AI Shelf Index: magnesium
Measured 1 September 2026.20 questions, five assistants, five repeats:500 answers. Includes brand shares, per-assistant results, cited domains and the actual question list.
Read the studyResearch & field notes
ShelfSignal research and public benchmarks
Dated AI visibility studies, simulated shopping-audit formats and storefront-readiness pilots, with source pages and clear measurement boundaries.
Vladimir Fedorov · Published 26 October 2026
Published studies
Agent-Ready Index pilot
Observed 23 September 2026. An indicative inspection of four storefronts against six layers. No checkout or transaction was performed.
Read the pilotOrder Shelf report format
Published 1 October 2026. Explains the 60-decision purchase-brief design and its simulated, pre-payment scope.
Read the format and sampleHow to use this research
Use each study’s own date, question set and denominator. A magnesium visibility study should not be presented as a benchmark for every industry or as evidence of supplement quality. New category waves will be listed only when a new measurement exists; an updated website date is not a new data collection date.
Published author: Vladimir Fedorov, ShelfSignal co-founder and CTO. The research is produced by ShelfSignal; named product brands are not implied customers or partners. Questions about reuse of source data should be discussed with the team; no open-data licence is asserted here.
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