{"type": "article", "title": "Your MCP Tool Definition Can Be 100% Spec-Compliant and Still Not Work", "publisher": "Web Pulse", "url": "https://wpnews.pro/news/your-mcp-tool-definition-can-be-100-spec-compliant-and-still-not-work", "original_source": "https://dev.to/ethan_5b3022150e2c07a4030/your-mcp-tool-definition-can-be-100-spec-compliant-and-still-not-work-f8j", "published": "2026-08-01T07:15:58+00:00", "accessed": "2026-08-01", "id": "your-mcp-tool-definition-can-be-100-spec-compliant-and-still-not-work"}