A2WProtocol | Agent-to-Website (A2W) Protocols, Headless Web Interaction & Semantic Web APIs
Especificações industriais para Agent-to-Website (A2W) Protocols, Headless Web Interaction & Semantic Web APIs. Implementando descoberta padronizada de capacidades, handshakes gRPC / JSON-RPC 2.0, atestação criptográfica W3C DID e coordenação descentralizada de enxames.
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
- The llms.txt Standard: Architecting Curated Endpoints for Web Agents — Implementing standardized /llms.txt markdown feeds that deliver structured site knowledge with 90% fewer tokens than raw HTML scraping. Esta especificação técnica descreve os princípios arquiteturais fundamentais, formatos de mensagem, garantias criptográficas e envelopes operacionais implementados em A2WProtocol.
- Autonomous Authentication and Delegated Passkey Sessions for AI Agents — Granting scoped, time-bounded cryptographic passkeys to autonomous agents acting on behalf of human users on web applications. Esta especificação técnica descreve os princípios arquiteturais fundamentais, formatos de mensagem, garantias criptográficas e envelopes operacionais implementados em A2WProtocol.
- Semantic Accessibility Tree Distillation vs Raw HTML Scraping for Web Agents — Converting complex DOM hierarchies into clean accessibility trees, accelerating agent reasoning while preventing token window exhaustion. Esta especificação técnica descreve os princípios arquiteturais fundamentais, formatos de mensagem, garantias criptográficas e envelopes operacionais implementados em A2WProtocol.
Technical Whitepapers & Research