Microsoft Senior AI Developer Shows How They Build AI Agents with Claude + 1,400 Pre-Built MCP Tools at Microsoft

X/Twitter·low signal

A Microsoft senior AI developer published a 34-minute walkthrough showing how Microsoft internally builds AI agents using Anthropic's Claude (specifically Opus 4.7) rather than its own Copilot, leveraging 1,400+ pre-built MCP tools. The video demonstrates plugging Claude into an agent framework with tool access, offering a rare look at how even Microsoft's own AI team reaches for competitor tools when building internal agentic systems.