How Anthropic's Internal Fix Became the AI Industry's Universal Standard

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The Model Context Protocol (MCP) began in mid-2024 when Anthropic engineers David Soria Parra, Justin Spahr-Summers, and Mahesh Murag built an open standard to let AI assistants connect seamlessly with external tools, data sources, and development environments. The protocol addressed the so-called N×M problem, which required a unique custom connector for every possible AI-tool combination. Major spec updates in March and November 2025 introduced OAuth 2.1 authentication, real-time data transport, asynchronous operations, and a community-driven server registry. Adoption expanded rapidly across the industry, with OpenAI, Google DeepMind, and Microsoft all embracing MCP, and Anthropic eventually donating the project to the Linux Foundation's newly formed Agentic AI Foundation to make it vendor-neutral. By mid-2026, MCP had become ubiquitous across leading AI platforms, with its two largest SDKs recording over 470 million downloads in a single 30-day period.

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