type: "Specification"
title: "Model Context Protocol (MCP)"
description: "Agent-to-tool protocol: hosts, clients, servers, tools, resources, prompts over JSON-RPC."
resource: "https://modelcontextprotocol.io/specification/2025-06-18"
tags: [mcp, protocol, agentic]
generated: { by: human:crpage, at: 2026-07-09T09:44:00Z }
status: stable
sources: [{ id: primary, resource: "https://modelcontextprotocol.io/specification/2025-06-18" }]

Introduced by Anthropic in November 2024; standardises agent-to-tool interaction over JSON-RPC, exposing tools, resources and prompts with explicit consent expectations. Its security section requires user consent for data exposure, tool invocation and sampling, while acknowledging it cannot enforce those principles alone; it does not provide authoritative registry curation — that registry role is filled by a content/skills registry such as Context Hub.

Terms

Glossary terms used here: Consent.