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 betwe