Conduit logoConduit

Reference

Agentic commerce glossary

Plain-English definitions of the protocols and concepts behind agentic trade — the language agents and merchants need to speak.

ACP vs UCPAgent spend limitsPlatform
Agentic commerce
Software agents discovering, negotiating, and purchasing goods and services autonomously on a person or company’s behalf — instead of a human clicking through a website. It runs on open protocols such as UCP, ACP, MCP, AP2, and x402.
Agentic procurement
Agentic commerce applied to B2B sourcing: autonomous agents find suppliers, compare and negotiate quotes, and place orders within set policies across a supply chain.
Agentic Execution ScoreAES
Conduit’s measure of whether an agent can actually finish a checkout end-to-end on a rail it holds — or whether it hits a human wall. Outcome-calibrated over real orders, not a static guess.
Universal Commerce ProtocolUCP
An open standard co-developed by Shopify and Google (2026) for AI agents to discover products, negotiate capabilities, and complete checkout with any participating merchant. Compare with ACP in the ACP vs UCP guide.
Agentic Commerce ProtocolACP
An open standard from OpenAI and Stripe that powers instant checkout inside AI assistants such as ChatGPT. See ACP vs UCP and ChatGPT Instant Checkout.
Model Context ProtocolMCP
Anthropic’s open standard for connecting AI agents to tools and live data. Conduit exposes commerce as MCP tools so any compatible agent can transact without custom integration.
Agent Payments ProtocolAP2
A standard for human-approved spend mandates — limits, categories, and expiry — that an agent transacts within, so autonomous payments stay inside boundaries you control and can revoke instantly. Deep dive: agent spend limits.
HTTP 402 paymentsx402
A standard for trackable, web-native crypto payments an agent can make directly over HTTP. Conduit treats x402 as a first-class payable rail alongside COD and card handlers.
Agent-to-agent negotiationA2CN
Buyer agents negotiating bulk pricing and terms directly with merchant agents (also seen as A2A). Conduit can fan out to suppliers and compare negotiated quotes.
Demand aggregationGPO
Pooling demand across buyers — a group purchasing organization — to unlock volume pricing a solo buyer could not get. Better prices over time, never paid ranking.
Autonomous checkout
Completing a purchase end-to-end in software, with no human entering a card, solving a captcha, or clicking through a storefront.
Intent handoff
When an agent cannot complete a checkout autonomously, Conduit hands off a ready cart via a real continue_url so a human can finish in one step.
Two-sided reputation
Outcome-driven trust earned per order: suppliers earn rank by delivering; agents earn trust by paying and completing. Nothing is for sale.
Walled garden
A closed commerce platform with an approved-merchant allowlist, curated catalog, restricted rails, pay-for-rank, and per-transaction fees, controlled by one gatekeeper — the opposite of neutral ground.
Agentic economy (Web4)
The emerging phase of the internet where AI agents act, transact, and coordinate on people’s behalf rather than humans browsing pages.
Normalized catalog
A single, deduplicated product and carrier graph built from many sources (UCP, ACP, native APIs, the long tail) so agents compare offers on the merits, not on formatting.
Connect your agent← Back to ConduitHow agentic checkout works