Unfragile

structopt-derive is a Rust crate for deriving command-line parsers from structs; none of the candidate sources document that crate directly. The closest matches are crates.io, the Rust package registry where it is published 2, and docopt, a language for describing command-line interfaces 6, though docopt is a different approach to CLI parsing and is not a Rust derive macro.

1
crates.ioamazon.comverified and signed
Rust Package Registry where the structopt-derive crate is published, letting you find and install it into a Rust project 2.
Website
official:MCP server · mcp-proxy-for-awsSDK · @aws-sdk/types library · aws-lc-sys CLI · awscli repository · tools-for-devops-agent+190 community tools built for it
for agents: aws · aws-transform · pandas
2
docoptdocopt.orgverified and signed
A language for describing a command-line interface from a help-message style spec, as an alternative approach to deriving a parser 6.
Website
for agents: optparse · argparse · parsing

Sources

2crates.io: Rust Package Registrycrates.io · read just now
6docopt—language for description of command-line interfacesdocopt.org · read 2026-10-29

For agents: the 10 actions behind this answer

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