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 skills add tmusser/ai-engineering-skills --skill test-minigit clone --depth 1 https://github.com/tmusser/ai-engineering-skillsWrote 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/tmusser/ai-engineering-skills/test-mini)<a href="https://agentmods.dev/skills/tmusser/ai-engineering-skills/test-mini"><img src="https://agentmods.dev/badge/skills/tmusser/ai-engineering-skills/test-mini.svg" alt="Measured on agentmods" 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 | $0.00014 | $0.00320 |
| Opus 5 | $0.00007 | $0.00160 |
| Sonnet 5 | $0.00003 | $0.00064 |
| Haiku 4.5 | $0.00001 | $0.00032 |
Grade A, and why
test-mini 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 8d 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.
What it actually says
Test Mini
Purpose
Protect against wrong behavior without heavy tests.
When to use
Use for ML model workflows, agents, dashboards, data transformations, metric calculations, scheduled jobs, and any behavior that can appear to run while being wrong.
Inputs
- Implemented slice
- Expected behavior
- Available fixtures or examples
- Build/test/run commands
Workflow
- Add one deterministic behavior test when possible.
- Add one fixture or golden example when useful.
- Add one smoke test or manual verification path.
- Run exact commands.
- Record command output and result.
- Keep tests focused on the changed behavior.
Test integrity
Prefer adding tests over changing existing tests.
If modifying existing tests:
- Record the changed test path.
- State why the old assertion was wrong or incomplete.
- Name the source of truth.
- Preserve the prior assertion or replace it intentionally.
- Mark verification as
REVIEW_REQUIREDunless the rationale is explicit.
Never weaken tests merely to match the implementation.
Outputs
- Focused test or fixture
- Smoke path
- Exact command results
- Remaining risk notes
Stop conditions
- The behavior is proven enough for the task risk.
- No deterministic check is possible without changing the design.
Anti-patterns
- Only checking that the code runs without checking correctness.
- Adding broad tests unrelated to the changed behavior.
- Hiding manual verification steps in chat.
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.
- 8d ago First seen · 63 lines · 14 tokens per session scan A 63c7fb66bd3d
test-mini is a skill published in the GitHub repository tmusser/ai-engineering-skills (4 stars, last pushed today), licensed MIT. It adds 14 tokens to every session and 320 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.
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