urfave/cli

A declarative, simple, fast, and fun package for building command line tools in Go

Source code at GitHub https://cli.urfave.org

{
  "createdAt": "2013-07-13T19:32:06Z",
  "defaultBranch": "main",
  "description": "A declarative, simple, fast, and fun package for building command line tools in Go",
  "fullName": "urfave/cli",
  "homepage": "https://cli.urfave.org",
  "language": "Go",
  "name": "cli",
  "pushedAt": "2025-11-25T01:55:08Z",
  "stargazersCount": 23731,
  "topics": [
    "cli",
    "command-line",
    "go",
    "golang-library",
    "json",
    "toml",
    "yaml"
  ],
  "updatedAt": "2025-11-27T06:51:42Z",
  "url": "https://github.com/urfave/cli"
}

Welcome to urfave/cli

[![Go Reference][goreference_badge]][goreference_link] [![Go Report Card][goreportcard_badge]][goreportcard_link] [![codecov][codecov_badge]][codecov_link] [![Tests status][test_badge]][test_link]

urfave/cli is a declarative, simple, fast, and fun package for building command line tools in Go featuring:

commands and subcommands with alias and prefix match support
flexible and permissive help system
dynamic shell completion for bash, zsh, fish, and powershell
no dependencies except Go standard library
input flags for simple types, slices of simple types, time, duration, and others
compound short flag support (-a -b -c can be shortened to -abc)
documentation generation in man and Markdown (supported via the [urfave/cli-docs][urfave/cli-docs] module)
input lookup from:
- environment variables
- plain text files
- structured file formats (supported via the [urfave/cli-altsrc][urfave/cli-altsrc] module)

Documentation

See the hosted documentation website at https://cli.urfave.org. Contents of this website are built from the [./docs]!(./docs) directory.

Support

Check the [Q&A discussions]. If you don’t find answer to your question, [create a new discussion].

If you found a bug or have a feature request, [create a new issue].

Please keep in mind that this project is run by unpaid volunteers.

License

See [LICENSE]!(./LICENSE).