API referencev1
Record exposure
POST /exposure, which is what makes ranking quality measurable.
Ranking cannot be graded without knowing what was actually shown. A click rate over results nobody saw is not a measurement.
POST /exposure
pulse.exposure(decisionId, items); // buffered
await pulse.flushExposures(); // send nowexposure buffers, because a product grid renders many items at once and one request per card
would be absurd. flushExposures sends what is pending, and the SDK also flushes on page hide.
Send what rendered, not what you requested
If you asked for 24 and showed 12 above the fold, the honest exposure is what the shopper could actually see. Over-reporting exposure makes your own ranking look worse than it is.