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CONCEPT Cited by 3 sources

Agentic commerce

Definition

Agentic commerce is the class of buy transactions where an AI agent acts as the proxy for a human buyer — surfacing products, verifying inventory, completing checkout, and handling post-sale events on the buyer's behalf. The agent is not a customer-support channel overlaid on existing commerce; it is the new top-of-funnel surface displacing browser + app channels for a slice of buy decisions.

Per the 2026-03-12 Stripe retrospective, the sequence is: "Early retail happened in store. First-wave ecommerce happened on your site. Mobile maintains your brand's look and feel. Agentic commerce shifts buying intent onto AI surfaces."

Architectural distinctions from browser e-commerce

  1. No human on the frontend during the buy decision. The agent exchanges the final click for a programmatic API call; human-behavioural fraud signals vanish. See systems/stripe-radar's network-density substitute.
  2. Real-time inventory exchange in the checkout call. Availability is verified in the same ACP round-trip that shows the product to the buyer — 15-minute-stale feeds are a fatal mismatch with agent cadence.
  3. Agent-initiated payment needs a new primitive. SPTs replace direct credential exchange; credentials stay vaulted, agent holds only a scoped reference.
  4. Buyer identity materialises late. Most flows behave as guest checkouts; the buyer's identity surfaces only at buy moment. See concepts/agent-identity-resolution-gap.
  5. Catalog fragmentation is the dominant up-front cost. Each agent surface wants catalog data in a different format. See concepts/product-catalog-syndication.
  6. Post-sale events route through the agent. Cancellations, returns, refunds all require the agent to round-trip with the seller's legacy backend — an unsolved integration shape per the 2026-03-12 disclosure.

Two deployment shapes

  • First-party agents — brand-owned (NikeAI, Magic Apron from Home Depot, Ask Ralph from Ralph Lauren). Engagement / retention / LTV layer. Seller controls identity, brand, data.
  • Third-party agents — aggregator-owned (OpenAI's shopping surface, Google's agent surfaces, etc.). Acquisition / net-new- demand layer. Seller trades brand control for reach.

Stripe's framing: these "aren't an either/or decision so much as a measurement challenge" — they serve different customer- journey points and stack on the same commerce substrate.

Distinction from machine payments

Agentic commerce is human-buyer → agent → seller. "A checkout session with shipping, loyalty, and a human confirmation step." Governed by ACP / Google UCP.

Machine payments is agent → API (no human buyer). Programmatic per-request charges for tool calls, API data, task execution. Governed by HTTP 402 + x402 + stablecoin settlement.

Both are "agentic", but only the former involves a human buyer's money moving for a human-consumable good or service.

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