Today’s guests, David Soria Parra and Justin Spahr-Summers, are the creators of Anthropic’s Model Context Protocol (MCP). When we first wrote Why MCP Won, we had no idea how quickly it was about to win. In the past 4 weeks, OpenAI and now Google have now announced the MCP support, effectively confirming our prediction that MCP was the presumptive winner of the agent standard wars. MCP has now overtaken OpenAPI, the incumbent option and most direct alternative, in GitHub stars (3 months ahead of conservative trendline): For protocol and history nerds, we also asked David and Justin to tell the origin story of MCP, which we leave to the reader to enjoy (you can also skim the transcripts, or, the changelogs of a certain favored IDE). It’s incredible the impact that individual engineers solving their own problems can have on an entire industry. Timestamps 00:00 Introduction and Guest Welcome 00:37 What is MCP? 02:00 The Origin Story of MCP 05:18 Development Challenges and Solutions 08:06 Technical Details and Inspirations 29:45 MCP vs Open API 32:48 Building MCP Servers 40:39 Exploring Model Independence in LLMs 41:36 Building Richer Systems with MCP 43:13 Understanding Agents in MCP 45:45 Nesting and Tool Confusion in MCP 49:11 Client Control and Tool Invocation 52:08 Authorization and Trust in MCP Servers 01:01:34 Future Roadmap and Stateless Servers 01:10:07 Open Source Governance and Community Involvement 01:18:12 Wishlist and Closing Remarks