# News: March 31, 2026

> 10 curated links on AI agents, Python, security, Google Cloud, and engineering, selected by Médéric Hurier.

- Author: [Médéric Hurier (Fmind)](https://www.fmind.dev/)
- Published: 2026-03-31
- URL: https://www.fmind.dev/news/2026-03-31/

- [Announcing ADK for Java 1.0.0: Building the Future of AI Agents in Java](<https://developers.googleblog.com/announcing-adk-for-java-100-building-the-future-of-ai-agents-in-java/>): Google released its Agent Development Kit (ADK) for Java, featuring grounding tools, context engineering, and native support for the Agent2Agent protocol.
- [Meta-Harness: End-to-End Optimization of Model Harnesses](<https://yoonholee.com/meta-harness/>): Meta-Harness uses coding agents to autonomously optimize model performance by analyzing full execution traces and fixing failures.
- [Google Employees Have a New AI Tool Called 'Agent Smith.' It's So Popular That Access Got Restricted.](<https://www.businessinsider.com/google-agent-smith-employees-ai-driven-coding-2026-3>): Google introduced an internal AI tool named "Agent Smith" that automates coding tasks, seeing such high demand that access had to be restricted.
- [GitHub Copilot is Injecting Ads into Pull Requests](<https://awesomeagents.ai/news/github-copilot-ads-in-pull-requests/>): GitHub Copilot was caught injecting promotional content into PR descriptions, leading to a quick reversal after developer backlash.
- [AI Self EVOLUTION (Meta Harness)](<https://www.youtube.com/watch?v=61JUHDK-em8>): Matthew Berman explains Meta-Harness, a system that allows AI models to autonomously optimize their own performance harnesses through execution trace analysis.
- [Prototype to Production with ADK](<https://www.youtube.com/watch?v=jDCkirAz4-E>): A technical walkthrough demonstrating how to take an AI agent from a prototype to a production-ready application using Google's new Agent Development Kit.
- [ADK for Java 1.0 is now available!](<https://www.youtube.com/watch?v=YqABMjSho_M>): Google for Developers highlights the official launch of the Agent Development Kit (ADK) for Java for building sophisticated AI agents.
- [Google’s New AI Tool Is Unreal](<https://www.youtube.com/watch?v=-dUE11ZyCwA>): A review of Google's latest internal AI advancements and their potential impact on the developer ecosystem.
- [Carrefour Becomes First European Retailer to Offer Shopping on ChatGPT](<https://www.retail-insight-network.com/news/carrefour-becomes-first-european-retailer-to-offer-shopping-on-chatgpt/>): Carrefour launched an AI-powered grocery shopping service on ChatGPT in France for meal planning and automated basket building.
- [He built an entire business using Google AI (ft @digitalsamaritan) | The Agent Factory Podcast](<https://www.youtube.com/watch?v=_KW-vgPtHlc>): An interview exploring how entrepreneurs are leveraging Google's AI ecosystem to build and scale new business ventures.