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Reading prices: ask, bid & NBBO

How to interpret the price fields the API returns.

Ask vs bid

ask is the lowest current sell offer (what you'd pay to buy now); bid is the highest standing buy order (what you'd receive selling now). The spread is ask − bid.

NBBO

National Best Bid & Offer is the best ask and best bid taken across every indexed marketplace at once, not within a single market. bestAsk and bestBid each name their source market. spreadBps expresses the spread in basis points (100 bps = 1%).

Cents, not dollars

Every price field is an integer number of USD cents, so 1550 means $15.50. Divide by 100 only at display time to avoid floating-point drift.

locked & crossed

locked is true when the best bid equals the best ask (zero spread). crossed is true when the best bid exceeds the best ask, a fleeting cross-market inversion that usually means one leg went stale a beat before the other refreshed. Both are flags so you can filter or discount those reads.

Usage & licensing

Access to the API and its data is governed by our Terms of Service. You may not resell or redistribute the data, use it to build a competing service, or exceed your plan’s rate limits, and you must attribute SkinPricer as the source wherever the Terms permit you to display it. Abuse may be throttled or suspended.