Agent skill

Rust

by ccusage in ccusage/ccusage

Guides ccusage Rust implementation work. An agent skill from ccusage/ccusage.

Custom licenceAuto-check passed

Install Rust

skills CLI
$ npx skills add ccusage/ccusage --skill rust -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install ccusage/ccusage rust --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/ccusage/ccusage.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/rust .claude/skills/rust && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
rust
GitHub stars
19k
Token cost
~1.1k tokens
SKILL.md length
512 words
Files
1
Skills in repo
17
Repo updated
First seen
Licence
Custom licence

At a glance

Guides ccusage Rust implementation work. An agent skill from ccusage/ccusage.

  • Editing rust/crates
  • SKILL.md covers Behavior Parity, Visibility, Pricing Embedding and Validation
  • Calls just, cargo and git
  • Adapter module layout

What it does

Rust is an agent skill from ccusage/ccusage. Guides ccusage Rust implementation work. Use when editing rust/crates or rust/adapters, adapter module layout, crate visibility and hawk findings, embedded pricing, or Rust behavior parity.

Its SKILL.md is about 1.1k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It works with Rust.

When your agent uses it

  • Editing rust/crates
  • Adapter module layout
  • Crate visibility and hawk findings
  • Embedded pricing

Example prompts

  • “Use the rust skill to guide ccusage Rust implementation work. An agent skill from ccusage/ccusage”
  • “/rust”

What it can do on your machine

Read from SKILL.md and the folder at commit 5ca8d8e. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    Shell commands in SKILL.md call:

    • just
    • cargo
    • git
    • nix

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    Links to these hosts (documentation or services it may open):

    • github.com

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Rust loads about 1.1k tokens when it runs. Until then it costs about 49 tokens; SKILL.md has 512 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~49
When it runs · the whole SKILL.md, loaded when a task matches
~1.1k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 512 words (~1,098 tokens).

“The native Rust CLI is the production implementation. rust/adapters/ holds one crate per usage source; rust/crates holds everything not tied to a single source.”

— opening of SKILL.md by ccusage, Custom licence
name
rust
paths
rust/**/*.rs, rust/**/*.toml, rust/**/build.rs
globs
rust/**/*.rs,rust/**/*.toml,rust/**/build.rs

Read the full SKILL.md on GitHub

Files

Just SKILL.md in .agents/skills/rust of ccusage/ccusage.

Open the folder on GitHubat commit 5ca8d8e

Compare with similar skills

Rust next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Rust compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Rust this skillccusage/ccusage19k—~1.1kAutomated safety check: PassCustom licence
Update V8 Versionopeninterpreter/openinterpreter69k2 repos~845Automated safety check: PassApache-2.0
Firecrawl Page Scrape Integrationfirecrawl/firecrawl190k1 repos~944Automated safety check: PassISC
Migrate Core Code to Submodulestinyhumansai/openhuman42k—~2.6kAutomated safety check: PassGPL-3.0
Rust TDD Workflowrtk-ai/rtk83k—~753Automated safety check: NotesApache-2.0
Rust Best Practicesfarm-fe/farm5.6k3 repos~1.1kAutomated safety check: PassMIT

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Works with

Questions about Rust

What does Rust do?

Guides ccusage Rust implementation work. An agent skill from ccusage/ccusage. Rust is an agent skill from ccusage/ccusage. Guides ccusage Rust implementation work.

When should I use Rust?

Rust fits situations like: editing rust/crates; adapter module layout; crate visibility and hawk findings; embedded pricing.

How do I install Rust in Claude Code?

Run `npx skills add ccusage/ccusage --skill rust -a claude-code`. Or copy the skill folder (.agents/skills/rust in ccusage/ccusage) into .claude/skills/rust in your project. Claude Code loads it when a task matches its description.

How do I install Rust in Codex?

Run `npx skills add ccusage/ccusage --skill rust -a codex`. Or copy the skill folder (.agents/skills/rust in ccusage/ccusage) into .agents/skills/rust in your project. Codex loads it when a task matches its description.

Can I use Rust in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add ccusage/ccusage --skill rust -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/rust, .gemini/skills/rust, .github/skills/rust and .opencode/skills/rust in your project.

What does Rust need to run?

Going by SKILL.md and its folder, Rust needs the command-line tools its instructions call (just, cargo, git and nix).

Does Rust access the network?

SKILL.md names 1 domain. As links in the text: github.com. This is read from the text; nothing was executed.

Is Rust safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Rust use?

Rust has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.

How many tokens does Rust use?

About 1.1k tokens (SKILL.md is roughly 4.4k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Rust?

Skills that share tags, products or a category with Rust: Update V8 Version (openinterpreter/openinterpreter, 69k stars), Firecrawl Page Scrape Integration (firecrawl/firecrawl, 190k stars), Migrate Core Code to Submodules (tinyhumansai/openhuman, 42k stars) and Rust TDD Workflow (rtk-ai/rtk, 83k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Rust?

ccusage (a GitHub organization) maintains it in ccusage/ccusage, which has 18,912 GitHub stars. The repository holds 17 skills in this directory. The repository was last updated on October 8, 2026.

Source: ccusage/ccusage on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.