每一次真正的委托，都会同时产生三件东西：意图、成本和后果。过去这些东西由人、组织和平台兜底；agent 进入工作流后，委托可以自动发起，任务可以跨系统流转，支付可以即时发生。问题不再只是 agent 会不会说话，而是它们开始形成真实的工作关系。
Every real delegation produces three things at once: intent, cost, and consequence. Humans, organizations, and platforms used to absorb all three. Once agents enter the workflow, delegations launch on their own, tasks cross systems, payments fire instantly. The question is no longer whether agents can talk. It's that they're starting to form real working relationships.
一旦事情出错，追问不会停留在日志层：谁授权了这件事，哪一版算交付，谁验收了结果，凭什么付款，争议由谁处理？这些问题不是 observability 问题，而是责任关系问题。
When things go wrong, the questions don't stop at the log layer. Who authorized this? Which revision counts as delivered? Who signed off? On what basis was payment made? Who handles the dispute? These aren't observability questions. They're accountability questions.
更根本的转折在于：在 agentic 系统里，一条消息常常就是一次 code execution——伴随资源消耗、支付、委托或策略变更。当 agent 持有长期凭证、能下载第三方代码、能替人花钱，通信和执行的边界已经模糊。协议层因此从"集成便利"被推到了 safety boundary 的位置：身份、授权、证据、责任，必须在协议里说清楚，而不是在应用里事后补。
There's a deeper shift underneath. In agentic systems, a message often is a code execution — paired with resource use, payment, delegation, or policy change. When agents hold long-lived credentials, download third-party code, and spend money on someone's behalf, the line between communication and execution dissolves. The protocol layer is no longer an integration convenience. It's a safety boundary. Identity, authority, evidence, and accountability have to be made explicit in the protocol — not patched in by the application after the fact.
今天这些答案散落在 Slack 截图、Jira 工单、SQL log 和平台后台里。它们能辅助排查，却不能构成工作关系本身的凭证。MCP 让 agent 能调工具，A2A 让 agent 能互相说话，AG-UI 让 agent 能对人解释过程。但没有任何一层协议规定：一个委托如何产生、双方如何签字、交付如何证明、争议如何裁决、款项如何结算、信誉如何沉淀。
Today those answers live in Slack screenshots, Jira tickets, SQL logs, and vendor dashboards. They help with triage. They don't constitute the working relationship itself. MCP gave agents a way to call tools. A2A gave them a way to talk to each other. AG-UI gave them a way to explain themselves to humans. No layer of the stack defines how a delegation forms, how both sides sign, how delivery is proven, how disputes resolve, how payment settles, or how reputation accrues.
Agent 协作的瓶颈不是通信，是责任。
The bottleneck in agent collaboration isn't communication. It's accountability.
过去这个问题不紧迫，因为 agent 大多只是工具调用者。但现在，agent 开始互相委托、花钱、提交交付、等待审批。一旦工作有成本、有版本、有验收，就需要一套独立于 runtime 和平台的责任对象。
This wasn't urgent while agents were mostly tool callers. Now they delegate to other agents, spend money, ship deliverables, and wait for approvals. Once work has cost, has versions, has sign-off, you need accountability objects that live outside any single runtime or platform.
FP 不是另一个 agent 通信协议，也不是新的 observability 平台。它把委托、双方签字、交付证据、仲裁背书、验收、支付、争议与信誉，协议化为一组可验证的协议对象。换句话说，FP 要标准化的不是消息，而是有后果的协作。
FP is not another agent-communication protocol, and it's not a new observability platform. It turns delegation, dual signatures, delivery evidence, arbiter attestation, acceptance, settlement, dispute, and reputation into a set of verifiable protocol objects. What FP standardizes isn't messages. It's collaboration with consequences.