Agent skill

Testing Skills With Subagents

A skill your agent uses when creating or editing skills, before deployment, to verify they work under pressure and resist rationalization - applies RED-GREEN-REFACTOR cycle to process documentation…

No licenceAuto-check passedTesting & QA

Install Testing Skills With Subagents

skills CLI

$ npx skills add ed3dai/ed3d-plugins --skill testing-skills-with-subagents -a claude-code

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

GitHub CLI

$ gh skill install ed3dai/ed3d-plugins testing-skills-with-subagents --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/ed3dai/ed3d-plugins.git skills-src && mkdir -p .claude/skills && cp -r skills-src/plugins/ed3d-extending-claude/skills/testing-skills-with-subagents .claude/skills/testing-skills-with-subagents && 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-skills-with-subagents" agent skill from https://github.com/ed3dai/ed3d-plugins/tree/main/plugins/ed3d-extending-claude/skills/testing-skills-with-subagents into .claude/skills/testing-skills-with-subagents/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "testing-skills-with-subagents", 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/ed3dai/ed3d-plugins/tree/main/plugins/ed3d-extending-claude/skills/testing-skills-with-subagents

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 ed3dai/ed3d-plugins --skill testing-skills-with-subagents -a codex

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

GitHub CLI

$ gh skill install ed3dai/ed3d-plugins testing-skills-with-subagents --agent codex

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

Manual copy

$ git clone --depth 1 https://github.com/ed3dai/ed3d-plugins.git skills-src && mkdir -p .agents/skills && cp -r skills-src/plugins/ed3d-extending-claude/skills/testing-skills-with-subagents .agents/skills/testing-skills-with-subagents && 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-skills-with-subagents" agent skill from https://github.com/ed3dai/ed3d-plugins/tree/main/plugins/ed3d-extending-claude/skills/testing-skills-with-subagents into .agents/skills/testing-skills-with-subagents/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "testing-skills-with-subagents", 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 ed3dai/ed3d-plugins --skill testing-skills-with-subagents -a cursor

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

GitHub CLI

$ gh skill install ed3dai/ed3d-plugins testing-skills-with-subagents --agent cursor

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

Manual copy

$ git clone --depth 1 https://github.com/ed3dai/ed3d-plugins.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/plugins/ed3d-extending-claude/skills/testing-skills-with-subagents .cursor/skills/testing-skills-with-subagents && 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-skills-with-subagents" agent skill from https://github.com/ed3dai/ed3d-plugins/tree/main/plugins/ed3d-extending-claude/skills/testing-skills-with-subagents into .cursor/skills/testing-skills-with-subagents/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "testing-skills-with-subagents", 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/ed3dai/ed3d-plugins.git --path plugins/ed3d-extending-claude/skills/testing-skills-with-subagents

--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 ed3dai/ed3d-plugins --skill testing-skills-with-subagents -a gemini-cli

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

GitHub CLI

$ gh skill install ed3dai/ed3d-plugins testing-skills-with-subagents --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/ed3dai/ed3d-plugins.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/plugins/ed3d-extending-claude/skills/testing-skills-with-subagents .gemini/skills/testing-skills-with-subagents && 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-skills-with-subagents" agent skill from https://github.com/ed3dai/ed3d-plugins/tree/main/plugins/ed3d-extending-claude/skills/testing-skills-with-subagents into .gemini/skills/testing-skills-with-subagents/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "testing-skills-with-subagents", 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 ed3dai/ed3d-plugins testing-skills-with-subagents

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 ed3dai/ed3d-plugins --skill testing-skills-with-subagents -a github-copilot

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

Manual copy

$ git clone --depth 1 https://github.com/ed3dai/ed3d-plugins.git skills-src && mkdir -p .github/skills && cp -r skills-src/plugins/ed3d-extending-claude/skills/testing-skills-with-subagents .github/skills/testing-skills-with-subagents && 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-skills-with-subagents" agent skill from https://github.com/ed3dai/ed3d-plugins/tree/main/plugins/ed3d-extending-claude/skills/testing-skills-with-subagents into .github/skills/testing-skills-with-subagents/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "testing-skills-with-subagents", 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 ed3dai/ed3d-plugins --skill testing-skills-with-subagents -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 ed3dai/ed3d-plugins testing-skills-with-subagents --agent opencode

