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 carsxe/carsxe-claude-plugin --skill plate-decodergit 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/skills/carsxe/carsxe-claude-plugin/plate-decoder)<a href="https://agentmods.dev/skills/carsxe/carsxe-claude-plugin/plate-decoder"><img src="https://agentmods.dev/badge/skills/carsxe/carsxe-claude-plugin/plate-decoder/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/carsxe/carsxe-claude-plugin/plate-decoder"><img src="https://agentmods.dev/badge/skills/carsxe/carsxe-claude-plugin/plate-decoder.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 | $0.00038 | $0.00327 |
| Opus 5 | $0.00019 | $0.00163 |
| Sonnet 5 | $0.00008 | $0.00065 |
| Haiku 4.5 | $0.00004 | $0.00033 |
Grade A, and why
plate-decoder 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
When the user provides a license plate number:
-
Extract the following from the user's message:
plate(required): the license plate number — if not provided, alert the user:"Please provide a license plate number."
country(required): ISO 3166-1 alpha-2 country code (e.g.,US,AU,GB) — if not provided, alert the user:"Please provide a country code (e.g., US, AU, GB)."
state(required): 2-letter state/province code (e.g.,CA,NY) — if not provided, alert the user:"Please provide a state code (e.g., CA, NY, TX)."
-
Do not call the API until all three fields are provided.
-
Call the CarsXE Plate Decoder API:
GET https://api.carsxe.com/v2/platedecoder?key={CARSXE_API_KEY}&plate={PLATE}&country={COUNTRY}&state={STATE}&source=claude_plugin -
Present the results: vehicle Make, Model, Year, VIN (if returned), and registration info.
-
If the API key is missing, tell the user to set the
CARSXE_API_KEYenvironment variable.
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 · 26 lines · 38 tokens per session scan A 13c217de6db4
plate-decoder is a skill published in the GitHub repository carsxe/carsxe-claude-plugin (2 stars, last pushed today), licensed MIT. It adds 38 tokens to every session and 327 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 2026-08-31.
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flow-next-tracker-sync
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writing-style
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