Security Declaration for AI Agents: Deep Dive into A2AS (Agent-to-Agent Security) Certification Mechanism

Reference links: A2AS.org Official Website linebot-adk Project Certification Page This article documents an interesting Pull Request I received while maintaining linebot-adk (LINE Bot Agent Development Kit): adding the A2AS security certificate to the project. This is not just a YAML file, but a significant milestone for AI Agents to move towards "industrial-grade security" in 2026. Background When we develop Agents like linebot-adk that have Tool Use (Function Calling) capabilities, the biggest concern for users is often: "Will this Agent issue commands without my permission?" or "What data can it access?". Traditionally, we could only write explanations in README.md, but that's for humans to read, not for system verification. This is why A2AS (Agent-to-Agent Security) emerged – it's hailed as the "HTTPS of the AI world". 🛠️ Step 1: Understanding the BASIC Model of A2AS A2AS is not just a name; it has a complete BASIC security model behind it, designed to solve the trust issue betwee