Guide

MCP specification (2026-07-28)

Model Context Protocol · modelcontextprotocol.io

The specification itself, the source to read when you need exact behaviour.

Open on modelcontextprotocol.io ↗

The question it answers

  1. What is MCP, and why does it matter for my agents?

Read with it

  1. Anthropic's launch post explaining the problem MCP was made to solve. anthropic.com Article Introducing the Model Context Protocol Anthropic
  2. The official introduction: what MCP connects, the USB-C comparison, and how clients and servers fit together. modelcontextprotocol.io Guide What is the Model Context Protocol (MCP)? Model Context Protocol
  3. Video Model Context Protocol (MCP), Clearly Explained (Why it Matters) Builders Central
  4. What changed in the current version (a stateless core, cacheable lists, tighter authorisation) and how widely the SDKs are used. blog.modelcontextprotocol.io Article The 2026-07-28 Specification MCP lead maintainers
  5. How to add an MCP server to Claude, which plans allow it (Free users get one), and the security points to check first. support.claude.com Guide Get started with custom connectors using remote MCP Anthropic
  6. How OpenAI's models call remote MCP servers, showing the standard works across companies. developers.openai.com Guide MCP and connectors (OpenAI API) OpenAI
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