# Agent-as-Buyer

> The pattern where an AI agent, not a human, searches, evaluates and completes a purchase on the user's behalf.

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- **term:** Agent-as-Buyer
- **category:** commerce
- **short_def:** The pattern where an AI agent, not a human, searches, evaluates and completes a purchase on the user's behalf.
- **long_def:** Agent-as-buyer is the demand side of agentic commerce: the agent compares options, makes the decision and transacts, with the human authorizing scope in advance. It changes optimization targets — product data must be machine-parseable, APIs and structured feeds matter more than visual merchandising, and checkout must accept protocols like ACP, AP2 and x402. McKinsey has projected agentic commerce could reach $1 trillion in US retail by 2030.
- **see_also:** agentic-commerce, acp, agentic-seo
- **etymology_origin:** — (verify-against-primary-at-build)
- **related_to:** agentic-commerce, acp, ap2, agentic-seo, agent-identity
- **contrast_with:** Unlike agentic commerce as a whole, which spans buying and selling, agent-as-buyer names specifically the demand-side actor — the purchasing agent whose needs reshape product data, feeds and checkout toward machine-readability.
- **example:** In an agent-as-buyer flow, a shopping agent compares products and completes checkout via a protocol like ACP; McKinsey has projected agentic commerce could reach $1 trillion in US retail by 2030.
- **source:** https://en.wikipedia.org/wiki/Agentic_commerce
- **status:** emerging
- **why_it_matters:** Agent-as-buyer is why a merchant must expose machine-readable product data and an agent-acceptable checkout; the buyer it must win over is increasingly software, not a human shopper.
- **sameAs:** https://en.wikipedia.org/wiki/Agentic_commerce
- **bridge_entity:** protocols/payments/acp
- **last_verified:** 2026-06-15
- **md_twin:** /glossary/agent-as-buyer.md