Everything your team needs to know about MCP in 2026
Blog post from WorkOS
The Model Context Protocol (MCP) is an open standard developed by Anthropic to facilitate seamless connectivity between AI models and external tools, data sources, and services, transforming how AI applications integrate with real-world systems. Since its introduction in November 2024, MCP has been widely adopted by major tech companies like OpenAI, Google DeepMind, and Microsoft, significantly reducing the complexity of creating custom integrations for AI applications by establishing a universal protocol. MCP was donated to the Agentic AI Foundation under the Linux Foundation in December 2025, making it a community-governed standard. The protocol works by allowing AI applications to connect to tools through a single MCP server, thereby simplifying integration from an N×M problem to an N+M solution. It supports both local and remote server connections, uses JSON-RPC 2.0 for communication, and introduces async tasks for long-running operations. The protocol's architecture includes interactive user interfaces with MCP Apps, enhancing user interaction through rich HTML interfaces. MCP's governance is under the Agentic AI Foundation, with development organized around working groups focusing on transport evolution, agent communication, enterprise readiness, and governance maturation. Despite its rapid adoption and ecosystem growth, MCP faces challenges in enterprise observability, multi-tenancy, rate limiting, and configuration portability, with ongoing efforts to address these through future roadmap developments.