- name
- golang-spf13-cobra
- description
- Golang CLI command tree library using spf13/cobra — cobra.Command, RunE vs Run, PersistentPreRunE hook chain, Args validators (NoArgs, ExactArgs, MatchAll, custom), persistent vs local flags, command groups, ValidArgsFunction, RegisterFlagCompletionFunc, ShellCompDirective, usage/help template customization, man-page and markdown doc generation, and testing with SetArgs/SetOut/SetErr. Apply when using or adopting spf13/cobra, or when the codebase imports `github.com/spf13/cobra`. For configuration layering alongside cobra, see the `samber/cc-skills-golang@golang-spf13-viper` skill. For general CLI architecture (project layout, exit codes, signal handling, I/O patterns), see `samber/cc-skills-golang@golang-cli`.
- user-invocable
- true
- license
- MIT
- compatibility
- Designed for Claude Code, Codex or similar harness, and for projects using Golang.
- metadata
- author: samber version: "1.1.2" openclaw: emoji: "🐍" homepage: https://github.com/samber/cc-skills-golang requires: bins: - go install: [] skill-library-version: "1.10.2"
- allowed-tools
- Read Edit Write Glob Grep Bash(go:*) Bash(golangci-lint:*) Bash(git:*) Agent WebFetch mcp__context7__resolve-library-id mcp__context7__query-docs Bash(godig:*) Bash(gopls:*) LSP mcp__gopls__*
- paths
- - "**/*.go"
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:
- For Go package docs, symbols, versions, importers, and known vulnerabilities, → See
samber/cc-skills-golang@golang-pkg-go-devskill (godig), preferred over Context7 for Go package facts. - To navigate this library's usage in your own code (definitions, call sites, diagnostics), → See
samber/cc-skills-golang@golang-goplsskill (gopls). - Context7 remains a fallback for docs not indexed on pkg.go.dev.
go get github.com/spf13/cobra@latest
Cobra vs. viper
These libraries do fundamentally different things and can be used independently.