Individual skill

used-car-decoder

Decode a used-car listing before you drive an hour to see it — what the seller's phrasing is hiding, the history-check items that matter, a test-drive and inspection checklist ordered by cost-of-miss, the questions that make evasive sellers visible, and the walk-away signs ranked 🔴🟡🟢. Use when someone says 'is this car listing legit', 'what should I check on a used car', 'decode this ad', or is about to buy their first car. Produces a listing decode, the viewing checklist, and the negotiation frame. Not a mechanic — and it says which checks need one.

skills/used-car-decoder/SKILL.md

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Nov 10, 2026
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MIT

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# Used Car Decoder Skill

A used-car listing is a document written by someone who knows the car's
problems, for someone who doesn't. The dialect is learnable: "selling for a
friend" (distance from liability), "drives well for its age" (adjusted
expectations), "minor cosmetic damage" (photographed from the good side),
"no test drives without deposit" (walk away now). This skill decodes the
ad the way [[lease-decoder]] reads a lease — severity-ranked, money math
attached — then arms the viewing: the checks a non-mechanic can actually
do, the questions that surface evasion, and the honest boundary: which
findings mean *pay a professional for an inspection* and which mean leave.

## What This Skill Produces
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