Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add skills/microsoft/vscode/unit-testsnpx skills add microsoft/vscode --skill unit-testsgit clone --depth 1 https://github.com/microsoft/vscodeWhat 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 | $0.00050 | $0.00898 |
| Opus 5 | $0.00025 | $0.00449 |
| Sonnet 5 | $0.00010 | $0.00180 |
| Haiku 4.5 | $0.00005 | $0.00090 |
Grade A, and why
unit-tests 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 yesterday.
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.
How it starts
The opening of the file, as written. The whole thing — 106 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Running Unit Tests
Preferred: Use the runTests tool
If the runTests tool is available, prefer it over running shell commands. It provides structured output with detailed pass/fail information and supports filtering by file and test name.
- Pass absolute paths to test files via the
filesparameter. - Pass test names via the
testNamesparameter to filter which tests run. - Set
mode="coverage"to collect coverage.
Example (conceptual): run tests in src/vs/editor/test/common/model.test.ts with test name filter "should split lines".
Fallback: Shell scripts
When the runTests tool is not available (e.g. in CLI environments), use the platform-appropriate script from the repo root:
- macOS / Linux:
./scripts/test.sh [options] - Windows:
.\scripts\test.bat [options]
These scripts download Electron if needed and launch the Mocha test runner.
Commonly used options
Bare file paths - Run tests from specific files
Pass source file paths directly as positional arguments. The test runner automatically treats bare .ts/.js positional arguments as --run values.
./scripts/test.sh src/vs/editor/test/common/model.test.ts
.\scripts\test.bat src\vs\editor\test\common\model.test.ts
Multiple files:
./scripts/test.sh src/vs/editor/test/common/model.test.ts src/vs/editor/test/common/range.test.ts
--run <file> - Run tests from a specific file (explicit form)
Accepts a source file path (starting with src/). The runner strips the src/ prefix and the .ts/.js extension automatically to resolve the compiled module.
./scripts/test.sh --run src/vs/editor/test/common/model.test.ts
Multiple files can be specified by repeating --run:
./scripts/test.sh --run src/vs/editor/test/common/model.test.ts --run src/vs/editor/test/common/range.test.ts
--grep <pattern> (aliases: -g, -f) - Filter tests by name
Runs only tests whose full title matches the pattern (passed to Mocha's --grep).
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.
- yesterday First seen · 106 lines · 50 tokens per session scan A ff37056fc57a
unit-tests is a skill published in the GitHub repository microsoft/vscode (190,061 stars, last pushed yesterday), licensed MIT. It adds 50 tokens to every session and 898 once invoked, about $0.0003 per session on Opus 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.
Other skills, from other repositories
docx
使用 OpenXML SDK (.NET) 进行专业的 DOCX 文档创建、编辑和格式化。 三种管道：(A) 从零创建新文档，(B) 在已有文档中填充/编辑内容， (C) 应用模板格式化并通过 XSD 验证门控检查。 当用户需要生成、修改或格式化 Word 文档时，必须使用此 skill—— 包括他们说"写一份报告"、"起草建议书"、"制作合同"、 "填写此表单"、"按此模板重新排版"，或任何最终输出为 .docx 文件的任务。 即使用户未明确提及 "docx"，如果任务暗示生成可打印/正式文档，也应使用此 skill。.
cyrene-plan-mode
当 Cyrene 处于 Plan Mode（计划模式），正在讨论、调查、细化或准备代码/文件改动的实施计划时使用。.
as-planning-and-task-breakdown
Breaks work into ordered tasks. Use when you have a spec or clear requirements and need to break work into implementable tasks. Use when a task feels too large to start, when you need to estimate scope, or when parallel work is possible.
as-spec-driven-development
Creates specs before coding. Use when starting a new project, feature, or significant change and no specification exists yet. Use when requirements are unclear, ambiguous, or only exist as a vague idea.
ecc-code-tour
Create CodeTour .tour files — persona-targeted, step-by-step walkthroughs with real file and line anchors. Use for onboarding tours, architecture walkthroughs, PR tours, RCA tours, and structured "explain how this works" requests.
ecc-codebase-onboarding
Analyze an unfamiliar codebase and generate a structured onboarding guide with architecture map, key entry points, conventions, and a starter CLAUDE.md. Use when joining a new project or setting up Claude Code for the first time in a repo.