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 jeffreytse/grimoire-core --skill run-pre-purchase-inspectiongit clone --depth 1 https://github.com/jeffreytse/grimoire-coreWrote 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/jeffreytse/grimoire-core/run-pre-purchase-inspection)<a href="https://agentmods.dev/skills/jeffreytse/grimoire-core/run-pre-purchase-inspection"><img src="https://agentmods.dev/badge/skills/jeffreytse/grimoire-core/run-pre-purchase-inspection/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/jeffreytse/grimoire-core/run-pre-purchase-inspection"><img src="https://agentmods.dev/badge/skills/jeffreytse/grimoire-core/run-pre-purchase-inspection.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 | $0.00029 | $0.01228 |
| Opus 5 | $0.00015 | $0.00614 |
| Sonnet 5 | $0.00006 | $0.00246 |
| Haiku 4.5 | $0.00003 | $0.00123 |
Grade A, and why
run-pre-purchase-inspection 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.
How it starts
The opening of the file, as written. The whole thing — 60 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Run Pre-Purchase Inspection
Conduct a systematic 360-degree inspection of a used vehicle — exterior, interior, mechanical, and digital history — before committing to purchase.
Why This Is Best Practice
Adopted by: NHTSA consumer protection guidelines, ASE-certified pre-purchase inspection services, Consumer Reports used-car buying methodology, CarFax-recommended buyer due diligence
Impact: 1 in 5 used vehicles has a significant hidden problem (Consumer Reports); pre-purchase inspections identify issues in 68% of inspected vehicles (ASE survey); average repair cost of undisclosed defects is $1,400–$4,200; professional PPI costs $100–$200 and prevents $500–$8,000 in post-purchase surprises
Why best: Used vehicle sellers have information asymmetry; structured inspection neutralizes that advantage and provides documented leverage for price negotiation
Sources: NHTSA "Vehicle Safety" consumer guide; ASE "Pre-Purchase Inspection Standards"; CarFax/AutoCheck "Buyer's Checklist" methodology; Consumer Reports "Used Car Buying Guide" (2023)
Steps
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Run the VIN history report first — Pull CarFax AND AutoCheck (they use different databases); check for: accident history, frame/flood/fire damage, odometer rollback flags, title brands (salvage, rebuilt, lemon-law buyback), number of previous owners, service history records, and open safety recalls.
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Check open recalls — Enter the VIN at nhtsa.gov/recalls; any open recall is the seller's responsibility to disclose; unfixed recalls are a safety risk and negotiation lever.
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Inspect the exterior in daylight — Walk the perimeter in direct sunlight at eye level; look for: panel gaps (inconsistent gaps indicate repaired collision damage), paint color mismatches, overspray on trim or rubber seals (sign of respray), ripples in panels, rust bubbles at lower edges, crack in windshield, haze or crazing on lights.
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Inspect under the hood — Engine cold (do not test after a warm-up that hides cold-start problems): check oil level and color (black = overdue, milky = coolant contamination, sign of head gasket failure), coolant level and color, power steering and brake fluid levels, belt condition (cracking, fraying), battery terminal corrosion, any fresh sealants or oil residue on engine surfaces.
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 · 60 lines · 29 tokens per session scan A 740b258caf09
run-pre-purchase-inspection is a skill published in the GitHub repository jeffreytse/grimoire-core (4 stars, last pushed 22d ago), licensed MIT. It adds 29 tokens to every session and 1,228 once invoked, about $0.0001 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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