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-yamlgit 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-yaml)<a href="https://agentmods.dev/skills/dhaupin/vant/vant-skill-yaml"><img src="https://agentmods.dev/badge/skills/dhaupin/vant/vant-skill-yaml/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-yaml"><img src="https://agentmods.dev/badge/skills/dhaupin/vant/vant-skill-yaml.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 | $0.00005 | $0.00247 |
| Opus 5.5 | $0.00002 | $0.00099 |
| Sonnet 5.5 | $0.00001 | $0.00049 |
| Haiku 4.5 | $0.00001 | $0.00025 |
Grade A, and why
yaml 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 1mo 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
YAML
Data serialization.
When To Use
- Config files
- Docker Compose
- GitHub Actions
What To Do
1. Syntax
key: value
number: 42
boolean: true
list:
- item1
- item2
object:
nested: value
2. Anchors
defaults: &defaults
adapter: postgres
development:
<<: *defaults
database: dev
3. Common Files
| File | Use |
|---|---|
| docker-compose.yml | Docker |
| .github/workflows/*.yml | CI/CD |
| .gitlab-ci.yml | GitLab CI |
4. Tools
# Validate
yamllint file.yml
python -c "import yaml; yaml.safe_load(open('f.yml'))"
Role: YAML Writer
Input: Data
Output: Config
Config files.
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.
- 1mo ago First seen · 72 lines · 5 tokens per session scan A a07653f6bdc9
yaml is a skill published in the GitHub repository dhaupin/vant (12 stars, last pushed yesterday), licensed MIT. It adds 5 tokens to every session and 247 once invoked, about $0.0000 per session on Opus 5.5. 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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