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

Manual copy

$ git clone --depth 1 https://github.com/ed3dai/ed3d-plugins.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/plugins/ed3d-extending-claude/skills/testing-skills-with-subagents .opencode/skills/testing-skills-with-subagents && 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-skills-with-subagents" agent skill from https://github.com/ed3dai/ed3d-plugins/tree/main/plugins/ed3d-extending-claude/skills/testing-skills-with-subagents into .opencode/skills/testing-skills-with-subagents/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "testing-skills-with-subagents", 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-skills-with-subagents
GitHub stars: 250
Used in: 3 other repos
Token cost: ~3.5k tokens
SKILL.md length: 1,440 words
Files: 2
Skills in repo: 34
Repo updated: Sep 6, 2026
First seen: Oct 7, 2026
Licence: None found

At a glance

Works in 4 steps: Explicit Negation in Rules → Entry in Rationalization Table → Red Flag Entry → …
Before deployment
SKILL.md covers Overview, When to Use, TDD Mapping for Skill Testing and RED Phase: Baseline Testing…, plus 10 more sections
Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Testing Skills With Subagents is an agent skill from ed3dai/ed3d-plugins. Use when creating or editing skills, before deployment, to verify they work under pressure and resist rationalization - applies RED-GREEN-REFACTOR cycle to process documentation by running baseline without skill, writing to address failures, iterating to close loopholes

Its SKILL.md is about 3.5k tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files (for example `examples/CLAUDE_MD_TESTING.md`).

It sits in Testing & QA, covering Test-driven development, Operations and SOPs and Subagents. The repository describes itself as: Ed's repo of Claude Code plugins, centered around a research-plan-implement workflow. Only a tiny bit cursed. If you're lucky.

When your agent uses it

Before deployment
Writing to address failures
Iterating to close loopholes

Example prompts

“/testing-skills-with-subagents”

Workflow steps

4 steps, taken from the step headings in SKILL.md.

Explicit Negation in Rules
Entry in Rationalization Table
Red Flag Entry
Update description

What it can do on your machine

Read from SKILL.md and the folder at commit 0c90f4b. 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 (its code samples are markdown and yaml).
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 Skills With Subagents loads about 3.5k tokens when it runs. Until then it costs about 75 tokens; SKILL.md has 1,440 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~75
When it runs · the whole SKILL.md, loaded when a task matches: ~3.5k

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

Without a licence we can't republish the file, so here is its outline and opening line. It has 1,440 words (~3,485 tokens).

“Testing skills is just TDD applied to process documentation.”

— opening of SKILL.md by ed3dai

name: testing-skills-with-subagents
user-invocable: false

Outline of SKILL.md

Testing Skills With Subagents
Overview
When to Use
TDD Mapping for Skill Testing
RED Phase: Baseline Testing (Watch It Fail)
Choosing the Model for RED
GREEN Phase: Write Minimal Skill (Make It Pass)
Choosing the Model for GREEN
VERIFY GREEN: Pressure Testing
Writing Pressure Scenarios
Pressure Types
Key Elements of Good Scenarios
Testing Setup
REFACTOR Phase: Close Loopholes (Stay Green)
Plugging Each Hole
1. Explicit Negation in Rules
2. Entry in Rationalization Table
3. Red Flag Entry
4. Update description
Re-verify After Refactoring
Meta-Testing (When GREEN Isn't Working)
When Skill is Bulletproof
Example: TDD Skill Bulletproofing
Initial Test (Failed)
Iteration 1 - Add Counter
Iteration 2 - Add Foundational Principle
Testing Checklist (TDD for Skills)
Common Mistakes (Same as TDD)
Quick Reference (TDD Cycle)
The Bottom Line

Read the full SKILL.md on GitHub

Files

SKILL.md and 1 other file in plugins/ed3d-extending-claude/skills/testing-skills-with-subagents of ed3dai/ed3d-plugins.

SKILL.md
examples/CLAUDE_MD_TESTING.md

Open the folder on GitHubat commit 0c90f4b

Used in 3 other repositories

We found 5 copies of this SKILL.md (exact, near-identical or edited) in other folders, from 3 other GitHub owners. This page covers the copy in ed3dai/ed3d-plugins, which our catalogue first saw on October 7, 2026.

