MCP

The Model Context Protocol, an open standard developed by Anthropic and released in November 2024 that defines a universal interface for connecting AI language models to external data sources, tools, and services. Before MCP, every integration between an AI assistant and an external system (a database, an API, a file system, a calendar) required custom implementation on both sides. MCP provides a standardized client-server protocol where AI applications act as MCP clients that request capabilities, and external services act as MCP servers that expose tools, resources, and prompts through a consistent interface. This allows any MCP-compatible AI system to use any MCP-compatible tool without custom integration work, analogous to how USB-C created a universal physical standard for device connectivity. MCP was adopted rapidly across the AI developer ecosystem, with hundreds of MCP servers built for services including GitHub, Slack, Google Drive, databases, and web browsers within months of its release. Example: Claude's desktop and API products implemented MCP client support, allowing users and developers to connect Claude to any MCP server and immediately access the tools and data those servers expose. A single MCP server for GitHub, once installed, allows any MCP-compatible AI assistant to read repositories, create issues, submit pull requests, and search code, with no additional integration work required per assistant. Why it matters for AI: MCP addresses the integration fragmentation problem that made deploying AI agents in complex enterprise environments extremely difficult. By standardizing how AI models connect to external capabilities, it accelerates the development of AI agent systems that can take actions in the real world, and it shifts competitive differentiation from proprietary integrations toward model quality and application design. MCP's rapid adoption across competing AI platforms suggests it may become a lasting infrastructure standard for agentic AI.

Explore the full Web3 Glossary — 2,000+ expert-curated definitions. Need guidance? Talk to our consultants.