A2A Transaction Norms / 智能体间交易规范

Definition

A2A transaction norms / 智能体间交易规范 are the identity, authority, behavior, messaging, settlement, and recourse rules governing commercial interactions in which one or more agents negotiate or transact without a human at every step.

Current Synthesis

Agent-to-agent commerce is not only a faster version of an API call. Each machine actor needs a legible principal, credential, permission scope, and rule for when renewed human authorization is required. The interaction also needs shared expectations about acceptable behavior, evidence, fulfillment, error handling, and dispute escalation.

Existing consumer cards and wallet accounts may not map cleanly to machine actors. The source therefore raises permissioned machine credentials, organizational authority, working capital, and high-frequency settlement as possible additional layers, while keeping the implementation route open.

Key Claims

• Every transacting agent should be attributable to a person or organization and a bounded authority.
• Norms must specify when agents may proceed autonomously and when human authorization is mandatory.
• Capability assessment matters because a valid identity does not prove an agent can fulfill a task safely.
• Shared evidence and recourse rules are needed when agents disagree or execution crosses several intermediaries.
• Machine-speed settlement may require different credentials and operational infrastructure from consumer checkout.

Evidence

• Behavior-norm evidence: 外滩大会线下圆桌｜敢把钱包交给AI吗？聊聊Agent交易爆发前夜的信任基建 records Pete Lau’s argument that an agent internet needs social-like constraints and explicit authorization rules.
• Identity evidence: 外滩大会线下圆桌｜敢把钱包交给AI吗？聊聊Agent交易爆发前夜的信任基建 records KYA and agent capability assessment as additions to user and business identity checks.
• Credential evidence: 外滩大会线下圆桌｜敢把钱包交给AI吗？聊聊Agent交易爆发前夜的信任基建 records Yong Lambert’s view that agents may need permissioned credentials, enterprise authority, working capital, and rapid settlement.

Counterevidence & Qualifications

• The panel disagrees implicitly on emphasis: protocol mechanics may be relatively straightforward, while harness enforcement, ecosystem adoption, and consumer trust are harder.
• Blockchain is presented as a possible substrate, not established as necessary or sufficient.
• The source does not define interoperability, legal liability, jurisdiction, revocation, or standard governance in detail.

What Changed

• Added an A2A governance concept spanning identity, authority, behavior, capability, settlement, and recourse.

Related Concepts

• Agent Identity And Authentication - attribution of each machine actor and its principal.
• Agent Permission Boundaries - limits on what each agent may negotiate or execute.
• Agent Payment Infrastructure / 智能体支付基础设施 - credential, settlement, and dispute layer.
• Verifiable Intent / 可验证意图 - durable mandate passed through the agent chain.
• B2B to A2A - broader commercial shift from human-operated B2B workflows toward agent-mediated exchange.