How the GitHub Copilot agentic harness achieves task completion on par with model-vendor harnesses while using fewer tokens, and supports over 20 models.

German court rules Google liable for errors in its AI overviews. Bruce Schneier argues AI agents are agents of the deploying organization, and allowing businesses to hide behind faulty AI creates perverse incentives.

In this technical collaboration between AWS and the authors, we present a pragmatic solution: agentic overlays. Agentic overlays are thin wrapper layers that transform traditional REST-based services into agents capable of participating in A2A interactions. They also expose REST APIs as tools compatible with the Model Context Protocol (MCP). Together, they let enterprises add A2A capabilities to existing REST services without rewriting business logic, without duplicating code, and without running parallel infrastructures. This reduces agent sprawl in the infrastructure by reusing existing services as agents. We provide reference architectures and sample code that show how to build agentic overlays.