The official introduction: what MCP connects, the USB-C comparison, and how clients and servers fit together.
What is the Model Context Protocol (MCP)?
Model Context Protocol 2026
Open modelcontextprotocol.io →MCP (Model Context Protocol) is an open-source standard for connecting AI applications to outside tools and data, which its own documentation compares to a USB-C port for AI. An MCP server is a small program that exposes one system, such as GitHub, Notion, Gmail or your database, as tools and data; the AI app that uses it (Claude, ChatGPT, Cursor, VS Code) is the client. Anthropic released it in November 2024 and the current specification is dated 28 July 2026. For you it means one connector works in every assistant that speaks MCP: Claude lets even Free users add one custom connector from a URL. Each server widens what the AI can read and do, so connect only servers you trust.
Part of AI agents on eChai Explore.
On the AI map, 29 October 2026 Decision models Coding agents Agents that do tasks for you AI browsers No-code automation with AI steps
8 resources.
The official introduction: what MCP connects, the USB-C comparison, and how clients and servers fit together.
Model Context Protocol 2026
Open modelcontextprotocol.io →The specification itself, the source to read when you need exact behaviour.
Model Context Protocol Jul 2026
Open modelcontextprotocol.io →What changed in the current version (a stateless core, cacheable lists, tighter authorisation) and how widely the SDKs are used.
MCP lead maintainers Jul 2026
Open blog.modelcontextprotocol.io →Anthropic's launch post explaining the problem MCP was made to solve.
Anthropic Nov 2024
Open anthropic.com →How to add an MCP server to Claude, which plans allow it (Free users get one), and the security points to check first.
Anthropic 2026
Open support.claude.com →How OpenAI's models call remote MCP servers, showing the standard works across companies.
OpenAI 2026
Open developers.openai.com →The official directory of public MCP servers, the place to look before you build one.
Model Context Protocol 2026
Open registry.modelcontextprotocol.io →A short non-technical video on what MCP is and why it spread.
Builders Central Mar 2025
Watch on YouTube youtube.com →The same ground, over in Build the product, our Starting Up track.