Three layers, three jobs
UCP is about agentic commerce interoperability across discovery, checkout, and post-purchase flows. AP2 focuses on agent payments and auditable purchase authority. ACP, co-developed by OpenAI and Stripe, supports agentic checkout flows such as Instant Checkout in ChatGPT.
The protocols overlap because commerce overlaps. Discovery, cart state, payment authorization, merchant fulfillment, refunds, and customer support all touch each other.
What buyers care about
Buyers care whether the agent bought the right product, stayed inside the mandate, used the correct account, and produced a receipt. Protocol names matter less than the audit trail.
For a business kit, the mandate should specify the product slug, maximum price, merchant, account email, refund window, and whether the agent may complete payment or only prepare checkout.
What merchants should prepare
Keep the public product page, structured data, checkout URL, receipt, download, and support policy consistent. Agentic commerce fails when the agent sees one promise on the page and a different state at checkout.
Do not assume one protocol wins everything. Build clean commerce truth first, then adapt to the surfaces that send real buyers.
FAQ
Which protocol should ClawCurrent implement first?
Start with clean product data, schema, stable checkout URLs, and account handoff. Protocol-specific integration should follow the surfaces that actually drive customers.
Can agents buy digital products safely?
Yes, if the purchase is scoped by a clear buyer mandate and the fulfillment flow preserves receipt, download, and refund information.
Sources and further reading
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