The verdict
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Anthropic’s Model Context Protocol (MCP) has crossed 97 million installs as of March 2026, cementing its position as the default mechanism for AI agents to connect to external tools, APIs, and data sources. Every major AI provider now ships MCP-compatible tooling.
From Niche Protocol to Universal Standard
What started as Anthropic’s solution for connecting Claude to external data sources has become the TCP/IP of the AI agent era. MCP provides a standardized way for AI models to discover, authenticate with, and interact with external services — from databases and file systems to SaaS applications and custom APIs.
The protocol’s adoption curve has been remarkable. After reaching 10 million installs in late 2025, growth accelerated dramatically as Microsoft, Google, and OpenAI all announced native MCP support in their respective platforms.
What This Means for Developers
For tool developers and SaaS companies, MCP support is quickly becoming table stakes. Companies that build MCP servers for their products are seeing significantly higher AI-driven usage, as agents can seamlessly integrate with their services without custom API wrappers.
The MCP ecosystem now includes over 12,000 community-built connectors spanning categories from CRM and project management to specialized industry tools. Anthropic maintains the specification as an open standard, with governance shared through a multi-stakeholder committee.