Borrowing it
Nothing to install: this file belongs to limtaewon/dooray-claude-gui-assistance. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/limtaewon/dooray-claude-gui-assistance/main/.claude/skills/vitest-patterns/SKILL.mdgit clone --depth 1 https://github.com/limtaewon/dooray-claude-gui-assistanceWrote 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.
[](https://agentmods.dev/skills/limtaewon/dooray-claude-gui-assistance/vitest-patterns)<a href="https://agentmods.dev/skills/limtaewon/dooray-claude-gui-assistance/vitest-patterns"><img src="https://agentmods.dev/badge/skills/limtaewon/dooray-claude-gui-assistance/vitest-patterns/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.
<a href="https://agentmods.dev/skills/limtaewon/dooray-claude-gui-assistance/vitest-patterns"><img src="https://agentmods.dev/badge/skills/limtaewon/dooray-claude-gui-assistance/vitest-patterns.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00047 | $0.01366 |
| Opus 5.5 | $0.00019 | $0.00546 |
| Sonnet 5.5 | $0.00009 | $0.00273 |
| Haiku 4.5 | $0.00005 | $0.00137 |
Grade A, and why
vitest-patterns scanned grade A with 1 finding 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.
Runs shell commandslowCapability
Expected in a hook, worth knowing in a rule or an instructions file.
## child_process spawn / execFile mock 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.
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.
- 2mo ago First seen · 175 lines · 47 tokens per session scan A 04f2e81a9212
vitest-patterns is a skill published in the GitHub repository limtaewon/dooray-claude-gui-assistance (10 stars, last pushed 16d ago), with no licence file. It adds 47 tokens to every session and 1,366 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 1 finding (runs shell commands). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
Other skills, from other repositories
test-master
Generates test files, creates mocking strategies, analyzes code coverage, designs test architectures, and produces test plans and defect reports across functional, performance, and security testing disciplines. Use when writing unit tests, integration tests, or E2E tests; creating test strategies or automation…
migrate-xunit-to-xunit-v3
Migrate .NET test projects from xUnit.net v2 to xunit.v3 and fix v3 breaks. Use for package/CPM conversion, OutputType=Exe, preserving the VSTest or MTP runner (including projects currently using YTest.MTP.XUnit2), incompatible TFMs, async void tests, string-to-Type attributes, custom Fact/Theory/BeforeAfterTest…
go-testing
Trigger: Go tests, go test coverage, Bubbletea teatest, golden files. Apply focused Go testing patterns.
principle-test-behavior-not-implementation
Apply when you write, change, or keep a test. Assert what the code's users can observe, so that the test fails when that behavior breaks and keeps passing when only the internals change.
dart-test
DART Test: unit tests, integration tests, CI validation, and debugging.
restore-internals-seams-in-finally-blocks-after-each-test
When delegating a task affected by this skill, include.