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 arifaidev/carfeecalc-mcp --skill state-fee-researchgit clone --depth 1 https://github.com/arifaidev/carfeecalc-mcpWrote 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/arifaidev/carfeecalc-mcp/state-fee-research)<a href="https://agentmods.dev/skills/arifaidev/carfeecalc-mcp/state-fee-research"><img src="https://agentmods.dev/badge/skills/arifaidev/carfeecalc-mcp/state-fee-research/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/arifaidev/carfeecalc-mcp/state-fee-research"><img src="https://agentmods.dev/badge/skills/arifaidev/carfeecalc-mcp/state-fee-research.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 | $0.00000 | $0.00120 |
| Opus 5 | $0.00000 | $0.00060 |
| Sonnet 5 | $0.00000 | $0.00024 |
| Haiku 4.5 | $0.00000 | $0.00012 |
Grade A, and why
state-fee-research 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 10d 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
State Fee Research
Research vehicle fees for CarFeeCalc using authoritative sources.
Source priority
- State DMV/BMV/DOT/revenue agency
- County or municipal government
- Official tax authority
- Only then use reputable secondary sources for context
Workflow
- Identify jurisdiction and transaction.
- Find the official fee schedule or calculator.
- Capture amount, formula, eligibility, exceptions, effective date, and source.
- Check whether local taxes vary by ZIP/county.
- Flag stale or conflicting information.
- Never convert an uncertain value into an official-looking number.
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.
- 10d ago First seen · 20 lines · 0 tokens per session scan A da65aefbff46
state-fee-research is a skill published in the GitHub repository arifaidev/carfeecalc-mcp (0 stars, last pushed 13d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 120 tokens. 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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