pi-packages: Skill for Claude Code

.pi/skills/testing/SKILL.md

testing is a skill for Claude Code, Codex from gotgenes/pi-packages. It costs 43 tokens per session (5,443 once invoked), scanned A, original, no licence file.

Testing guidance for Vitest, a JavaScript and TypeScript test framework, including mock patterns and test-planning rules. TDD means writing tests as part of the development process, often before the code they check.

In plain words
What is it for?
Use it to plan tests, create Vitest mocks with functions such as vi.mock and vi.fn, and debug test behavior.
Why use it?
It reduces uncertainty when writing or debugging tests and helps keep test doubles reset between cases.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing.

This is gotgenes/pi-packages's own configuration. It tells Claude Code and Codex how to work on pi-packages 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 pi-packages configures →

Reuse

Borrowing it

Nothing to install: this file belongs to gotgenes/pi-packages. 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/gotgenes/pi-packages/main/.pi/skills/testing/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/gotgenes/pi-packages

Made for: Claude Code, Codex.

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 testing

README.md
[![agentmods](https://agentmods.dev/badge/skills/gotgenes/pi-packages/testing/github.svg)](https://agentmods.dev/skills/gotgenes/pi-packages/testing)
Your own site
<a href="https://agentmods.dev/skills/gotgenes/pi-packages/testing"><img src="https://agentmods.dev/badge/skills/gotgenes/pi-packages/testing/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 testing

Your own site · 80×15
<a href="https://agentmods.dev/skills/gotgenes/pi-packages/testing"><img src="https://agentmods.dev/badge/skills/gotgenes/pi-packages/testing.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 43 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 5,443 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 $0.00043 $0.05443
Opus 5.5 $0.00017 $0.02177
Sonnet 5.5 $0.00009 $0.01089
Haiku 4.5 $0.00004 $0.00544

Measured 13d ago against content hash 2876dfeb1433, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

testing 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 13d 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.

.pi/skills/testing/SKILL.md · 206 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. 13d ago Changed 2876dfeb1433
  2. 23d ago Changed · +1 lines b3872a408fb5
  3. 1mo ago Changed · +4 lines ac4e11cc0625
  4. 1mo ago Changed · +2 lines 25966eaf15fe
  5. 1mo ago Changed · +1 lines d505f368e1af
  6. 1mo ago Changed · +2 lines c0aadf9a8302
  7. 1mo ago Changed · +7 tokens per session 8bc83fb66a24
  8. 1mo ago Changed · -2 lines 0f7b9a727038
  9. 1mo ago Changed · +2 lines 0a917935143e
  10. 1mo ago First seen · 196 lines · 36 tokens per session scan A 7cbdd58c4be8

Subscribe to this mod's changes

testing is a skill published in the GitHub repository gotgenes/pi-packages (274 stars, last pushed 2d ago), with no licence file. It adds 43 tokens to every session and 5,443 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 2026-08-30.