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何故吾心难释,思及Google新之A2A协议乎
V K Adhithiy · 2026-05-24 · via DEV Community

当 Sundar Pichai 于 Google I/O 2026 言及"代理式 Gemini 时代",众皆瞩目于流光溢彩之消费更新。吾辈凝视 Gemini Spark 预订晚餐,浑然不觉侧畔立一开发者更新之绝对英杰。

噫嘻,使背景之智囊司掌 OpenTable 之预定,固炫也,然若为司程者,真之要义非消费之器,乃通意之准绳也。

吾所言之,乃 Agent2Agent (A2A) 之通则也。今试析 A2A 为今岁 I/O 之实要,及其于尔多司程之码本,当慎之,勿使沦为不可理喻之噩梦也。

难题:吾辈重筑壁垒,然智巧更甚
欲明A2A之重,必察今时AI之状。数载以来,见能动框架骤兴——LangGraph、crewAI、IBM之BeeAI,及Google自出之Agent Development Kit(ADK)是也.

然其弊何在?互不交通耳。

今欲使专精LangChain之代理,委诸私有Google ADK代理之次务,常逢格式不兼容之阻。欲行多代理之作业乎?善哉,则囿于单一之生态。吾辈实构极智之微服务,然不知何故,竟忘创HTTP以联之。

入A2A:通译无界
昔年肇始,今岁此I/O盛推,A2A协议(今为Linux基金会开源项目)实乃智能网通用通译之器。

A2A 乃一公开之标准,使此孤立之智能体得以相寻、相议、相协——无论其依何模式或框架所成。此实乃 JSON-RPC 2.0 之协议,然专为自主 AI 之纷乱而设。

其运作之道
A2A 不使智能体暴露其内藏之记忆或专有之逻辑,惟使诸智能体循一标准之规约而互动:

智能体名片:视此为智能体之领英档案。乃一URL可及之JSON文件,智能体列其所能(如“通晓Python”、“好读巨量SQL数据库”)。

主仆模式:A2A主方(委派之智能体)发请托。A2A仆方(远端劳作之智能体)设相合之端点以承其事。

任务& 器物:自主之作,需时日也。不可但待而祷。一"任"以察事之状,免系统悬而未决;一"器"乃事成后,实之成果,流回于客也。

此何以易局?
A2A 之变,根本易软件之构于自主之世。

  1. 真之互通
    不复需筑块状AI之应用。可藉Anthropic之MCP,建专门之库存代理,以阅尔之数据库。若库存不足,是代理可凭A2A,安全地鸣一全然异构之供商代理,此代理乃由第三方商贾所建。彼等议定订单,而双方皆不示其内里之码库。

  2. 故障隔离
    将作业流程析为离散、符合A2A规范的代理,则系统坚若磐石。若一专司之代理始作幻梦或失职,全流程不至倾覆。汝但易其乖张之代理为良者,更其代理卡中URL即可.

  3. 存其幽玄
    企业采用多智能体系统,素来惧怕数据外泄。A2A使智能体得以协作,而仍守严谨界限。吾之智能体可请尔之智能体解难题,尔之智能体但返其解。盖曰:“善哉,守尔之密”,吾之智能体实不知尔之智能体幕后所用之47般支离破碎之专有工具以成其事。

所得之要义
Google I/O 2026之要义何在?人工智能之未来,非一统御万天之巨神模型。乃广袤相连之专才多智能体网络,于幕后协力成事耳。

今若营构人工智能之应用,当止欲使独代理物通晓万事。当专意令其为 A2A 之服务器。能习得如何联缀此等自主系统者,方为构建来世十年万维之架构师。