Learn / Strategy
Should you block or allow AI shopping agents?
Blocking AI shopping agents is a legitimate commercial decision and so is allowing them. The indefensible position is the common one: a rule written for training crawlers that also removes you from a sales channel, discovered years later. The arguments on both sides are real, and the thing that matters is that the answer is chosen rather than inherited from a default.
Both answers are legitimate. What is not legitimate is the position most stores are actually in: a rule written for one purpose quietly deciding a different question, with nobody aware it was decided.
The case for blocking
An agent mediated sale is a thinner relationship. Less brand contact, potentially less customer data, less opportunity to influence the next purchase, and a comparison you enter on price and terms rather than on everything you have built.
For a brand whose value is in the relationship rather than the transaction, that is a coherent strategic position. It is not a fringe view and it deserves to be argued rather than assumed away.
The case for allowing
The counter is that blocking does not recover the shopper. Somebody who asked an assistant to find and buy something is not going to be returned to your storefront by your absence, they are going to be given a competitor.
So the choice is usually between a mediated sale and no sale, rather than between a mediated sale and a direct one.
The position to avoid
Neither. A robots.txt rule written to keep content out of training data, catching shopping agents because the tokens appeared in the same guide. A CDN category left at a vendor default. Both decide this without anyone choosing.
The cost is asymmetric too: the decision applies to every new assistant that appears, and nothing tells you when one does. See how to configure robots.txt for AI shopping agents.
If you allow, allow properly
Being permitted and being competitive are different. A store that allows agents and publishes no shipping cost is present and losing, which is arguably worse than a clean decision to stay out.
If you block, block visibly
Block by category in a place somebody will find, with the reasoning recorded, and make sure your CDN and your robots rules agree. A store whose robots file welcomes agents while its edge turns them away has the costs of both positions and the benefits of neither.
Questions
What is the strongest argument for blocking?
That an agent mediated sale weakens your relationship with the customer: less brand contact, less data, less chance to influence the next purchase. That is a genuine strategic position, and it should be taken deliberately rather than accidentally.
What is the strongest argument for allowing?
That the shopper has already decided to buy through an assistant, so blocking does not return them to your site, it returns them to a competitor. You are choosing between a mediated sale and no sale.
Can I change my mind later?
Yes, and that is a good reason to make the decision explicit in a place you can find again. Write it down with the reasoning so revisiting it is a review rather than an archaeology exercise.