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Agent skill

Cime Sys Testing

by ESMCI in ESMCI/cime

A skill your agent uses when writing or modifying CIME sys (end-to-end) tests.

Custom licenceAuto-check passedTesting & QA

Install Cime Sys Testing

skills CLI
$ npx skills add ESMCI/cime --skill cime-sys-testing -a claude-code

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

GitHub CLI
$ gh skill install ESMCI/cime cime-sys-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/ESMCI/cime.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/cime-sys-testing .claude/skills/cime-sys-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/

Facts

Skill name
cime-sys-testing
GitHub stars
174
Token cost
~475 tokens
SKILL.md length
184 words
Files
1
Skills in repo
3
Repo updated
First seen
Licence
Custom licence

At a glance

A skill your agent uses when writing or modifying CIME sys (end-to-end) tests.

  • Works in 7 steps: Identify the feature and conditions for… → Place test in matching… → Write tests for target feature. → …
  • Modifying CIME sys (end-to-end) tests
  • SKILL.md covers Overview, When to use, Required frameworks and style and Test structure, plus 4 more sections
  • Calls docker

What it does

Cime Sys Testing is an agent skill from ESMCI/cime. Use when writing or modifying CIME sys (end-to-end) tests.

Its SKILL.md is about 480 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Testing & QA. The repository describes itself as: Common Infrastructure for Modeling the Earth.

When your agent uses it

  • Modifying CIME sys (end-to-end) tests

Example prompts

  • “/cime-sys-testing”

Requirements

  • Python 3
  • Docker

Workflow steps

7 steps, taken from the first numbered list in SKILL.md.

  1. Identify the feature and conditions for end-to-end test.
  2. Place test in matching CIME/tests/test_sys_.py.
  3. Write tests for target feature.
  4. Run tests.
  5. Test outputs are located in ${PWD}/storage. If you cannot access, ask user to fix permissions, then continue.
  6. If tests failed, return to step 3 and adjust the test.
  7. Check for regression.

What it can do on your machine

Read from SKILL.md and the folder at commit 7ccc464. 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:

    • docker

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

  • Network

    No URLs in SKILL.md. Its commands use docker, which can reach the network depending on how they are called.

    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

Cime Sys Testing loads about 475 tokens when it runs. Until then it costs about 19 tokens; SKILL.md has 184 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~19
When it runs · the whole SKILL.md, loaded when a task matches
~475

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 184 words (~475 tokens).

“Use this skill when writing/modifying python system tests under CIME/tests that are prefixed with test_sys.”

— opening of SKILL.md by ESMCI, Custom licence
name
cime-sys-testing

Read the full SKILL.md on GitHub

Files

Just SKILL.md in .agents/skills/cime-sys-testing of ESMCI/cime.

Open the folder on GitHubat commit 7ccc464

Compare with similar skills

Cime Sys 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.

Cime Sys Testing compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Cime Sys Testing this skillESMCI/cime174—~475Automated safety check: PassCustom licence
Web Application Testinganthropics/skills180k51 repos~966Automated safety check: PassApache-2.0
Diagnosing Bugsfossasia/eventyay-interpretation1.6k32 repos~2.1kAutomated safety check: PassApache-2.0
TDDpietheinstrengholt/rssmonster56430 repos~906Automated safety check: PassMIT
TDD WorkflowhellangleZ/burn-in-cceverywhere-ralph11211 repos~2.4kAutomated safety check: PassNone
TDDsanity-io/sanity6.4k20 repos~1kAutomated safety check: PassMIT

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Categories

Questions about Cime Sys Testing

What does Cime Sys Testing do?

A skill your agent uses when writing or modifying CIME sys (end-to-end) tests. Cime Sys Testing is an agent skill from ESMCI/cime. Use when writing or modifying CIME sys (end-to-end) tests.

When should I use Cime Sys Testing?

Cime Sys Testing fits situations like: modifying CIME sys (end-to-end) tests.

How do I install Cime Sys Testing in Claude Code?

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

How do I install Cime Sys Testing in Codex?

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

Can I use Cime Sys 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 ESMCI/cime --skill cime-sys-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/cime-sys-testing, .gemini/skills/cime-sys-testing, .github/skills/cime-sys-testing and .opencode/skills/cime-sys-testing in your project.

What does Cime Sys Testing need to run?

Going by SKILL.md and its folder, Cime Sys Testing needs the command-line tools its instructions call (docker). Our summary lists: Python 3; Docker.

Does Cime Sys Testing access the network?

SKILL.md contains no URLs. Its commands use docker, which can reach the network depending on how they are called. This is read from the text; nothing was executed.

Is Cime Sys 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 Cime Sys Testing use?

Cime Sys 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 Cime Sys Testing use?

About 475 tokens (SKILL.md is roughly 1.9k 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 Cime Sys Testing?

Skills that share tags, products or a category with Cime Sys Testing: Web Application Testing (anthropics/skills, 180k stars), Diagnosing Bugs (fossasia/eventyay-interpretation, 1.6k stars), TDD (pietheinstrengholt/rssmonster, 564 stars) and TDD Workflow (hellangleZ/burn-in-cceverywhere-ralph, 112 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Cime Sys Testing?

ESMCI (a GitHub organization) maintains it in ESMCI/cime, which has 174 GitHub stars. The repository holds 3 skills in this directory. The repository was last updated on October 8, 2026.

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