做多智能体系统或合规 AI 架构的团队，终于有了一个能在不暴露数据的前提下实现跨组织语义路由的方案——SS-ZKR 直接解决了 A2A/MCP 协议栈中的隐私空白，值得关注。
SS-ZKR 是一种新型隐私保护路由协议，专为多智能体系统设计，作为 A2A 和 MCP 协议的补充层。它解决了在 GDPR、HIPAA 等合规敏感环境中，路由中介无法解密智能体负载却仍需进行内容感知路由的难题。协议包含三个机制：基于差分隐私语义意图向量的盲路由、自适应负载清理以及将信任区域拓扑编译为零知识访问电路。SS-ZKR 让金融、医疗和国防领域的企业能在不暴露专有数据的前提下，跨监管边界编排异构 AI 智能体。
SS-ZKR: Spatial-Semantic Zero-Knowledge Routing for Privacy-Preserving Multi-Agent Collaboration
Foundational agent interoperability standards, notably the Agent-to-Agent (A2A) protocol and the Model Context Protocol (MCP), have advanced multi-agent system communication, and complementary identity frameworks leveraging W3C Decentralised Identifiers (DIDs) and Verifiable Credentials (VCs) provide cryptographic agent authentication. However, no existing protocol supports content-based semantic routing of agent payloads across organisational trust boundaries without requiring the routing intermediary to decrypt the payload, which is a hard constraint in compliance-sensitive environments governed by GDPR, HIPAA, and MiFID II. We propose SS-ZKR, a three-mechanism privacy-preserving routing protocol designed as a complementary layer atop A2A/MCP. Mechanism I introduces blind routing via differentially private semantic intent vectors cryptographically bound to zero-knowledge proofs of payload-schema consistency. Mechanism II offers vector-weighted adaptive payload sanitisation with formal (epsilon, delta)-differential privacy for numerical fields and heuristic semantic aggregation for textual fields. Mechanism III presents a spatial-to-cryptographic policy compiler that translates visually defined trust-zone topologies into deterministic zero-knowledge access circuits. We provide a formal threat model, analyse information leakage bounds of intent vectors, present pseudocode for all three mechanisms, and give analytical complexity comparisons against TEE-based and homomorphic encryption-based routing baselines. SS-ZKR lets enterprises in financial services, healthcare, and defence orchestrate heterogeneous AI agents across regulatory boundaries without exposing proprietary data to routing infrastructure.