# clap (Rust crate)

9 Hacker News commenters recommended clap (Rust crate) and 4 criticized it, November 2025 to November 2026. It was recommended in 9 of 13 months.

**Verdict:** Recommended as a declarative Rust argument parser that builds from annotated structs and emits man pages and shell completions. Critics call it large and too clever for small tools.

## Why people recommend it

- Standard, trusted Rust argument library (2 comments): "If it used one of the standard arguments-handling crates (e.g. "clap") there's no way it can happen." ([source](https://news.ycombinator.com/item?id=48916747)) "These aren't randos, these are all de-facto first party libraries." ([source](https://news.ycombinator.com/item?id=49383227))

## What people warn about

- Too clever and complex (2 comments): "Clap also uses them too much, because a CLI parameter is more complex than a struct field" ([source](https://news.ycombinator.com/item?id=46356231)) "Clap is enormous and seems way too clever for everything I do." ([source](https://news.ycombinator.com/item?id=46036953))

## Alternatives hackers recommend

- [Typer](https://hackerapproved.com/p/typer.md): 5 recommend
- [Click Python library](https://hackerapproved.com/p/click.md): 5 recommend

## Cite as

Hacker Approved, "clap (Rust crate)", https://hackerapproved.com/p/clap/ (counts from 1,795,640 Hacker News comments, November 2025 to November 2026).