{"type": "article", "title": "What Is AI Agent Tool Calling? MCP, Function Calling, and A2A Explained (2026)", "publisher": "Web Pulse", "url": "https://wpnews.pro/news/what-is-ai-agent-tool-calling-mcp-function-calling-and-a2a-explained-2026", "original_source": "https://dev.to/arcade/ai-agent-tool-calling-mcp-a2a-23l6", "published": "2026-07-24T04:11:49+00:00", "accessed": "2026-07-24", "id": "what-is-ai-agent-tool-calling-mcp-function-calling-and-a2a-explained-2026"}