AB 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.
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…
As a process B 70/100 · Nearly there — weak spots: when it triggers, failures and branches, progress reporting
The same skill appears in 1 more place: pm-claude-skills
How to improve
- Your own cases (evals/evals.json, 4–6 real requests with expected answers): the full check would then run those instead of a model-drafted suite.
- A spec.yaml with trigger phrases and assertions — a behaviour contract for CI; `skilltest init` writes a template.
Guard findings · 0
✓ No critical or high findings
Files scanned: 1. Evidence is masked. Grey chips explain why severity was lowered.
Against the Agent Skills spec
✓ No remarks against the Agent Skills spec
Process rating: all ten parameters 70/100
- 0Failures and branches. Linear process with no failure handling
- 0Progress reporting. Says nothing while it works
- 20When it triggers. No condition that starts the skill
- 60Result and completion. Output format stated, no completion criterion
- 70Inputs and preconditions. Inputs and preconditions are listed
- 100Tools and files. No external tools needed
- 100Steps. 24 steps
- 100Consistency. Name and required fields are in place
- 100Execution cost. Instruction body is 1567 tokens
- 100Running it twice. No mutating operations
Everything here is measured from the skill text rather than judged by a model, so the numbers are checkable. A parameter weighs more when it is a more common reason for the process to stall.
Quality signals
- +5Description has no quoted example phrases that should trigger the skill
- +4Description does not say when NOT to use the skill (false activations)
- +1No license
- +2Single-language instructions
- +3Description length 559: enough signal without eating the budget
- +4Structure: 8 headings
- +3Step-by-step instructions: 24 items
- +3Output format is stated explicitly
- +4Has examples (1 code blocks)
Quality base 70; lint remarks subtract, signals add up to 100. Result: 87.