A2ATRegistry | Decentralized Agent Registries, Capability Indexing & Semantic Service Discovery
Decentralized Agent Registries, Capability Indexing & Semantic Service Discovery를 위한 산업 등급 사양. 표준화된 역량 발견, JSON-RPC 2.0 / gRPC 핸드셰이크, 암호화 W3C DID 증명 및 분산 군집 조정 구현.
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
- Vector-Based Semantic Capability Indexing for Dynamic Agent Discovery — Indexing natural language capability profiles in high-dimensional vector spaces, enabling agents to discover peers based on task semantics. 이 기술 사양은 A2ATRegistry 전반에 걸쳐 구현된 핵심 아키텍처 원칙, 메시지 형식, 암호화 보증 및 운영 엔벨로프를 설명합니다.
- W3C DID Documents as Standardized Agent Service Descriptors — Publishing cryptographic public keys, supported transport protocols, and API endpoint schemas in verifiable decentralized identifier documents. 이 기술 사양은 A2ATRegistry 전반에 걸쳐 구현된 핵심 아키텍처 원칙, 메시지 형식, 암호화 보증 및 운영 엔벨로프를 설명합니다.
- Cryptographic Reputation and SLA Verification in Open Agent Networks — Measuring historical task completion fidelity, response latency, and economic bond forfeiture to compute trust scores for autonomous peers. 이 기술 사양은 A2ATRegistry 전반에 걸쳐 구현된 핵심 아키텍처 원칙, 메시지 형식, 암호화 보증 및 운영 엔벨로프를 설명합니다.
Technical Whitepapers & Research