Agent skill

Testing

Guides ccusage Rust and Node tests. An agent skill from ccusage/ccusage.

Custom licenceAuto-check passedTesting & QA

Install Testing

skills CLI

$ npx skills add ccusage/ccusage --skill testing -a claude-code

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

GitHub CLI

$ gh skill install ccusage/ccusage testing --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/testing .claude/skills/testing && 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/

Paste into Claude Code

Install the "testing" agent skill from https://github.com/ccusage/ccusage/tree/main/.agents/skills/testing into .claude/skills/testing/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "testing", then confirm the skill loads.

Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

$skill-installer

$skill-installer install https://github.com/ccusage/ccusage/tree/main/.agents/skills/testing

Type this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.

skills CLI

$ npx skills add ccusage/ccusage --skill testing -a codex

Project install goes to .agents/skills/; add -g for ~/.codex/skills/.

GitHub CLI

$ gh skill install ccusage/ccusage testing --agent codex

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

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

Use ~/.agents/skills/ instead of .agents/skills for a personal install.

Codex skills documentation · loads skills from .agents/skills/

Paste into Codex

Install the "testing" agent skill from https://github.com/ccusage/ccusage/tree/main/.agents/skills/testing into .agents/skills/testing/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "testing", then confirm the skill loads.

Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add ccusage/ccusage --skill testing -a cursor

Project install goes to .agents/skills/; add -g for ~/.cursor/skills/.

GitHub CLI

$ gh skill install ccusage/ccusage testing --agent cursor

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/ccusage/ccusage.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.agents/skills/testing .cursor/skills/testing && rm -rf skills-src

Use ~/.cursor/skills/ instead of .cursor/skills for a personal install.

Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/

Paste into Cursor

Install the "testing" agent skill from https://github.com/ccusage/ccusage/tree/main/.agents/skills/testing into .cursor/skills/testing/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "testing", then confirm the skill loads.

Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

gemini skills install

$ gemini skills install https://github.com/ccusage/ccusage.git --path .agents/skills/testing

--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.

skills CLI

$ npx skills add ccusage/ccusage --skill testing -a gemini-cli

Project install goes to .agents/skills/; add -g for ~/.gemini/skills/.

GitHub CLI

$ gh skill install ccusage/ccusage testing --agent gemini-cli

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/ccusage/ccusage.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.agents/skills/testing .gemini/skills/testing && rm -rf skills-src

Use ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.

Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/

Paste into Gemini CLI

Install the "testing" agent skill from https://github.com/ccusage/ccusage/tree/main/.agents/skills/testing into .gemini/skills/testing/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "testing", then confirm the skill loads.

Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

GitHub CLI

$ gh skill install ccusage/ccusage testing

Installs for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).

skills CLI

$ npx skills add ccusage/ccusage --skill testing -a github-copilot

Project install goes to .agents/skills/; add -g for ~/.copilot/skills/.

Manual copy

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

Use ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.

GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/

Paste into GitHub Copilot

Install the "testing" agent skill from https://github.com/ccusage/ccusage/tree/main/.agents/skills/testing into .github/skills/testing/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "testing", then confirm the skill loads.

GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add ccusage/ccusage --skill testing -a opencode

OpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.

GitHub CLI

$ gh skill install ccusage/ccusage testing --agent opencode

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/ccusage/ccusage.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.agents/skills/testing .opencode/skills/testing && rm -rf skills-src

Use ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.

OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/

Paste into OpenCode

Install the "testing" agent skill from https://github.com/ccusage/ccusage/tree/main/.agents/skills/testing into .opencode/skills/testing/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "testing", then confirm the skill loads.

OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

Facts

Skill name: testing
GitHub stars: 19k
Token cost: ~314 tokens
SKILL.md length: 152 words
Files: 3 (incl. references)
Skills in repo: 17
Repo updated: Oct 9, 2026
First seen: Oct 7, 2026
Licence: Custom licence

At a glance

Guides ccusage Rust and Node tests. An agent skill from ccusage/ccusage.

Fixing cargo tests
SKILL.md covers Rust and Node
Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
Node test files

What it does

Testing is an agent skill from ccusage/ccusage. Guides ccusage Rust and Node tests. Use when adding or fixing cargo tests, Node test files, CLI snapshots, Claude model pricing, LiteLLM compatibility, or fixture-backed tests.

