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 dhaupin/vant --skill vant-skill-test-regressiongit clone --depth 1 https://github.com/dhaupin/vantWrote 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/dhaupin/vant/vant-skill-test-regression)<a href="https://agentmods.dev/skills/dhaupin/vant/vant-skill-test-regression"><img src="https://agentmods.dev/badge/skills/dhaupin/vant/vant-skill-test-regression/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/dhaupin/vant/vant-skill-test-regression"><img src="https://agentmods.dev/badge/skills/dhaupin/vant/vant-skill-test-regression.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 | $0.00030 | $0.00244 |
| Opus 5 | $0.00015 | $0.00122 |
| Sonnet 5 | $0.00006 | $0.00049 |
| Haiku 4.5 | $0.00003 | $0.00024 |
Grade A, and why
test-regression 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 5d 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 Regression
Verify no new bugs.
When To Use
- Before release
- After feature freeze
- Per release
What To Test
1. Full Suite
npm test -- --coverage
2. Compare Baseline
npm test -- --compare baseline.json
3. Critical Paths
- Login
- Payment
- Search
- Save/Edit
Output
## Regression Tests
| Category | Before | After | Delta |
|----------|--------|-------|-------|
| Unit | 100 | 100 | 0 |
| Integration | 50 | 49 | -1 |
| E2E | 20 | 20 | 0 |
### New Failures
- [list]
Role: Regression Tester
Input: Changes
Output: Pass/Fail
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.
- 5d ago First seen · 60 lines · 30 tokens per session scan A 621be52bae6d
test-regression is a skill published in the GitHub repository dhaupin/vant (9 stars, last pushed 10d ago), licensed MIT. It adds 30 tokens to every session and 244 once invoked, about $0.0002 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 2026-09-03.
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