A2ATProtocol | Agent-to-Agent (A2A) Protocols, Machine-Readable Capability Discovery & Autonomous Negotiation
Specifiche industriali per Agent-to-Agent (A2A) Protocols, Machine-Readable Capability Discovery & Autonomous Negotiation. Implementazione di discovery standardizzata delle capacità, handshake gRPC / JSON-RPC 2.0, attestazione crittografica W3C DID e coordinamento decentralizzato degli sciami.
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
- Agent-to-Agent Protocol Specification and Bi-Directional Handshakes — Standardizing bi-directional A2A communication handshakes, session token issuance, and latency bounds over gRPC and HTTP/2 for autonomous multi-agent systems. Questa specifica tecnica descrive i principi architetturali fondamentali, i formati dei messaggi, le garanzie crittografiche e gli inviluppi operativi implementati su A2ATProtocol.
- Semantic Capability Discovery and Schema Negotiation — Formulating protocols allowing autonomous software agents to dynamically negotiate schemas, tool APIs, and payload serializations without human intervention. Questa specifica tecnica descrive i principi architetturali fondamentali, i formati dei messaggi, le garanzie crittografiche e gli inviluppi operativi implementati su A2ATProtocol.
- Cryptographic Agent Identity and W3C DID Attestation — Implementing Ed25519 signatures, W3C Decentralized Identifiers (DIDs), and verifiable credentials to eliminate spoofing and establish verifiable agent provenance. Questa specifica tecnica descrive i principi architetturali fondamentali, i formati dei messaggi, le garanzie crittografiche e gli inviluppi operativi implementati su A2ATProtocol.
Technical Whitepapers & Research