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setupClaudeCode: Skill for Claude Code

.claude/skills/tester/SKILL.md

tester is a skill for Claude Code from KJ-devs/setupClaudeCode. It costs 39 tokens per session (1,492 once invoked), scanned A, original, no licence file.

A testing tool that follows test-driven development, or TDD: write a failing test first, then add code until it passes. It uses Playwright for browser tests and Given-When-Then scenarios for backend behavior.

In plain words
What is it for?
It helps write frontend tests, backend behavior tests, and verify their results.
Why use it?
It gives development a repeatable order and checks that the written tests pass.

Skill for Claude Code

Written for Claude Code: user-invocable in frontmatter.

This is KJ-devs/setupClaudeCode's own configuration. It tells Claude Code how to work on setupClaudeCode itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything setupClaudeCode configures →

not rated 2repo 8mo ago A scan 39 tokens no licence
View source ↗ KJ-devs/setupClaudeCode
Reuse

Borrowing it

Nothing to install: this file belongs to KJ-devs/setupClaudeCode. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/KJ-devs/setupClaudeCode/main/.claude/skills/tester/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/KJ-devs/setupClaudeCode

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for tester

README.md
[![agentmods](https://agentmods.dev/badge/skills/kj-devs/setupclaudecode/tester/github.svg)](https://agentmods.dev/skills/kj-devs/setupclaudecode/tester)
Your own site
<a href="https://agentmods.dev/skills/kj-devs/setupclaudecode/tester"><img src="https://agentmods.dev/badge/skills/kj-devs/setupclaudecode/tester/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for tester

Your own site · 80×15
<a href="https://agentmods.dev/skills/kj-devs/setupclaudecode/tester"><img src="https://agentmods.dev/badge/skills/kj-devs/setupclaudecode/tester.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 39 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,492 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00039 $0.01492
Opus 5.5 $0.00016 $0.00597
Sonnet 5.5 $0.00008 $0.00298
Haiku 4.5 $0.00004 $0.00149

Measured 2mo ago against content hash 9c1d8b948122, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

tester scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.claude/skills/tester/SKILL.md · 193 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2mo ago First seen · 193 lines · 39 tokens per session scan A 9c1d8b948122

Subscribe to this mod's changes

tester is a skill published in the GitHub repository KJ-devs/setupClaudeCode (2 stars, last pushed 8mo ago), with no licence file. It adds 39 tokens to every session and 1,492 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

E2E testingTDDTesting
Related

tester compared with skills from other repositories

tester next to 6 skills from other repositories
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