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Agent skill

Testing

by nex-agi in nex-agi/NexRL

Run tests and linting for NexRL Python project. An agent skill from nex-agi/NexRL.

Apache-2.0Auto-check passedDevelopment

Install Testing

skills CLI
$ npx skills add nex-agi/NexRL --skill testing -a claude-code

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

GitHub CLI
$ gh skill install nex-agi/NexRL 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/nex-agi/NexRL.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.claude/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/

Facts

Skill name
testing
GitHub stars
119
Token cost
~350 tokens
SKILL.md length
55 words
Files
1
Skills in repo
6
Repo updated
First seen
Licence
Apache-2.0

At a glance

Run tests and linting for NexRL Python project. An agent skill from nex-agi/NexRL.

  • Tasks that involve Linting and formatting
  • SKILL.md covers Test Suite, Linting, Formatting Check and Pre-commit (all checks), plus 3 more sections
  • Calls python and git

What it does

Testing is an agent skill from nex-agi/NexRL. Run tests and linting for NexRL Python project.

Its SKILL.md is about 350 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 Development, covering Linting and formatting. It works with Python. The repository describes itself as: NexRL is an ultra-loosely-coupled LLM post-training framework. The licence is Apache-2.0.

When your agent uses it

  • Tasks that involve Linting and formatting

Example prompts

  • “/testing”

Requirements

  • Python 3

What it can do on your machine

Read from SKILL.md and the folder at commit 53dcdec. 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:

    • python
    • git

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

  • Network

    No URLs in SKILL.md. Its commands use git, 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

Testing loads about 350 tokens when it runs. Until then it costs about 14 tokens; SKILL.md has 55 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~14
When it runs · the whole SKILL.md, loaded when a task matches
~350

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

The full file from nex-agi/NexRL at commit 53dcdec, republished under its Apache-2.0 licence (© nex-agi). 55 words, ~350 tokens.

Download SKILL.mdSave it as .claude/skills/testing/SKILL.md (or your agent's skills folder).
name
testing
description
Run tests and linting for NexRL Python project.

Testing Skill

Test Suite

bash
# All tests
python -m pytest tests/ -v --tb=short

# Unit tests only
python -m pytest tests/unittests/ -v

# Specific test file
python -m pytest tests/unittests/test_foo.py -v

# By marker
python -m pytest tests/ -m unit -v
python -m pytest tests/ -m "not slow" -v

Linting

bash
# pylint (non-test files)
python -m pylint nexrl/ --rcfile=.pylintrc -rn -sn

# mypy
python -m mypy nexrl/ --ignore-missing-imports

# License header check
python tests/lint/check_license_header.py <files>

Formatting Check

bash
# Check (don't fix)
python -m black --check nexrl/ tests/
python -m isort --check nexrl/ tests/

# Fix
python -m black nexrl/ tests/
python -m isort nexrl/ tests/

Pre-commit (all checks)

bash
pre-commit run --all-files

Worktree Usage

When running in a worktree, ensure you're in the worktree directory:

bash
# Ensure you're in the worktree root
cd "$(git rev-parse --show-toplevel)"
python -m pytest tests/ -v --tb=short

Test Markers

  • unit — Unit tests
  • integration — Integration tests
  • slow — Slow running tests

Notes

  • Tests belong in tests/ only (per .ai-instructions/developing/testing-and-examples.md)
  • Never create temporary test files or ad-hoc example scripts
  • Python 3.12+ required

© nex-agi, Apache-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in .claude/skills/testing of nex-agi/NexRL.

Open the folder on GitHubat commit 53dcdec

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
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Testing this skillnex-agi/NexRL119—~350Automated safety check: PassApache-2.0
Kedro Babysitkedro-org/kedro11k—~4kAutomated safety check: PassCustom licence
Saleor Commit Workflowsaleor/saleor23k—~575Automated safety check: PassBSD-3-Clause
Qt6 QML Code Reviewerx-tools-author/x-tools1.1k1 repos~3.6kAutomated safety check: PassBSD-3-Clause
Python Project Creatorhaddock-development/claude-reflect-system379—~1.4kAutomated safety check: NotesNone
Adk Setupgoogle/adk-python22k—~993Automated safety check: NotesApache-2.0

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More from nex-agi/NexRL

  • Address PR Comments

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    119 GitHub stars~420 tokensUpdated 20 days ago
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  • Fix Issue

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    Fix a GitHub issue using git worktree for isolation. An agent skill from nex-agi/NexRL.

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  • Code Review

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    Code review for Python changes in NexRL, following project conventions.

    119 GitHub stars~395 tokensUpdated 20 days ago
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  • Git Commit

    nex-agi/NexRL

    Git commit workflow in a worktree with Python linting, formatting, and testing.

    119 GitHub stars~380 tokensUpdated 20 days ago
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  • GitHub PR

    nex-agi/NexRL

    Create a GitHub PR from a worktree branch. An agent skill from nex-agi/NexRL.

    119 GitHub stars~367 tokensUpdated 20 days ago
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Works with

Categories

Questions about Testing

What does Testing do?

Run tests and linting for NexRL Python project. An agent skill from nex-agi/NexRL. Testing is an agent skill from nex-agi/NexRL. Run tests and linting for NexRL Python project.

When should I use Testing?

Testing fits situations like: tasks that involve Linting and formatting.

How do I install Testing in Claude Code?

Run `npx skills add nex-agi/NexRL --skill testing -a claude-code`. Or copy the skill folder (.claude/skills/testing in nex-agi/NexRL) 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 nex-agi/NexRL --skill testing -a codex`. Or copy the skill folder (.claude/skills/testing in nex-agi/NexRL) 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 nex-agi/NexRL --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?

Going by SKILL.md and its folder, Testing needs the command-line tools its instructions call (python and git). Our summary lists: Python 3.

Does Testing access the network?

SKILL.md contains no URLs. Its commands use git, which can reach the network depending on how they are called. 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 is published under the Apache-2.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Testing use?

About 350 tokens (SKILL.md is roughly 1.4k 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 Testing?

Skills that share tags, products or a category with Testing: Kedro Babysit (kedro-org/kedro, 11k stars), Saleor Commit Workflow (saleor/saleor, 23k stars), Qt6 QML Code Reviewer (x-tools-author/x-tools, 1.1k stars) and Python Project Creator (haddock-development/claude-reflect-system, 379 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Testing?

nex-agi (a GitHub organization) maintains it in nex-agi/NexRL, which has 119 GitHub stars. The repository holds 6 skills in this directory. The repository was last updated on September 17, 2026.

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