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-mcp-server --skill ownershipgit clone --depth 1 https://github.com/carsxe/carsxe-mcp-serverWrote 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-mcp-server/ownership)<a href="https://agentmods.dev/skills/carsxe/carsxe-mcp-server/ownership"><img src="https://agentmods.dev/badge/skills/carsxe/carsxe-mcp-server/ownership/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-mcp-server/ownership"><img src="https://agentmods.dev/badge/skills/carsxe/carsxe-mcp-server/ownership.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 | $0.00052 | $0.00342 |
| Opus 5 | $0.00026 | $0.00171 |
| Sonnet 5 | $0.00010 | $0.00068 |
| Haiku 4.5 | $0.00005 | $0.00034 |
Grade A, and why
ownership 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 2d 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
Ownership (Enterprise)
Use the CarsXE MCP ownership tools. Auth is client-managed (API key or OAuth); do not embed secrets in plugin config. These endpoints require an Enterprise ownership entitlement.
Tools
get_ownership_by_vin— requiredvin; optionalincludeget_ownership_by_person— requiredfirstName,lastName,address,zip; optionalincludeget_ownership_by_address— requiredaddress,zip; optionalinclude,variantget_ownership_by_zip— requiredzip; optionalgender,minAge,maxAge,income,page,limit,include,variant
include is a comma-separated subset of demographics,emails,phones,vehicle_history.
When to use
- Registered owner(s) for a VIN
- Contact details for a known name + address
- Residents at a street address
- Filtered people in a ZIP code
Notes
- No match returns
no_dataand is not billed. - Matches are billed per record (
owners/matches/records). ZIP pages can consume a lot of quota. addressis street only (no city/state).- Do not add phone lookup unless the user explicitly asks and a phone tool exists.
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.
- 2d ago First seen · 32 lines · 52 tokens per session scan A 98dda75e6ac4
ownership is a skill published in the GitHub repository carsxe/carsxe-mcp-server (0 stars, last pushed 2d ago), licensed MIT. It adds 52 tokens to every session and 342 once invoked, about $0.0003 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 2026-09-11.
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