when functions exceed a set complexity, making it easy to integrate into CI/CD pipelines for automated quality enforcement, as described in the flags section.

Supports ignoring files with regex via -ignore and individual functions with //gocyclo:ignore directives, allowing targeted analysis without modifying code structure, demonstrated in the README examples.

The -top flag highlights the most complex functions, helping teams quickly identify and address high-risk areas, which aligns with the tool's philosophy of improving maintainability.