Its SKILL.md is about 310 tokens, which your agent loads only when the skill is triggered. The skill folder holds 3 other files, including reference files (for example `references/node-test.md` and `references/rust.md`).

It sits in Testing & QA, covering Model routing and gateways. It works with Rust.

When your agent uses it

Fixing cargo tests
Node test files
Claude model pricing
LiteLLM compatibility

Example prompts

“Use the testing skill to guide ccusage Rust and Node tests. An agent skill from ccusage/ccusage”
“/testing”

What it can do on your machine

Read from SKILL.md and the folder at commit 00429e1. 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
No scripts in the folder and no shell commands in SKILL.md.
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
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

Testing loads about 314 tokens when it runs, and up to ~1.3k if it reads all its reference files. Until then it costs about 46 tokens; SKILL.md has 152 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~46
When it runs · the whole SKILL.md, loaded when a task matches: ~314
With references · SKILL.md plus every file in references/, read only if the agent opens them: ~1.3k

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 152 words (~314 tokens).

“The tdd skill owns the Red-Green-Refactor loop and the focused runner commands. This skill owns what is specific to ccusage: fixtures, adapter coverage, pricing and model behavior, snapshots, CLI output, and package tooling.”

— opening of SKILL.md by ccusage, Custom licence

name: testing

Read the full SKILL.md on GitHub

Files

SKILL.md and 2 other files (references) in .agents/skills/testing of ccusage/ccusage.

SKILL.md
references/node-test.md
references/rust.md

Open the folder on GitHubat commit 00429e1

Compare with similar skills

Testing 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.

Testing compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Testing this skillccusage/ccusage	19k	—	~314	Automated safety check: Pass	Custom licence	today
Run Shuntpleaseai/shunt	281	—	~2.6k	Automated safety check: Pass	Apache-2.0	today
Evaluating Bitrouter Routesbitrouter/bitrouter	235	—	~1.2k	Automated safety check: Pass	Apache-2.0	yesterday
New Providerfinch-xu/cc-router	272	—	~1.6k	Automated safety check: Pass	MIT	3 days ago
Run Bitrouter Benchmarkbitrouter/bitrouter	235	—	~2.2k	Automated safety check: Pass	Apache-2.0	yesterday
Caching Architecturemajiayu000/litellm-rs	117	—	~2k	Automated safety check: Pass	MIT	yesterday

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Caching Architecture
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Questions about Testing

What does Testing do?

Guides ccusage Rust and Node tests. An agent skill from ccusage/ccusage. Testing is an agent skill from ccusage/ccusage. Guides ccusage Rust and Node tests.

When should I use Testing?

Testing fits situations like: fixing cargo tests; Node test files; Claude model pricing; liteLLM compatibility.

How do I install Testing in Claude Code?

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

How do I install Testing in Codex?

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

Can I use Testing 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 testing -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/testing, .gemini/skills/testing, .github/skills/testing and .opencode/skills/testing in your project.

What does Testing need to run?

SKILL.md names no scripts, command-line tools or credentials: Testing is instructions for the agent only.

Does Testing access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Testing 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 Testing use?

Testing 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 Testing use?

About 314 tokens (SKILL.md is roughly 1.3k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 969 tokens, read only when the agent opens those files.

What are the alternatives to Testing?

Skills that share tags, products or a category with Testing: Run Shunt (pleaseai/shunt, 281 stars), Evaluating Bitrouter Routes (bitrouter/bitrouter, 235 stars), New Provider (finch-xu/cc-router, 272 stars) and Run Bitrouter Benchmark (bitrouter/bitrouter, 235 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Testing?

ccusage (a GitHub organization) maintains it in ccusage/ccusage, which has 18,927 GitHub stars. The repository holds 17 skills in this directory. The repository was last updated on October 9, 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.

Testing

Install Testing

Facts

At a glance

What it does

When your agent uses it

Example prompts

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

Files

Compare with similar skills

Similar skills

Run Shunt

Evaluating Bitrouter Routes

New Provider

Run Bitrouter Benchmark

Caching Architecture

Config Architecture

More from ccusage/ccusage

Nushell

Rust Binary Size

Skill Creator

TDD

Commit

Create PR

Questions about Testing

Install Testing

Facts

At a glance

What it does

When your agent uses it

Example prompts

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

Files

Compare with similar skills

Similar skills

More from ccusage/ccusage

Related

Questions about Testing