Borrowing it
Nothing to install: this file belongs to carsxe/carsxe-claude-plugin. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/carsxe/carsxe-claude-plugin/main/CLAUDE.mdgit 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/instructions/carsxe/carsxe-claude-plugin/claude-md)<a href="https://agentmods.dev/instructions/carsxe/carsxe-claude-plugin/claude-md"><img src="https://agentmods.dev/badge/instructions/carsxe/carsxe-claude-plugin/claude-md/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/instructions/carsxe/carsxe-claude-plugin/claude-md"><img src="https://agentmods.dev/badge/instructions/carsxe/carsxe-claude-plugin/claude-md.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 | $0.00654 | $0.00654 |
| Opus 5 | $0.00327 | $0.00327 |
| Sonnet 5 | $0.00131 | $0.00131 |
| Haiku 4.5 | $0.00065 | $0.00065 |
Grade A, and why
carsxe-claude-plugin CLAUDE.md scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured today.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 70 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CarsXE Plugin for Claude Code
What This Is
Markdown-based Claude Code plugin. No build step. Files are command/skill definitions consumed directly by the Claude Code harness.
Structure
.claude-plugin/marketplace.json # Marketplace metadata
carsxe/
.claude-plugin/plugin.json # Plugin manifest
commands/ # 17 explicit slash commands (*.md)
skills/ # 15 auto-invoked skills (*/SKILL.md)
Adding a Command
- Create
carsxe/commands/<name>.md - Follow existing command pattern: API URL, method, params, response format, error handling
- Always include
key=$CARSXE_API_KEY&source=claude_pluginin query params
Adding a Skill
- Create
carsxe/skills/<name>/SKILL.md - Add YAML frontmatter with
nameanddescription(description drives auto-invocation trigger) - Follow existing skill pattern
API
Base URL: https://api.carsxe.com
Auth: CARSXE_API_KEY env var — set via /carsxe:auth <KEY>, session-scoped, not persisted
Required params on every request: key=<CARSXE_API_KEY>&source=claude_plugin
| Command | Endpoint | Method |
|---|---|---|
| auth | /v1/auth/validate |
GET |
| specs | /specs |
GET |
| plate | /v2/platedecoder |
GET |
| value | /v2/marketvalue |
GET |
| history | /history |
GET |
| images | /images |
GET |
| recalls | /v1/recalls |
GET |
| recalls-ymm | /v1/recalls-ymm |
GET |
| recalls-batch | /v1/recalls-batch/submit |
POST (JSON body) |
| recalls-batch | /v1/recalls-batch/status|results|download |
GET |
| intvin | /v1/international-vin-decoder |
GET |
| ocr | /v1/vinocr |
POST (JSON body) |
| lien | /v1/lien-theft |
GET |
| plateocr | /platerecognition |
POST (JSON body) |
| ymm | /v1/ymm |
GET |
| ymm-options | /v1/ymm-options |
GET |
| ownership | /v1/ownership/vin|person|address|zip |
GET |
| obd | /obdcodesdecoder |
GET |
Versioning
Version lives in two places — keep in sync:
carsxe/.claude-plugin/plugin.json→version.claude-plugin/marketplace.json→version
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.
- today Changed · +5 lines · +101 tokens per session c78246230c19
- 11d ago First seen · 65 lines · 553 tokens per session scan A 009293531b81
carsxe-claude-plugin CLAUDE.md is an instructions file published in the GitHub repository carsxe/carsxe-claude-plugin (2 stars, last pushed yesterday), licensed MIT. It adds 654 tokens to every session, about $0.0033 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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