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+---
+display_name: MCP
+topic: mcp
+aliases: model-context-protocol
+related: mcp-server, ai-agent, llm, agent-harness
+short_description: Model Context Protocol (MCP) is an open standard for connecting AI models to external tools and data sources.
+created_by: Anthropic
+url: https://modelcontextprotocol.io
+released: November 2024
+---
+
+Model Context Protocol (MCP) is an open standard that defines how AI applications connect to external tools, data sources, and services. MCP uses a client-server architecture where AI-powered applications (clients) communicate with lightweight programs (servers) that expose specific capabilities through a standardized interface.
+
+MCP servers can provide tools (executable functions), resources (read-only data), and prompts (reusable templates). The protocol supports multiple transport mechanisms including stdio for local processes and HTTP with Server-Sent Events for remote connections.
+
+The protocol was created by Anthropic and released as an open specification. It is supported by AI tools including Claude Code, Cursor, Codex, Windsurf, and Claude Desktop.