Use this reference when building command-line applications with `spf13/cobra`. It shows how to organize commands, define flags, validate arguments, add lifecycle hooks, customize help output, provide shell completions, and connect flags with Viper configuration.
Use when building CLI applications with spf13/cobra — creating commands, defining flags, argument validation, lifecycle hooks, help/usage customization, shell completions, or Viper integration. Triggers on: "cobra", "cobra command", "cobra flag", "cobra subcommand", "cobra completion", "cobra help", "cobra usage", "cobra hook", "cobra viper", "AddCommand", "PersistentFlags", "LocalFlags", "MarkFlagRequired", "RunE", "PreRun", "PostRun", "PersistentPreRun", "ValidArgs", "ValidArgsFunction", "RegisterFlagCompletionFunc", "ShellCompDirective", "ExactArgs", "NoArgs", "MinimumNArgs", "MatchAll", "MarkFlagsRequiredTogether", "MarkFlagsMutuallyExclusive", "cobra-cli", "cobra completion", "cobra active help", "cobra plugin".
Run score Not tested
See how to installReview the instructions the agent will receive before you install.
Reference for building CLI applications with cobra. Covers the public API, common patterns, and best practices.
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| Keywords | Reference |
|---|---|
| Command, AddCommand, subcommand, root command, project structure, command fields, Use, Short, Long, Example, Aliases, Deprecated, Hidden, GroupID, Run, RunE | references/commands.md |
| flag, PersistentFlags, LocalFlags, required flag, flag group, required together, mutually exclusive, one required, repeated flag, count flag, string slice, TraverseChildren, MarkFlagRequired, MarkPersistentFlagRequired | references/flags.md |
| argument, positional arg, Args, NoArgs, ArbitraryArgs, MinimumNArgs, MaximumNArgs, ExactArgs, RangeArgs, OnlyValidArgs, NoDuplicateArgs, MatchAll, ValidArgs, ArgAliases, custom validator | references/arguments.md |
| hook, lifecycle, PreRun, PostRun, PersistentPreRun, PersistentPostRun, PreRunE, PostRunE, EnableTraverseRunHooks, execution order, inherited hooks | references/hooks.md |
| help, usage, template, SetHelpFunc, SetHelpTemplate, SetUsageFunc, SetUsageTemplate, version, SetVersionTemplate, help command, command grouping, GroupID, SetHelpCommandGroupId, SetCompletionCommandGroupId, ErrPrefix | references/help-usage.md |
| completion, shell completion, ValidArgs, ValidArgsFunction, CompletionFunc, RegisterFlagCompletionFunc, ShellCompDirective, NoFileCompletions, FixedCompletions, active help, AppendActiveHelp, GetActiveHelpConfig, CompletionOptions, completion command, bash, zsh, fish, powershell | references/completions.md |
| viper, config, OnInitialize, BindPFlag, config file, 12-factor, initConfig, AutomaticEnv | references/viper-integration.md |
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