Compare with similar skills

Testing Skills With Subagents 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 Skills With Subagents compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Testing Skills With Subagents this skilled3dai/ed3d-plugins	250	3 repos	~3.5k	Automated safety check: Pass	None	1 mo ago
Create SkillNeoLabHQ/context-engineering-kit	1.7k	—	~7.6k	Automated safety check: Pass	GPL-3.0	1 mo ago
Writing Skillssandgardenhq/sgai	137	—	~4.9k	Automated safety check: Pass	Custom licence	19 days ago
Verifier SetupAI-Builder-Club/skills	1.3k	—	~2.1k	Automated safety check: Pass	None	24 days ago
Nv Implementnovuhq/novu	40k	—	~1.7k	Automated safety check: Pass	Custom licence	today
Test PromptNeoLabHQ/context-engineering-kit	1.7k	—	~5k	Automated safety check: Pass	GPL-3.0	1 mo ago

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Questions about Testing Skills With Subagents

What does Testing Skills With Subagents do?

When should I use Testing Skills With Subagents?

Testing Skills With Subagents fits situations like: before deployment; writing to address failures; iterating to close loopholes.

How do I install Testing Skills With Subagents in Claude Code?

Run `npx skills add ed3dai/ed3d-plugins --skill testing-skills-with-subagents -a claude-code`. Or copy the skill folder (plugins/ed3d-extending-claude/skills/testing-skills-with-subagents in ed3dai/ed3d-plugins) into .claude/skills/testing-skills-with-subagents in your project. Claude Code loads it when a task matches its description.

How do I install Testing Skills With Subagents in Codex?

Run `npx skills add ed3dai/ed3d-plugins --skill testing-skills-with-subagents -a codex`. Or copy the skill folder (plugins/ed3d-extending-claude/skills/testing-skills-with-subagents in ed3dai/ed3d-plugins) into .agents/skills/testing-skills-with-subagents in your project. Codex loads it when a task matches its description.

Can I use Testing Skills With Subagents 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 ed3dai/ed3d-plugins --skill testing-skills-with-subagents -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-skills-with-subagents, .gemini/skills/testing-skills-with-subagents, .github/skills/testing-skills-with-subagents and .opencode/skills/testing-skills-with-subagents in your project.

What does Testing Skills With Subagents need to run?

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

Does Testing Skills With Subagents 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 Skills With Subagents 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 Skills With Subagents use?

No licence was found for Testing Skills With Subagents or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.

How many tokens does Testing Skills With Subagents use?

About 3.5k tokens (SKILL.md is roughly 14k 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 With Subagents?

Skills that share tags, products or a category with Testing Skills With Subagents: Create Skill (NeoLabHQ/context-engineering-kit, 1.7k stars), Writing Skills (sandgardenhq/sgai, 137 stars), Verifier Setup (AI-Builder-Club/skills, 1.3k stars) and Nv Implement (novuhq/novu, 40k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Testing Skills With Subagents?

ed3dai (a GitHub organization) maintains it in ed3dai/ed3d-plugins, which has 250 GitHub stars. The repository holds 34 skills in this directory. The repository was last updated on September 6, 2026.

Source: ed3dai/ed3d-plugins on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.

Testing Skills With Subagents

Install Testing Skills With Subagents

Facts

At a glance

What it does

When your agent uses it

Example prompts

Workflow steps

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

Files

Used in 3 other repositories

Compare with similar skills

Similar skills

Create Skill

Writing Skills

Verifier Setup

Nv Implement

Test Prompt

Tapd Story Implement

More from ed3dai/ed3d-plugins

Systematic Debugging

Brainstorming

Writing Good Tests

Writing Skills

Coding Effectively

Creating An Agent

Questions about Testing Skills With Subagents

Install Testing Skills With Subagents

Facts

At a glance

What it does

When your agent uses it

Example prompts

Workflow steps

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

Files

Used in 3 other repositories

Compare with similar skills

Similar skills

More from ed3dai/ed3d-plugins

Related

Questions about Testing Skills With Subagents