Agent Skills

Updated Oct 23, 2026

Fireargs ships Agent Skills that tell coding agents such as Claude Code, Cursor and Codex how a Fireargs CLI works. Once installed, your agent knows how serde fields become arguments and options, how to wire a subcommand tree and how to drive a CLI through --json and --llms. You don't have to explain any of it in the prompt.

Install from the website

fireargs.dev publishes its skills under /.well-known/agent-skills/, so the skills CLI can install them from the site URL. Run this at your project root:

npx skills add https://fireargs.dev

It asks which skills and agents to install for; the site also serves the TypeScript and Python skills, so pick the fireargs-rust-* ones. To skip the prompts, pass them as flags:

npx skills add https://fireargs.dev --skill fireargs-rust-commands --agent claude-code

Add --global to install for your user instead of the project, and --list to see what's available without installing anything. Run npx skills update later to pull newer versions.

Install from the package

The skills also ship inside the crate, at skills/ in its source directory under Cargo's registry. Installing them from there keeps them matched to the Fireargs version in your Cargo.lock, while the website always serves the latest release:

manifest=$(cargo metadata --format-version 1 \
  | jq -r '.packages[] | select(.name == "fireargs") | .manifest_path')
npx skills add "$(dirname "$manifest")/skills"

Run it from your crate's directory; cargo metadata downloads the crate first when needed.

Use them

You don't need to invoke a skill yourself. Agents read each skill's description and load it when a task matches. For example, asking for a new deploy command loads fireargs-rust-commands, and asking to group commands under a db subcommand loads fireargs-rust-programs. If your agent supports invoking skills by name, you can also call one directly, as with /fireargs-rust-automation in Claude Code.

See also

• LLMs mode — the --llms manifest an agent reads at runtime, rather than while writing code.