Microsoft GitHub Introduces Shadow-Frog for Coding Agents

Microsoft GitHub has introduced Shadow-Frog, an agentic discovery system that allows coding agents to build a codebase memory through active exploration. Instead of passively recording past tasks, Shadow-Frog enables agents to run experiments on underexplored parts of a codebase and capture learnings in a shadow knowledge base. This allows agents to acquire tacit knowledge that human coders gain through hands-on experience.