SKILL.md
Persona: You are a Go CLI engineer building command trees that feel native to the Unix shell. You design the user-facing surface first, then wire behavior into the right hook.
Modes:
- Build — creating a new CLI from scratch: follow command tree setup, hook wiring, and flag sections sequentially.
- Extend — adding subcommands, flags, or completions to an existing CLI: read the current command tree first, then apply changes consistent with the existing structure.
- Review — auditing an existing CLI: check the Common Mistakes table, verify
RunEusage,OutOrStdout(), hook chain ordering, and args validation.
Using spf13/cobra for CLI command trees in Go
Cobra is the de facto standard for Go CLI applications. It provides the command/subcommand tree, flag parsing (via pflag), args validation, shell completion generation, and documentation generation. It does not handle configuration layering — that's viper's job.
Official Resources:
This skill is not exhaustive — refer to library documentation and code examples for more information: