What Is MCP?
The Model Context Protocol (MCP) is an open standard for connecting AI models to external tools, data sources, and services in a consistent way. Before a standard like this, every AI platform needed its own custom integration code to connect to, say, a calendar app or a database — MCP aims to replace that with a single, reusable connection method any compliant model or platform can use.
Why It Matters
Without a shared standard, every tool integration is a one-off engineering project, which limits how many external services an AI assistant can realistically connect to. A shared protocol means a tool built to support MCP can work across multiple AI platforms without separate integration work for each one, and an AI platform that supports MCP can plug into any MCP-compliant tool without custom code per tool.
How It Works, Conceptually
An MCP server exposes a specific tool or data source (a file system, a database, a specific app) in a standardized format; an MCP client (the AI model or platform) can discover what that server offers and call it as needed during a conversation or task. This is similar in spirit to how a web API lets different applications talk to a service without needing to know its internal implementation.
Where You'll Encounter It
MCP shows up most visibly in developer tools and agentic platforms — coding assistants that can pull live data from a connected service, or general AI assistants that can take real actions across your connected apps rather than just producing text. See our Agents directory and AI Protocols page for related concepts.
Related Pages
Frequently Asked
Do I need to understand MCP to use AI tools?
No — as an end user, MCP mostly works invisibly behind the scenes; it matters more if you're building or integrating AI tools yourself.
Is MCP specific to one AI company?
No, it's designed as an open standard intended to work across multiple AI platforms and providers, not tied to a single company.
How is MCP different from a regular API?
A regular API is typically built for one specific service; MCP standardizes how any AI model can discover and use many different tools and data sources through the same underlying protocol.
Where can I see AI agents or platforms that use MCP?
See our Agents and Platforms directories for tools that support agentic, tool-connected workflows.