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.
git clone --depth 1 https://github.com/carsxe/carsxe-claude-pluginWrote 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/commands/carsxe/carsxe-claude-plugin/intvin)<a href="https://agentmods.dev/commands/carsxe/carsxe-claude-plugin/intvin"><img src="https://agentmods.dev/badge/commands/carsxe/carsxe-claude-plugin/intvin/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/commands/carsxe/carsxe-claude-plugin/intvin"><img src="https://agentmods.dev/badge/commands/carsxe/carsxe-claude-plugin/intvin.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 | $0.00221 |
| Opus 5 | $0.00000 | $0.00111 |
| Sonnet 5 | $0.00000 | $0.00044 |
| Haiku 4.5 | $0.00000 | $0.00022 |
Grade A, and why
intvin 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 11d 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
CarsXE — International VIN Decoder
Decode an international VIN provided in $ARGUMENTS using the CarsXE International VIN Decoder API.
Steps
- Parse $ARGUMENTS to extract the VIN (required).
- If no VIN is provided, ask: "Please provide an international VIN to decode (e.g.,
/carsxe:intvin WF0MXXGBWM8R43240)." - Make an HTTP GET request:
ReplaceGET https://api.carsxe.com/v1/international-vin-decoder?key=<CARSXE_API_KEY>&vin=<VIN>&source=claude_plugin<CARSXE_API_KEY>with the value of the environment variableCARSXE_API_KEY. - Present the decoded information:
- Country of manufacture
- Make, Model, Year
- Engine & transmission details
- Body style
- Any other returned attributes
- Note: this endpoint is optimized for non-US VINs (European, Asian manufacturers, etc.).
- Handle errors gracefully.
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.
- 11d ago First seen · 22 lines · 0 tokens per session scan A 73d63c456dd6
intvin is a command published in the GitHub repository carsxe/carsxe-claude-plugin (2 stars, last pushed yesterday), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 221 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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