Provisional definition
The compression of consideration sets when agents pre-filter options before humans see them.
An agent can evaluate a wider field of options than it presents to a person. Agentic Narrowing names the proposed compression between those stages. The hypothesis concerns the options a person encounters and considers, so a convincing test must show what entered the process and what was removed.
How it could happen
An agent's task, available evidence, permissions, integrations, inventory information, and transaction capabilities can affect which alternatives survive its filtering. Those constraints should be observed separately. A brand that the system can describe is not automatically one the agent can buy from on a particular user's behalf.
The effect can be useful. Filtering can save effort and improve relevance. The strategic concern is whether suitable alternatives disappear before the person has an opportunity to evaluate them, and whether the basis for that exclusion can be inspected.
What the evidence does not establish
The controlled API access experiments requested three recommendations per response. Changing the brands within that fixed-size answer demonstrates substitution, not a smaller choice set. Adding shopper constraints can also improve relevance without demonstrating execution-based elimination.
The concept remains an emerging hypothesis. A test needs a defined comparison set and observations of the options available, evaluated, presented, and, when claimed, considered by the human. A person might verify only the suggested options or broaden the search. Those behaviors require separate evidence.
Relationship to DTBE
Statistical Availability concerns how a brand enters and is framed in AI-mediated interpretation. Agentic Availability concerns understanding and action under particular access and permission conditions. Agentic Narrowing asks whether filtering compresses the consideration set along that path. These outcomes should not be collapsed into one metric.
