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/recusive/skills/test-engineernpx skills add Recusive/Skills --skill test-engineergit clone --depth 1 https://github.com/Recusive/SkillsWhat 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 | $0.00024 | $0.02097 |
| Opus 5 | $0.00012 | $0.01048 |
| Sonnet 5 | $0.00005 | $0.00419 |
| Haiku 4.5 | $0.00002 | $0.00210 |
Grade A, and why
test-engineer 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 2d 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.
How it starts
The opening of the file, as written. The whole thing — 295 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Test Engineer Skill
Write tests that fail when implementation breaks. No placeholders, no expect(true).toBe(true).
Process
Step 1: Read the File
Use Read tool to read the entire file. Identify:
- Type: React component, Zustand store, Zod schema, Rust module, Tauri command
- Public API: Exported functions, actions, props, methods
- Dependencies: Imports, external calls (Tauri invoke, APIs)
- Middleware: persist, immer, devtools (for Zustand stores)
- Side effects: API calls, state mutations, filesystem operations
Step 2: Output Analysis (MANDATORY)
Before writing ANY test code, output:
## Analysis: [filename]
**Type:** [React Component | Zustand Store | Zod Schema | Rust Module | Tauri Command]
**Purpose:** [1-2 sentences]
**Middleware:** [persist | immer | none] (if Zustand)
**Public API:**
- `functionName`: [what it does]
**Test Scenarios:**
1. [Happy path]
2. [Edge case]
3. [Error case]
**Skip Testing:**
- [Any pass-through functions or trivial code]
Step 3: Write Tests
See references/templates.md for framework-specific templates.
Framework Selection
| File Type | Framework | Mock Strategy |
|---|---|---|
Zustand Store (/stores/*.ts) |
Vitest | Mock @tauri-apps/api/core if store calls invoke |
| Zustand + persist | Vitest | Test partialize and merge callbacks |
React Component (*.tsx) |
Vitest + RTL | Custom render with providers |
Zod Schema (/schemas/*.ts) |
Vitest | None needed |
Rust Module (*.rs) |
cargo test |
tempfile for filesystem |
Tauri Command (/commands/*.rs) |
#[tokio::test] |
tempfile, real backend |
What ships with it
3 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 2d ago First seen · 295 lines · 24 tokens per session scan A 191b91075793
test-engineer is a skill published in the GitHub repository Recusive/Skills (2 stars, last pushed 4mo ago), licensed MIT. It adds 24 tokens to every session and 2,097 once invoked, about $0.0001 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 2026-08-31.
Other skills, from other repositories
chinese-documentation
中文文档排版参考——中英文空格、全半角标点、术语保留、链接格式、中文文案排版指北约定。仅在用户显式 /chinese-documentation 时调用，不要根据上下文自动触发。.
chinese-git-workflow
国内 Git 平台配置参考——Gitee、Coding.net、极狐 GitLab、CNB 的 SSH/HTTPS/凭据/CI 接入差异与镜像同步配置。仅在用户显式 /chinese-git-workflow 时调用，不要根据上下文自动触发。.
memorix-sessions
Use when resuming work, preparing handoff context, binding an HTTP control-plane project, or deciding whether sessionstart is useful.
memorix-troubleshooting
Use when Memorix MCP, setup, project binding, HTTP control plane, hooks, skills, or agent integration is missing, stale, or failing.
subagent-driven-development
当在当前会话中执行包含独立任务的实现计划时使用.
adr
Create and manage Architecture Decision Records. Documents significant technical decisions with context, alternatives, and consequences. Also supports evaluate (assess proposals) and design (system design) modes.