A2ATNet | Decentralized Agent Networking (A2ATNet), Overlay Routing & Distributed Swarm Topologies

用于Decentralized Agent Networking (A2ATNet), Overlay Routing & Distributed Swarm Topologies的工业级规范。实施标准化的能力发现机制、JSON-RPC 2.0与gRPC通信握手、W3C去中心化身份(DID)加密认证以及分布式集群协同。

Agent-to-Agent (A2A) Operational Protocol Modes

• 01. A2A Handshake & Capability Discovery: Standardized bi-directional handshake establishing secure gRPC/HTTP-2 transport. Agents exchange OpenAPI 3.1 capability schemas and negotiate cryptographic session tokens. (Flow: Agent Client -> Service Discovery Probe -> Schema Exchange (JSON Schema) -> Token Issue -> Session Lock)
• 02. W3C DID Cryptographic Attestation: Decentralized identity verification enforcing Ed25519 digital signatures. Verifiable credentials prove agent authenticity and ownership without central identity providers. (Flow: DID Resolution -> Document Parsing (did:key / did:ion) -> Challenge Signature -> Proof Verified -> Authorized Mesh)
• 03. Swarm Consensus & Task Delegation: Decentralized task distribution using contract-net bidding and BFT consensus. Sub-tasks are dynamically auctioned and assigned across heterogeneous autonomous agents. (Flow: Mission Objective -> Decomposition -> Auction Broadcast -> Capability Bidding -> Atomic Escrow Assignment)
• 04. Agent2Website (A2W) Web Automation: Semantic web interaction through /llms.txt endpoints and accessibility tree navigation. Converts complex web interfaces into token-efficient machine-readable actions. (Flow: Target Domain -> /llms.txt Ingress -> AXTree Distillation -> Scoped Passkey Injection -> Verified DOM Action)

Multi-Agent System Architectural Layers

• Layer 1: Agent Communication & Transport Core: High-throughput binary messaging over WebTransport / QUIC streams and gRPC over TLS. Supports zero-copy Cap'n Proto serialization and Noise Protocol mutual authentication.
• Layer 2: Semantic Schema & Prompt Metamodels: Strict JSON Schema metamodels, TypeChat interfaces, and vendor-neutral prompt interchange formats guaranteeing zero-hallucination structured tool invocation across multi-model swarms.
• Layer 3: Decentralized Registry & Vector Discovery: High-dimensional vector embedding indexing paired with Kademlia DHT peer tracking. Enables autonomous discovery of specialized partner agents based on semantic task requirements.
• Layer 4: AgentOps, Governance & Safety Circuit Breakers: OpenTelemetry tracing conventions for AI agents, real-time token expenditure tracking, and automated circuit breakers preventing recursive delegation loops and catastrophic goal drift.

A2A Operational Benchmarks & Latency Telemetry: < 4.8 ms (A2A Handshake Latency) | 100% (Type-Safe Schema Fidelity) | 78% (Binary Token Bandwidth Saved) | Ed25519 (W3C DID Cryptographic Proof)

Core Specifications

• Kademlia Distributed Hash Tables for Decentralized Agent Peer Discovery — Architecting peer-to-peer agent registries where capability descriptors are indexed and discovered without central brokers or single points of failure. 本技术规范概述了在A2ATNet中实现的核心架构原则、报文格式、加密保证以及运行边界。
• Libp2p GossipSub for High-Density Swarm State Consensus — Scaling broadcast telemetry and collaborative decision-making across thousands of concurrent autonomous agents using gossip protocols. 本技术规范概述了在A2ATNet中实现的核心架构原则、报文格式、加密保证以及运行边界。
• NAT Traversal, STUN, and ICE for Edge-Hosted Agent Clusters — Enabling direct encrypted peer-to-peer tunnels between agents running on local corporate servers and residential edge nodes behind symmetric NATs. 本技术规范概述了在A2ATNet中实现的核心架构原则、报文格式、加密保证以及运行边界。

Technical Whitepapers & Research

• Swarm Scaling Limits and Message Latency in Libp2p GossipSub Topologies
• DHT Lookup Latency Optimization Under High Ephemeral Agent Churn Rates