Tudo o que a especificação do Agent Card não diz explicitamente.
Guias práticos sobre descoberta A2A conforme a especificação v1.0. Cada guia conecta-se diretamente a ferramentas de teste.
Os artigos são publicados em inglês; traduções são exibidas quando disponíveis.
Guia em destaque
Todos os guias e explicações técnicas
Unified agent architectures: A2A and MCP under the AAIF
Discover how MCP and A2A now sit under the Linux Foundation's AAIF as a dual-layer architecture, pairing tool access with cross-framework agent discovery.
A2A x402 extension: pay-per-call monetisation for AI agents
Learn how the A2A x402 extension lets agents declare payment support in Agent Cards and charge for skills with on-chain stablecoin payments.
A2A vs MCP: what changed in 2026
Compare A2A 1.0.1 and MCP 2026-07-28: discovery, stateless requests, task extensions, version negotiation, and Agent Card publishing.
How to create an agent-card.json file for A2A v1.0
Create an agent-card.json (agent.json) file for A2A v1.0: required Agent Card fields, well-known discovery URLs, response headers, and common mistakes.
Publishing an Agent Card from ADK, LangGraph, or CrewAI
Learn how to publish an A2A Agent Card from Google ADK, LangGraph, CrewAI, or Semantic Kernel by mapping framework concepts to standard discovery fields.
Agent Card validation errors explained, one by one
Diagnose every A2A v1.0 Agent Card validation error and warning, understand what triggers it, and apply the exact fix in validator check order.
What A2A v1.0 changed in the Agent Card
Learn how A2A v1.0 changes Agent Cards, from supportedInterfaces and securityRequirements to removed fields, with practical v0.3 migration examples.