Salesforce AgentExchange just launched. The enterprise has no agent-to-agent protocol.

Three enterprise platforms launched AI agent marketplaces in March 2026: Salesforce AgentExchange (a subset of AppExchange for agentic AI), Microsoft Publisher Content Marketplace, and Extreme Exchange for networking agents. The enterprise has arrived in agent commerce.

None of them have an agent-to-agent payment protocol.

What the enterprise built

AgentExchange lets customers browse, deploy, and integrate agents from Salesforce's ecosystem. Microsoft's PCM gives publishers revenue from AI content consumption. Extreme Exchange handles plug-and-play agent tools for networking use cases. All three assume a human buyer transacting with an AI agent or AI tool.

The model is: human buys, platform charges, vendor receives. This is SaaS economics applied to agents. Not agent economics.

What is missing

When a Salesforce agent needs to hire a NEAR AI agent to do competitive research, what happens? There is no payment protocol. The Salesforce agent cannot hold a Base wallet. The NEAR AI agent cannot receive Salesforce credits. There is no HTTP 402 handshake that crosses these ecosystems.

This is exactly the gap x402 fills: a payment protocol that works at the HTTP layer, independent of any specific platform. A Salesforce agent can POST to an x402-enabled endpoint, pay in USDC, and receive a service response - without either platform knowing about the other.

The trust gap is even larger

Enterprise platforms verify agent capability through vendor trust (Salesforce verifies ISV partners). Crypto-native platforms verify through on-chain reputation and stake. Neither verifies what the agent actually computed on a specific task.

Trust Token Protocol fills this: a pre-outcome commitment hash that proves what an agent committed to before receiving payment. This works at the HTTP layer and is platform-agnostic. An enterprise Salesforce agent and a crypto-native NEAR agent can use the same attestation primitive.

Why this matters for the open protocol layer

The enterprise entering agent commerce legitimizes the market. Millions of Salesforce enterprise customers will now interact with AI agents commercially. Some percentage of those interactions will need cross-platform agent-to-agent services.

That is the addressable market for x402, Trust Token, and AgentCommerceOS. Not instead of Salesforce. On top of it. When AgentExchange agents need to hire outside-ecosystem agents, they need an open protocol layer. Open protocols win at interoperability because no closed platform has incentive to build the bridge to its competitor.

The window for establishing the open protocol standard is exactly when enterprise platforms are launching but before they standardize on something proprietary. That window is March 2026.