Всё, о чём умалчивает официальная спецификация Agent Card.

Практические руководства по A2A, сверенные с выпуском 1.0.1, и сравнение с редакцией MCP 2026-07-28.

Статьи публикуются на английском языке; переводы отображаются при наличии.

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ArchitectureEN

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.

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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.

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Сравнение

A2A и MCP: изменения 2026 года

Сравнение A2A 1.0.1 и MCP 2026-07-28: обнаружение, запросы без состояния, расширение задач и публикация Agent Card.

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How-toEN

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.

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IntegrationEN

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.

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TroubleshootingEN

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.

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ProtocolEN

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.

9 min read