cliff
A framework for creating command-line programs with multi-level commands.
Pricing
Free tier
Flat rate
Adoption
→StableLicense
Open Source
Data freshness
Verified · Jul 12, 2026Overview
What is cliff?
Cliff is a Python library that helps developers create complex and user-friendly CLI applications. It supports nested commands, making it ideal for tools that need to offer multiple levels of functionality through the command line.
Key differentiator
“Cliff stands out for its simplicity and flexibility in creating multi-level command-line interfaces, making it an ideal choice for developers who need to build complex CLI applications.”
Capability profile
Capability Radar
Honest assessment
Strengths & Weaknesses
↑ Strengths
↓ Weaknesses
API requires Python-specific patterns, TypeScript SDK is community-maintained
v0.1 to v0.2 migration required rewriting chain definitions
Official docs lack detailed examples beyond basic usage scenarios
GitHub repository has few contributors and open issues remain unresolved for months
Fit analysis
Who is it for?
✓ Best for
Developers building complex CLI applications with multiple levels of functionality.
Projects requiring a structured and user-friendly approach to command-line interfaces.
✕ Not a fit for
Applications that require real-time interaction or graphical user interface (GUI).
Scenarios where the primary focus is on web-based or mobile application development.
Cost structure
Pricing
Free Tier
Available
Open source — free to use
Starts at
$0
Model
Flat rate
Enterprise
None
Performance benchmarks
How Fast Is It?
Ecosystem
Relationships
Next step
Get Started with cliff
Step-by-step setup guide with code examples and common gotchas.